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    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242602_ClassMember" id="ixv-141">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242602_ClassMember" id="ixv-143">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242602_ClassMember" id="ixv-148">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
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    <oef:AddlInfoPhoneNumber contextRef="C000242602_ClassMember" id="ixv-153">1-877-208-0098</oef:AddlInfoPhoneNumber>
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    <oef:ExpensesTextBlock contextRef="C000242602_ClassMember" id="ixv-163">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
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&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
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    <oef:FactorsAffectingPerfTextBlock contextRef="C000242602_ClassMember" id="ixv-205">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242602_ClassMember" id="ixv-229">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,970


$12,559



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242602_LG_ClassMember_3YR" id="ixv-248">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242602_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205328"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242602_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205329"
      unitRef="usd">11970</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242602_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205330"
      unitRef="usd">12559</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242602_LG_1_AdditionalIndexMember_3YR"
      id="ixv-265">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242602_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205331"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242602_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205332"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242602_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205333"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242602_LG_2_AdditionalIndexMember_3YR"
      id="ixv-282">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242602_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205334"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242602_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205335"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242602_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205336"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242602_ClassMember" id="ixv-324">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.92%

12.81%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242602_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205337"
      unitRef="pure">0.0492</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242602_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205338"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242602_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205339"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242602_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205340"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242602_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205341"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242602_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205342"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242602_ClassMember" id="ixv-379">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242602_ClassMember" id="ixv-396">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242602_ClassMember" id="ixv-400">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242602_ClassMember" id="ixv-406">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242602_InstantMember"
      decimals="0"
      id="ixv-205343"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242602_InstantMember"
      decimals="INF"
      id="ixv-205344"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242602_ClassMember"
      decimals="0"
      id="ixv-205345"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242602_ClassMember"
      decimals="INF"
      id="ixv-205346"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242602_ClassMember" id="ixv-481">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242602_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205347"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205348"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205349"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205350"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242602_ClassMember" id="ixv-572">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242602_TH_0_Member"
      decimals="INF"
      id="ixv-205351"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_TH_1_Member"
      decimals="INF"
      id="ixv-205352"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_TH_2_Member"
      decimals="INF"
      id="ixv-205353"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_TH_3_Member"
      decimals="INF"
      id="ixv-205354"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_TH_4_Member"
      decimals="INF"
      id="ixv-205355"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242602_TH_5_Member"
      decimals="INF"
      id="ixv-205356"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-703">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242573_ClassMember" id="ixv-715">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242573_ClassMember" id="ixv-718">Fidelity&#xae; Sustainable Target Date 2030 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242573_ClassMember" id="ixv-722">FSXHX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242573_ClassMember" id="ixv-741">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242573_ClassMember" id="ixv-743">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242573_ClassMember" id="ixv-748">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242573_ClassMember" id="ixv-750">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242573_ClassMember" id="ixv-753">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242573_ClassMember" id="ixv-756">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242573_ClassMember" id="ixv-763">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;37&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.36&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242573_ClassMember"
      decimals="0"
      id="ixv-205357"
      unitRef="usd">37</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242573_ClassMember"
      decimals="INF"
      id="ixv-205358"
      unitRef="pure">0.0036</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242573_ClassMember" id="ixv-805">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242573_ClassMember" id="ixv-829">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,280


$11,828



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242573_LG_ClassMember_3YR" id="ixv-848">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242573_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205359"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242573_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205360"
      unitRef="usd">11280</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242573_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205361"
      unitRef="usd">11828</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242573_LG_1_AdditionalIndexMember_3YR"
      id="ixv-865">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242573_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205362"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242573_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205363"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242573_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205364"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242573_LG_2_AdditionalIndexMember_3YR"
      id="ixv-882">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242573_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205365"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242573_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205366"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242573_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205367"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242573_ClassMember" id="ixv-924">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.85%

9.29%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242573_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205368"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242573_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205369"
      unitRef="pure">0.0929</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242573_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205370"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242573_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205371"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242573_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205372"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242573_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205373"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242573_ClassMember" id="ixv-979">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242573_ClassMember" id="ixv-996">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242573_ClassMember" id="ixv-1000">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242573_ClassMember" id="ixv-1006">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242573_InstantMember"
      decimals="0"
      id="ixv-205374"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242573_InstantMember"
      decimals="INF"
      id="ixv-205375"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242573_ClassMember"
      decimals="0"
      id="ixv-205376"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242573_ClassMember"
      decimals="INF"
      id="ixv-205377"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242573_ClassMember" id="ixv-1081">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242573_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205378"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205379"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205380"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205381"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242573_ClassMember" id="ixv-1172">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242573_TH_0_Member"
      decimals="INF"
      id="ixv-205382"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_TH_1_Member"
      decimals="INF"
      id="ixv-205383"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_TH_2_Member"
      decimals="INF"
      id="ixv-205384"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_TH_3_Member"
      decimals="INF"
      id="ixv-205385"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_TH_4_Member"
      decimals="INF"
      id="ixv-205386"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_TH_5_Member"
      decimals="INF"
      id="ixv-205387"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242573_TH_6_Member"
      decimals="INF"
      id="ixv-205388"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-1313">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250740_ClassMember" id="ixv-1325">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250740_ClassMember" id="ixv-1328">Fidelity Advisor&#xae; Sustainable Target Date 2070 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250740_ClassMember" id="ixv-1332">FRDDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250740_ClassMember" id="ixv-1351">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250740_ClassMember" id="ixv-1353">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250740_ClassMember" id="ixv-1358">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250740_ClassMember" id="ixv-1360">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250740_ClassMember" id="ixv-1363">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250740_ClassMember" id="ixv-1366">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250740_ClassMember" id="ixv-1373">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250740_ClassMember"
      decimals="0"
      id="ixv-205389"
      unitRef="usd">38</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250740_ClassMember"
      decimals="INF"
      id="ixv-205390"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250740_ClassMember" id="ixv-1416">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250740_ClassMember" id="ixv-1422">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250740_ClassMember" id="ixv-1446">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$10,277



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250740_LG_ClassMember_2YR" id="ixv-1465">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250740_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205391"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250740_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205392"
      unitRef="usd">10277</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250740_LG_1_AdditionalIndexMember_2YR"
      id="ixv-1478">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250740_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205393"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250740_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205394"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250740_LG_2_AdditionalIndexMember_2YR"
      id="ixv-1492">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250740_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205395"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250740_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205396"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250740_ClassMember" id="ixv-1527">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250740_InstantMember"
      decimals="0"
      id="ixv-205397"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250740_InstantMember"
      decimals="INF"
      id="ixv-205398"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250740_ClassMember"
      decimals="0"
      id="ixv-205399"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250740_ClassMember"
      decimals="INF"
      id="ixv-205400"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250740_ClassMember" id="ixv-1602">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250740_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205401"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205402"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205403"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205404"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250740_ClassMember" id="ixv-1693">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250740_TH_0_Member"
      decimals="INF"
      id="ixv-205405"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_TH_1_Member"
      decimals="INF"
      id="ixv-205406"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_TH_2_Member"
      decimals="INF"
      id="ixv-205407"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_TH_3_Member"
      decimals="INF"
      id="ixv-205408"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_TH_4_Member"
      decimals="INF"
      id="ixv-205409"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250740_TH_5_Member"
      decimals="INF"
      id="ixv-205410"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-1824">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242548_ClassMember" id="ixv-1836">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242548_ClassMember" id="ixv-1839">Fidelity Advisor&#xae; Sustainable Target Date 2015 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242548_ClassMember" id="ixv-1843">FSVWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242548_ClassMember" id="ixv-1862">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242548_ClassMember" id="ixv-1864">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242548_ClassMember" id="ixv-1869">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242548_ClassMember" id="ixv-1871">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242548_ClassMember" id="ixv-1874">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242548_ClassMember" id="ixv-1877">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242548_ClassMember" id="ixv-1884">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;33&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242548_ClassMember"
      decimals="0"
      id="ixv-205411"
      unitRef="usd">33</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242548_ClassMember"
      decimals="INF"
      id="ixv-205412"
      unitRef="pure">0.0032</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242548_ClassMember" id="ixv-1926">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242548_ClassMember" id="ixv-1950">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$10,809


$11,361



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242548_LG_ClassMember_3YR" id="ixv-1969">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242548_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205413"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242548_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205414"
      unitRef="usd">10809</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242548_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205415"
      unitRef="usd">11361</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242548_LG_1_AdditionalIndexMember_3YR"
      id="ixv-1986">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242548_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205416"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242548_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205417"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242548_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205418"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242548_LG_2_AdditionalIndexMember_3YR"
      id="ixv-2003">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242548_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205419"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242548_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205420"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242548_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205421"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242548_ClassMember" id="ixv-2045">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

5.10%

6.98%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242548_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205422"
      unitRef="pure">0.0510</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242548_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205423"
      unitRef="pure">0.0698</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242548_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205424"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242548_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205425"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242548_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205426"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242548_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205427"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242548_ClassMember" id="ixv-2100">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242548_ClassMember" id="ixv-2117">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242548_ClassMember" id="ixv-2121">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242548_ClassMember" id="ixv-2127">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242548_InstantMember"
      decimals="0"
      id="ixv-205428"
      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242548_InstantMember"
      decimals="INF"
      id="ixv-205429"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242548_ClassMember"
      decimals="0"
      id="ixv-205430"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242548_ClassMember"
      decimals="INF"
      id="ixv-205431"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242548_ClassMember" id="ixv-2202">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242548_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205432"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205433"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205434"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-205435"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205436"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242548_ClassMember" id="ixv-2306">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242548_TH_0_Member"
      decimals="INF"
      id="ixv-205437"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_1_Member"
      decimals="INF"
      id="ixv-205438"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_2_Member"
      decimals="INF"
      id="ixv-205439"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_3_Member"
      decimals="INF"
      id="ixv-205440"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_4_Member"
      decimals="INF"
      id="ixv-205441"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_5_Member"
      decimals="INF"
      id="ixv-205442"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_6_Member"
      decimals="INF"
      id="ixv-205443"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_7_Member"
      decimals="INF"
      id="ixv-205444"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242548_TH_8_Member"
      decimals="INF"
      id="ixv-205445"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-2467">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242530_ClassMember" id="ixv-2471">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242530_ClassMember" id="ixv-2482">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242530_ClassMember" id="ixv-2485">Fidelity Advisor&#xae; Sustainable Target Date 2065 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242530_ClassMember" id="ixv-2489">FTHDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242530_ClassMember" id="ixv-2508">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242530_ClassMember" id="ixv-2510">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242530_ClassMember" id="ixv-2515">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242530_ClassMember" id="ixv-2517">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242530_ClassMember" id="ixv-2520">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242530_ClassMember" id="ixv-2523">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242530_ClassMember" id="ixv-2530">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242530_ClassMember"
      decimals="0"
      id="ixv-205446"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242530_ClassMember"
      decimals="INF"
      id="ixv-205447"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242530_ClassMember" id="ixv-2572">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242530_ClassMember" id="ixv-2596">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,969


$12,558



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242530_LG_ClassMember_3YR" id="ixv-2615">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242530_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205448"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242530_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205449"
      unitRef="usd">11969</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242530_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205450"
      unitRef="usd">12558</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242530_LG_1_AdditionalIndexMember_3YR"
      id="ixv-2632">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242530_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205451"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242530_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205452"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242530_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205453"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242530_LG_2_AdditionalIndexMember_3YR"
      id="ixv-2649">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242530_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205454"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242530_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205455"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242530_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205456"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242530_ClassMember" id="ixv-2691">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.92%

12.81%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242530_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205457"
      unitRef="pure">0.0492</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242530_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205458"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242530_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205459"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242530_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205460"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242530_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205461"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242530_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205462"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242530_ClassMember" id="ixv-2746">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242530_ClassMember" id="ixv-2763">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242530_ClassMember" id="ixv-2767">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242530_ClassMember" id="ixv-2773">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242530_InstantMember"
      decimals="0"
      id="ixv-205463"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242530_InstantMember"
      decimals="INF"
      id="ixv-205464"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242530_ClassMember"
      decimals="0"
      id="ixv-205465"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242530_ClassMember"
      decimals="INF"
      id="ixv-205466"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242530_ClassMember" id="ixv-2848">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242530_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205467"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205468"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205469"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205470"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242530_ClassMember" id="ixv-2939">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242530_TH_0_Member"
      decimals="INF"
      id="ixv-205471"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_TH_1_Member"
      decimals="INF"
      id="ixv-205472"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_TH_2_Member"
      decimals="INF"
      id="ixv-205473"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_TH_3_Member"
      decimals="INF"
      id="ixv-205474"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_TH_4_Member"
      decimals="INF"
      id="ixv-205475"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242530_TH_5_Member"
      decimals="INF"
      id="ixv-205476"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242530_ClassMember" id="ixv-3024">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242530_ClassMember" id="ixv-3030">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242530_ClassMember" id="ixv-3034">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242530_ClassMember" id="ixv-3037">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242530_ClassMember" id="ixv-3041">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242530_ClassMember" id="ixv-3052">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-3110">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242598_ClassMember" id="ixv-3122">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242598_ClassMember" id="ixv-3125">Fidelity Advisor&#xae; Sustainable Target Date 2040 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242598_ClassMember" id="ixv-3129">FSYBX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242598_ClassMember" id="ixv-3148">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242598_ClassMember" id="ixv-3150">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242598_ClassMember" id="ixv-3155">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242598_ClassMember" id="ixv-3157">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242598_ClassMember" id="ixv-3160">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242598_ClassMember" id="ixv-3163">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242598_ClassMember" id="ixv-3170">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.48&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242598_ClassMember"
      decimals="0"
      id="ixv-205477"
      unitRef="usd">49</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242598_ClassMember"
      decimals="INF"
      id="ixv-205478"
      unitRef="pure">0.0048</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242598_ClassMember" id="ixv-3212">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242598_ClassMember" id="ixv-3236">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,862


$12,436



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242598_LG_ClassMember_3YR" id="ixv-3255">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242598_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205479"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242598_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205480"
      unitRef="usd">11862</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242598_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205481"
      unitRef="usd">12436</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242598_LG_1_AdditionalIndexMember_3YR"
      id="ixv-3272">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242598_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205482"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242598_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205483"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242598_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205484"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242598_LG_2_AdditionalIndexMember_3YR"
      id="ixv-3289">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242598_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205485"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242598_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205486"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242598_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205487"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242598_ClassMember" id="ixv-3331">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.84%

12.22%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242598_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205488"
      unitRef="pure">0.0484</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242598_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205489"
      unitRef="pure">0.1222</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242598_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205490"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242598_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205491"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242598_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205492"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242598_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205493"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242598_ClassMember" id="ixv-3386">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242598_ClassMember" id="ixv-3403">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242598_ClassMember" id="ixv-3407">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242598_ClassMember" id="ixv-3413">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242598_InstantMember"
      decimals="0"
      id="ixv-205494"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242598_InstantMember"
      decimals="INF"
      id="ixv-205495"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242598_ClassMember"
      decimals="0"
      id="ixv-205496"
      unitRef="usd">25445</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242598_ClassMember"
      decimals="INF"
      id="ixv-205497"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242598_ClassMember" id="ixv-3488">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242598_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205498"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205499"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205500"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205501"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242598_ClassMember" id="ixv-3579">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242598_TH_0_Member"
      decimals="INF"
      id="ixv-205502"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_TH_1_Member"
      decimals="INF"
      id="ixv-205503"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_TH_2_Member"
      decimals="INF"
      id="ixv-205504"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_TH_3_Member"
      decimals="INF"
      id="ixv-205505"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_TH_4_Member"
      decimals="INF"
      id="ixv-205506"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_TH_5_Member"
      decimals="INF"
      id="ixv-205507"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242598_TH_6_Member"
      decimals="INF"
      id="ixv-205508"
      unitRef="pure">0.009</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-3720">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242524_ClassMember" id="ixv-3724">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242524_ClassMember" id="ixv-3735">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242524_ClassMember" id="ixv-3738">Fidelity&#xae; Sustainable Target Date 2060 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242524_ClassMember" id="ixv-3742">FTGKX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242524_ClassMember" id="ixv-3761">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242524_ClassMember" id="ixv-3763">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242524_ClassMember" id="ixv-3768">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242524_ClassMember" id="ixv-3770">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242524_ClassMember" id="ixv-3773">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242524_ClassMember" id="ixv-3776">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242524_ClassMember" id="ixv-3783">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242524_ClassMember"
      decimals="0"
      id="ixv-205509"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242524_ClassMember"
      decimals="INF"
      id="ixv-205510"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242524_ClassMember" id="ixv-3825">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242524_ClassMember" id="ixv-3849">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,971


$12,563



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242524_LG_ClassMember_3YR" id="ixv-3868">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242524_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205511"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242524_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205512"
      unitRef="usd">11971</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242524_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205513"
      unitRef="usd">12563</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242524_LG_1_AdditionalIndexMember_3YR"
      id="ixv-3885">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242524_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205514"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242524_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205515"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242524_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205516"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242524_LG_2_AdditionalIndexMember_3YR"
      id="ixv-3902">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242524_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205517"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242524_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205518"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242524_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205519"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242524_ClassMember" id="ixv-3944">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.94%

12.83%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242524_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205520"
      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242524_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205521"
      unitRef="pure">0.1283</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242524_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205522"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242524_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205523"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242524_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205524"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242524_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205525"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242524_ClassMember" id="ixv-3999">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242524_ClassMember" id="ixv-4016">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242524_ClassMember" id="ixv-4020">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242524_ClassMember" id="ixv-4026">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242524_InstantMember"
      decimals="0"
      id="ixv-205526"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242524_InstantMember"
      decimals="INF"
      id="ixv-205527"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242524_ClassMember"
      decimals="0"
      id="ixv-205528"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242524_ClassMember"
      decimals="INF"
      id="ixv-205529"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242524_ClassMember" id="ixv-4101">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242524_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205530"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205531"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205532"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205533"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242524_ClassMember" id="ixv-4192">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242524_TH_0_Member"
      decimals="INF"
      id="ixv-205534"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_TH_1_Member"
      decimals="INF"
      id="ixv-205535"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_TH_2_Member"
      decimals="INF"
      id="ixv-205536"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_TH_3_Member"
      decimals="INF"
      id="ixv-205537"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_TH_4_Member"
      decimals="INF"
      id="ixv-205538"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242524_TH_5_Member"
      decimals="INF"
      id="ixv-205539"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242524_ClassMember" id="ixv-4277">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242524_ClassMember" id="ixv-4283">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242524_ClassMember" id="ixv-4287">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242524_ClassMember" id="ixv-4290">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242524_ClassMember" id="ixv-4294">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242524_ClassMember" id="ixv-4305">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-4363">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242594_ClassMember" id="ixv-4375">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242594_ClassMember" id="ixv-4378">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242594_ClassMember" id="ixv-4382">FSXVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242594_ClassMember" id="ixv-4401">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242594_ClassMember" id="ixv-4403">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242594_ClassMember" id="ixv-4408">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242594_ClassMember" id="ixv-4410">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242594_ClassMember" id="ixv-4413">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242594_ClassMember" id="ixv-4416">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242594_ClassMember" id="ixv-4423">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2040 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.48&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242594_ClassMember"
      decimals="0"
      id="ixv-205540"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242594_ClassMember"
      decimals="INF"
      id="ixv-205541"
      unitRef="pure">0.0048</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242594_ClassMember" id="ixv-4465">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242594_ClassMember" id="ixv-4489">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2040 Fund


$10,000

$11,859


$12,438



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242594_LG_ClassMember_3YR" id="ixv-4508">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2040 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242594_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205542"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242594_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205543"
      unitRef="usd">11859</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242594_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205544"
      unitRef="usd">12438</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242594_LG_1_AdditionalIndexMember_3YR"
      id="ixv-4525">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242594_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205545"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242594_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205546"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242594_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205547"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242594_LG_2_AdditionalIndexMember_3YR"
      id="ixv-4542">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242594_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205548"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242594_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205549"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242594_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205550"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242594_ClassMember" id="ixv-4584">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2040 Fund

4.88%

12.23%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
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      decimals="INF"
      id="ixv-205551"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242594_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205552"
      unitRef="pure">0.1223</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242594_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205553"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242594_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205554"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242594_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205555"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242594_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205556"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242594_ClassMember" id="ixv-4639">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242594_ClassMember" id="ixv-4656">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242594_ClassMember" id="ixv-4660">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242594_ClassMember" id="ixv-4666">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242594_InstantMember"
      decimals="0"
      id="ixv-205557"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242594_InstantMember"
      decimals="INF"
      id="ixv-205558"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      decimals="0"
      id="ixv-205559"
      unitRef="usd">25445</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
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      id="ixv-205560"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242594_ClassMember" id="ixv-4741">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242594_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205561"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205562"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205563"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205564"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242594_ClassMember" id="ixv-4832">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242594_TH_0_Member"
      decimals="INF"
      id="ixv-205565"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_TH_1_Member"
      decimals="INF"
      id="ixv-205566"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_TH_2_Member"
      decimals="INF"
      id="ixv-205567"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_TH_3_Member"
      decimals="INF"
      id="ixv-205568"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-205569"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_TH_5_Member"
      decimals="INF"
      id="ixv-205570"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242594_TH_6_Member"
      decimals="INF"
      id="ixv-205571"
      unitRef="pure">0.009</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-4973">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242559_ClassMember" id="ixv-4985">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242559_ClassMember" id="ixv-4988">Fidelity Advisor&#xae; Sustainable Target Date 2020 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242559_ClassMember" id="ixv-4992">FSWGX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242559_ClassMember" id="ixv-5011">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242559_ClassMember" id="ixv-5013">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242559_ClassMember" id="ixv-5018">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242559_ClassMember" id="ixv-5020">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242559_ClassMember" id="ixv-5023">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242559_ClassMember" id="ixv-5026">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242559_ClassMember" id="ixv-5033">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;146&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.43&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242559_ClassMember"
      decimals="0"
      id="ixv-205572"
      unitRef="usd">146</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242559_ClassMember"
      decimals="INF"
      id="ixv-205573"
      unitRef="pure">0.0143</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242559_ClassMember" id="ixv-5075">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242559_ClassMember" id="ixv-5099">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$10,862


$11,286



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242559_LG_ClassMember_3YR" id="ixv-5118">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242559_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205574"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242559_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205575"
      unitRef="usd">10862</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242559_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205576"
      unitRef="usd">11286</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242559_LG_1_AdditionalIndexMember_3YR"
      id="ixv-5135">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242559_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205577"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242559_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205578"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242559_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205579"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242559_LG_2_AdditionalIndexMember_3YR"
      id="ixv-5152">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242559_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205580"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242559_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205581"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242559_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205582"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242559_ClassMember" id="ixv-5194">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.90%

6.61%


Class C

3.90%

6.61%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_ClassMember_1YR"
      decimals="INF"
      id="ixv-205583"
      unitRef="pure">0.0290</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205584"
      unitRef="pure">0.0661</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205585"
      unitRef="pure">0.0390</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205586"
      unitRef="pure">0.0661</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205587"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205588"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205589"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242559_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205590"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242559_ClassMember" id="ixv-5261">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242559_ClassMember" id="ixv-5278">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242559_ClassMember" id="ixv-5282">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242559_ClassMember" id="ixv-5288">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242559_InstantMember"
      decimals="0"
      id="ixv-205591"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242559_InstantMember"
      decimals="INF"
      id="ixv-205592"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242559_ClassMember"
      decimals="0"
      id="ixv-205593"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242559_ClassMember"
      decimals="INF"
      id="ixv-205594"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242559_ClassMember" id="ixv-5363">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242559_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205595"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205596"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205597"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-205598"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205599"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242559_ClassMember" id="ixv-5467">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242559_TH_0_Member"
      decimals="INF"
      id="ixv-205600"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_1_Member"
      decimals="INF"
      id="ixv-205601"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_2_Member"
      decimals="INF"
      id="ixv-205602"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_3_Member"
      decimals="INF"
      id="ixv-205603"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_4_Member"
      decimals="INF"
      id="ixv-205604"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_5_Member"
      decimals="INF"
      id="ixv-205605"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_6_Member"
      decimals="INF"
      id="ixv-205606"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_7_Member"
      decimals="INF"
      id="ixv-205607"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242559_TH_8_Member"
      decimals="INF"
      id="ixv-205608"
      unitRef="pure">0.001</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-5628">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242528_ClassMember" id="ixv-5632">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242528_ClassMember" id="ixv-5643">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242528_ClassMember" id="ixv-5646">Fidelity&#xae; Sustainable Target Date 2065 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242528_ClassMember" id="ixv-5650">FTHGX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242528_ClassMember" id="ixv-5669">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242528_ClassMember" id="ixv-5671">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242528_ClassMember" id="ixv-5676">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242528_ClassMember" id="ixv-5678">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242528_ClassMember" id="ixv-5681">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242528_ClassMember" id="ixv-5684">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242528_ClassMember" id="ixv-5691">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242528_ClassMember"
      decimals="0"
      id="ixv-205609"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242528_ClassMember"
      decimals="INF"
      id="ixv-205610"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242528_ClassMember" id="ixv-5733">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242528_ClassMember" id="ixv-5757">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,969


$12,558



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242528_LG_ClassMember_3YR" id="ixv-5776">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242528_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205611"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242528_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205612"
      unitRef="usd">11969</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242528_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205613"
      unitRef="usd">12558</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242528_LG_1_AdditionalIndexMember_3YR"
      id="ixv-5793">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242528_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205614"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242528_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205615"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242528_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205616"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242528_LG_2_AdditionalIndexMember_3YR"
      id="ixv-5810">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242528_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205617"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242528_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205618"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242528_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205619"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242528_ClassMember" id="ixv-5852">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.92%

12.81%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242528_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205620"
      unitRef="pure">0.0492</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242528_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205621"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242528_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205622"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242528_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205623"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242528_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205624"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242528_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205625"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242528_ClassMember" id="ixv-5907">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242528_ClassMember" id="ixv-5924">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242528_ClassMember" id="ixv-5928">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242528_ClassMember" id="ixv-5934">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242528_InstantMember"
      decimals="0"
      id="ixv-205626"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242528_InstantMember"
      decimals="INF"
      id="ixv-205627"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242528_ClassMember"
      decimals="0"
      id="ixv-205628"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242528_ClassMember"
      decimals="INF"
      id="ixv-205629"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242528_ClassMember" id="ixv-6009">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242528_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205630"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205631"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205632"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205633"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242528_ClassMember" id="ixv-6100">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242528_TH_0_Member"
      decimals="INF"
      id="ixv-205634"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_TH_1_Member"
      decimals="INF"
      id="ixv-205635"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_TH_2_Member"
      decimals="INF"
      id="ixv-205636"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_TH_3_Member"
      decimals="INF"
      id="ixv-205637"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_TH_4_Member"
      decimals="INF"
      id="ixv-205638"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242528_TH_5_Member"
      decimals="INF"
      id="ixv-205639"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242528_ClassMember" id="ixv-6185">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242528_ClassMember" id="ixv-6191">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242528_ClassMember" id="ixv-6195">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242528_ClassMember" id="ixv-6198">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242528_ClassMember" id="ixv-6202">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242528_ClassMember" id="ixv-6213">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-6271">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242521_ClassMember" id="ixv-6275">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242521_ClassMember" id="ixv-6286">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242521_ClassMember" id="ixv-6289">Fidelity Advisor&#xae; Sustainable Target Date 2060 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242521_ClassMember" id="ixv-6293">FSZYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242521_ClassMember" id="ixv-6312">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242521_ClassMember" id="ixv-6314">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242521_ClassMember" id="ixv-6319">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242521_ClassMember" id="ixv-6321">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242521_ClassMember" id="ixv-6324">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242521_ClassMember" id="ixv-6327">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242521_ClassMember" id="ixv-6334">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242521_ClassMember"
      decimals="0"
      id="ixv-205640"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242521_ClassMember"
      decimals="INF"
      id="ixv-205641"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242521_ClassMember" id="ixv-6376">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242521_ClassMember" id="ixv-6400">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,954


$12,543



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242521_LG_ClassMember_3YR" id="ixv-6419">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242521_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205642"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242521_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205643"
      unitRef="usd">11954</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242521_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205644"
      unitRef="usd">12543</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242521_LG_1_AdditionalIndexMember_3YR"
      id="ixv-6436">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242521_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205645"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242521_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205646"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242521_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205647"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242521_LG_2_AdditionalIndexMember_3YR"
      id="ixv-6453">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242521_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205648"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242521_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205649"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242521_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205650"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242521_ClassMember" id="ixv-6495">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.93%

12.73%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242521_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205651"
      unitRef="pure">0.0493</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242521_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205652"
      unitRef="pure">0.1273</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242521_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205653"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242521_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205654"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242521_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205655"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242521_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205656"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242521_ClassMember" id="ixv-6550">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242521_ClassMember" id="ixv-6567">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242521_ClassMember" id="ixv-6571">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242521_ClassMember" id="ixv-6577">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242521_InstantMember"
      decimals="0"
      id="ixv-205657"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242521_InstantMember"
      decimals="INF"
      id="ixv-205658"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242521_ClassMember"
      decimals="0"
      id="ixv-205659"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242521_ClassMember"
      decimals="INF"
      id="ixv-205660"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242521_ClassMember" id="ixv-6652">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242521_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205661"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205662"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205663"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205664"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242521_ClassMember" id="ixv-6743">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242521_TH_0_Member"
      decimals="INF"
      id="ixv-205665"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_TH_1_Member"
      decimals="INF"
      id="ixv-205666"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_TH_2_Member"
      decimals="INF"
      id="ixv-205667"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_TH_3_Member"
      decimals="INF"
      id="ixv-205668"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_TH_4_Member"
      decimals="INF"
      id="ixv-205669"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242521_TH_5_Member"
      decimals="INF"
      id="ixv-205670"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242521_ClassMember" id="ixv-6828">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242521_ClassMember" id="ixv-6834">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242521_ClassMember" id="ixv-6838">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242521_ClassMember" id="ixv-6841">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242521_ClassMember" id="ixv-6845">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242521_ClassMember" id="ixv-6856">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-6914">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242584_ClassMember" id="ixv-6926">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242584_ClassMember" id="ixv-6929">Fidelity Advisor&#xae; Sustainable Target Date 2035 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242584_ClassMember" id="ixv-6933">FSXRX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242584_ClassMember" id="ixv-6952">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242584_ClassMember" id="ixv-6954">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242584_ClassMember" id="ixv-6959">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242584_ClassMember" id="ixv-6961">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242584_ClassMember" id="ixv-6964">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242584_ClassMember" id="ixv-6967">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242584_ClassMember" id="ixv-6974">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.37&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242584_ClassMember"
      decimals="0"
      id="ixv-205671"
      unitRef="usd">38</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242584_ClassMember"
      decimals="INF"
      id="ixv-205672"
      unitRef="pure">0.0037</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242584_ClassMember" id="ixv-7016">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242584_ClassMember" id="ixv-7040">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,556


$12,128



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242584_LG_ClassMember_3YR" id="ixv-7059">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242584_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205673"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242584_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205674"
      unitRef="usd">11556</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242584_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205675"
      unitRef="usd">12128</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242584_LG_1_AdditionalIndexMember_3YR"
      id="ixv-7076">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242584_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205676"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242584_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205677"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242584_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205678"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242584_LG_2_AdditionalIndexMember_3YR"
      id="ixv-7093">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242584_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205679"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242584_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205680"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242584_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205681"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242584_ClassMember" id="ixv-7135">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.95%

10.74%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242584_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205682"
      unitRef="pure">0.0495</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242584_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205683"
      unitRef="pure">0.1074</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242584_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205684"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242584_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205685"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242584_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205686"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242584_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205687"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242584_ClassMember" id="ixv-7190">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242584_ClassMember" id="ixv-7207">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242584_ClassMember" id="ixv-7211">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242584_ClassMember" id="ixv-7217">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242584_InstantMember"
      decimals="0"
      id="ixv-205688"
      unitRef="usd">5343383</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242584_InstantMember"
      decimals="INF"
      id="ixv-205689"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242584_ClassMember"
      decimals="0"
      id="ixv-205690"
      unitRef="usd">17388</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242584_ClassMember"
      decimals="INF"
      id="ixv-205691"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242584_ClassMember" id="ixv-7292">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242584_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205692"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205693"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205694"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205695"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242584_ClassMember" id="ixv-7383">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242584_TH_0_Member"
      decimals="INF"
      id="ixv-205696"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_TH_1_Member"
      decimals="INF"
      id="ixv-205697"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_TH_2_Member"
      decimals="INF"
      id="ixv-205698"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_TH_3_Member"
      decimals="INF"
      id="ixv-205699"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_TH_4_Member"
      decimals="INF"
      id="ixv-205700"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_TH_5_Member"
      decimals="INF"
      id="ixv-205701"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242584_TH_6_Member"
      decimals="INF"
      id="ixv-205702"
      unitRef="pure">0.027</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-7524">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242516_ClassMember" id="ixv-7528">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242516_ClassMember" id="ixv-7539">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242516_ClassMember" id="ixv-7542">Fidelity&#xae; Sustainable Target Date 2055 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242516_ClassMember" id="ixv-7546">FSZRX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242516_ClassMember" id="ixv-7565">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242516_ClassMember" id="ixv-7567">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242516_ClassMember" id="ixv-7572">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242516_ClassMember" id="ixv-7574">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242516_ClassMember" id="ixv-7577">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242516_ClassMember" id="ixv-7580">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242516_ClassMember" id="ixv-7587">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.29&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242516_ClassMember"
      decimals="0"
      id="ixv-205703"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242516_ClassMember"
      decimals="INF"
      id="ixv-205704"
      unitRef="pure">0.0029</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242516_ClassMember" id="ixv-7629">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242516_ClassMember" id="ixv-7653">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,983


$12,586



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242516_LG_ClassMember_3YR" id="ixv-7672">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242516_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205705"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242516_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205706"
      unitRef="usd">11983</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242516_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205707"
      unitRef="usd">12586</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242516_LG_1_AdditionalIndexMember_3YR"
      id="ixv-7689">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242516_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205708"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242516_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205709"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242516_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205710"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242516_LG_2_AdditionalIndexMember_3YR"
      id="ixv-7706">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242516_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205711"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242516_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205712"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242516_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205713"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242516_ClassMember" id="ixv-7748">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.04%

12.94%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242516_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205714"
      unitRef="pure">0.0504</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242516_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205715"
      unitRef="pure">0.1294</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242516_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205716"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242516_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205717"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242516_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205718"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242516_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205719"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242516_ClassMember" id="ixv-7803">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242516_ClassMember" id="ixv-7820">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242516_ClassMember" id="ixv-7824">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242516_ClassMember" id="ixv-7830">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242516_InstantMember"
      decimals="0"
      id="ixv-205720"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242516_InstantMember"
      decimals="INF"
      id="ixv-205721"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242516_ClassMember"
      decimals="0"
      id="ixv-205722"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242516_ClassMember"
      decimals="INF"
      id="ixv-205723"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242516_ClassMember" id="ixv-7905">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242516_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205724"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205725"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205726"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205727"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242516_ClassMember" id="ixv-7996">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242516_TH_0_Member"
      decimals="INF"
      id="ixv-205728"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_TH_1_Member"
      decimals="INF"
      id="ixv-205729"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_TH_2_Member"
      decimals="INF"
      id="ixv-205730"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_TH_3_Member"
      decimals="INF"
      id="ixv-205731"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_TH_4_Member"
      decimals="INF"
      id="ixv-205732"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242516_TH_5_Member"
      decimals="INF"
      id="ixv-205733"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242516_ClassMember" id="ixv-8081">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242516_ClassMember" id="ixv-8087">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242516_ClassMember" id="ixv-8091">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242516_ClassMember" id="ixv-8094">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242516_ClassMember" id="ixv-8098">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242516_ClassMember" id="ixv-8113">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-8169">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242498_ClassMember" id="ixv-8181">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242498_ClassMember" id="ixv-8184">Fidelity Advisor&#xae; Sustainable Target Date Income Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242498_ClassMember" id="ixv-8188">FSUEX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242498_ClassMember" id="ixv-8207">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242498_ClassMember" id="ixv-8209">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242498_ClassMember" id="ixv-8214">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242498_ClassMember" id="ixv-8216">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242498_ClassMember" id="ixv-8219">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242498_ClassMember" id="ixv-8222">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242498_ClassMember" id="ixv-8229">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;68&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.66&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242498_ClassMember"
      decimals="0"
      id="ixv-205734"
      unitRef="usd">68</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242498_ClassMember"
      decimals="INF"
      id="ixv-205735"
      unitRef="pure">0.0066</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242498_ClassMember" id="ixv-8271">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242498_ClassMember" id="ixv-8295">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$9,864


$10,340



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242498_LG_ClassMember_3YR" id="ixv-8316">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242498_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205736"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242498_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205737"
      unitRef="usd">9864</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242498_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205738"
      unitRef="usd">10340</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242498_LG_1_AdditionalIndexMember_3YR"
      id="ixv-8333">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242498_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205739"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242498_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205740"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242498_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205741"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242498_LG_2_AdditionalIndexMember_3YR"
      id="ixv-8350">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242498_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205742"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242498_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205743"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242498_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205744"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242498_ClassMember" id="ixv-8392">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.20%

1.79%


Class A (without 5.75% sales charge)

4.83%

5.02%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_ClassMember_1YR"
      decimals="INF"
      id="ixv-205745"
      unitRef="pure">-0.0120</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205746"
      unitRef="pure">0.0179</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205747"
      unitRef="pure">0.0483</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205748"
      unitRef="pure">0.0502</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205749"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205750"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205751"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242498_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205752"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242498_ClassMember" id="ixv-8459">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242498_ClassMember" id="ixv-8476">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242498_ClassMember" id="ixv-8480">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242498_ClassMember" id="ixv-8486">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242498_InstantMember"
      decimals="0"
      id="ixv-205753"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242498_InstantMember"
      decimals="INF"
      id="ixv-205754"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242498_ClassMember"
      decimals="0"
      id="ixv-205755"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242498_ClassMember"
      decimals="INF"
      id="ixv-205756"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242498_ClassMember" id="ixv-8561">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242498_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205757"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205758"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205759"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-205760"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205761"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242498_ClassMember" id="ixv-8665">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242498_TH_0_Member"
      decimals="INF"
      id="ixv-205762"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_1_Member"
      decimals="INF"
      id="ixv-205763"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_2_Member"
      decimals="INF"
      id="ixv-205764"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_3_Member"
      decimals="INF"
      id="ixv-205765"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_4_Member"
      decimals="INF"
      id="ixv-205766"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_5_Member"
      decimals="INF"
      id="ixv-205767"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_6_Member"
      decimals="INF"
      id="ixv-205768"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_7_Member"
      decimals="INF"
      id="ixv-205769"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242498_TH_8_Member"
      decimals="INF"
      id="ixv-205770"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-8826">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242605_ClassMember" id="ixv-8838">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242605_ClassMember" id="ixv-8841">Fidelity Advisor&#xae; Sustainable Target Date 2045 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242605_ClassMember" id="ixv-8845">FSYPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242605_ClassMember" id="ixv-8864">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242605_ClassMember" id="ixv-8866">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242605_ClassMember" id="ixv-8871">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242605_ClassMember" id="ixv-8873">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242605_ClassMember" id="ixv-8876">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242605_ClassMember" id="ixv-8879">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242605_ClassMember" id="ixv-8886">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;101&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242605_ClassMember"
      decimals="0"
      id="ixv-205771"
      unitRef="usd">101</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242605_ClassMember"
      decimals="INF"
      id="ixv-205772"
      unitRef="pure">0.0099</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242605_ClassMember" id="ixv-8928">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242605_ClassMember" id="ixv-8952">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$11,491


$11,983



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242605_LG_ClassMember_3YR" id="ixv-8973">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242605_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205773"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242605_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205774"
      unitRef="usd">11491</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242605_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205775"
      unitRef="usd">11983</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242605_LG_1_AdditionalIndexMember_3YR"
      id="ixv-8990">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242605_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205776"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242605_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205777"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242605_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205778"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242605_LG_2_AdditionalIndexMember_3YR"
      id="ixv-9007">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242605_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205779"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242605_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205780"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242605_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205781"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242605_ClassMember" id="ixv-9049">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.64%

10.04%


Class M (without 3.50% sales charge)

4.29%

12.14%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_ClassMember_1YR"
      decimals="INF"
      id="ixv-205782"
      unitRef="pure">0.0064</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205783"
      unitRef="pure">0.1004</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205784"
      unitRef="pure">0.0429</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205785"
      unitRef="pure">0.1214</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205786"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205787"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205788"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242605_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205789"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242605_ClassMember" id="ixv-9115">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242605_ClassMember" id="ixv-9132">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242605_ClassMember" id="ixv-9136">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242605_ClassMember" id="ixv-9142">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242605_InstantMember"
      decimals="0"
      id="ixv-205790"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242605_InstantMember"
      decimals="INF"
      id="ixv-205791"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242605_ClassMember"
      decimals="0"
      id="ixv-205792"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242605_ClassMember"
      decimals="INF"
      id="ixv-205793"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242605_ClassMember" id="ixv-9217">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242605_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205794"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205795"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205796"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205797"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242605_ClassMember" id="ixv-9308">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242605_TH_0_Member"
      decimals="INF"
      id="ixv-205798"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_TH_1_Member"
      decimals="INF"
      id="ixv-205799"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_TH_2_Member"
      decimals="INF"
      id="ixv-205800"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_TH_3_Member"
      decimals="INF"
      id="ixv-205801"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_TH_4_Member"
      decimals="INF"
      id="ixv-205802"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242605_TH_5_Member"
      decimals="INF"
      id="ixv-205803"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-9439">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242550_ClassMember" id="ixv-9451">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242550_ClassMember" id="ixv-9454">Fidelity Advisor&#xae; Sustainable Target Date 2015 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242550_ClassMember" id="ixv-9458">FSVPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242550_ClassMember" id="ixv-9477">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242550_ClassMember" id="ixv-9479">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242550_ClassMember" id="ixv-9484">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242550_ClassMember" id="ixv-9486">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242550_ClassMember" id="ixv-9489">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242550_ClassMember" id="ixv-9492">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242550_ClassMember" id="ixv-9499">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;145&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.42&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242550_ClassMember"
      decimals="0"
      id="ixv-205804"
      unitRef="usd">145</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242550_ClassMember"
      decimals="INF"
      id="ixv-205805"
      unitRef="pure">0.0142</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242550_ClassMember" id="ixv-9541">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242550_ClassMember" id="ixv-9565">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$10,708


$11,124



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242550_LG_ClassMember_3YR" id="ixv-9584">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242550_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205806"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242550_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205807"
      unitRef="usd">10708</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242550_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205808"
      unitRef="usd">11124</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242550_LG_1_AdditionalIndexMember_3YR"
      id="ixv-9601">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242550_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205809"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242550_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205810"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242550_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205811"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242550_LG_2_AdditionalIndexMember_3YR"
      id="ixv-9618">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242550_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205812"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242550_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205813"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242550_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205814"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242550_ClassMember" id="ixv-9660">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.89%

5.80%


Class C

3.89%

5.80%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_ClassMember_1YR"
      decimals="INF"
      id="ixv-205815"
      unitRef="pure">0.0289</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205816"
      unitRef="pure">0.0580</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205817"
      unitRef="pure">0.0389</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205818"
      unitRef="pure">0.0580</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205819"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205820"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205821"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242550_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205822"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242550_ClassMember" id="ixv-9727">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242550_ClassMember" id="ixv-9744">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242550_ClassMember" id="ixv-9748">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242550_ClassMember" id="ixv-9754">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242550_InstantMember"
      decimals="0"
      id="ixv-205823"
      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242550_InstantMember"
      decimals="INF"
      id="ixv-205824"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242550_ClassMember"
      decimals="0"
      id="ixv-205825"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242550_ClassMember"
      decimals="INF"
      id="ixv-205826"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242550_ClassMember" id="ixv-9829">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242550_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205827"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205828"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205829"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-205830"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205831"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242550_ClassMember" id="ixv-9933">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242550_TH_0_Member"
      decimals="INF"
      id="ixv-205832"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_1_Member"
      decimals="INF"
      id="ixv-205833"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_2_Member"
      decimals="INF"
      id="ixv-205834"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_3_Member"
      decimals="INF"
      id="ixv-205835"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_4_Member"
      decimals="INF"
      id="ixv-205836"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_5_Member"
      decimals="INF"
      id="ixv-205837"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_6_Member"
      decimals="INF"
      id="ixv-205838"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_7_Member"
      decimals="INF"
      id="ixv-205839"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242550_TH_8_Member"
      decimals="INF"
      id="ixv-205840"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-10094">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242591_ClassMember" id="ixv-10106">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242591_ClassMember" id="ixv-10109">Fidelity&#xae; Sustainable Target Date 2040 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242591_ClassMember" id="ixv-10113">FSYFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242591_ClassMember" id="ixv-10132">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242591_ClassMember" id="ixv-10134">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242591_ClassMember" id="ixv-10139">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242591_ClassMember" id="ixv-10141">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242591_ClassMember" id="ixv-10144">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242591_ClassMember" id="ixv-10147">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242591_ClassMember" id="ixv-10154">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242591_ClassMember"
      decimals="0"
      id="ixv-205841"
      unitRef="usd">39</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242591_ClassMember"
      decimals="INF"
      id="ixv-205842"
      unitRef="pure">0.0038</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242591_ClassMember" id="ixv-10196">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242591_ClassMember" id="ixv-10220">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,869


$12,466



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242591_LG_ClassMember_3YR" id="ixv-10239">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242591_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205843"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242591_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205844"
      unitRef="usd">11869</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242591_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205845"
      unitRef="usd">12466</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242591_LG_1_AdditionalIndexMember_3YR"
      id="ixv-10256">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242591_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205846"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242591_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205847"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242591_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205848"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242591_LG_2_AdditionalIndexMember_3YR"
      id="ixv-10273">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242591_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205849"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242591_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205850"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242591_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205851"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242591_ClassMember" id="ixv-10315">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

5.03%

12.37%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242591_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205852"
      unitRef="pure">0.0503</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242591_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205853"
      unitRef="pure">0.1237</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242591_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205854"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242591_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205855"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242591_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205856"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242591_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205857"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242591_ClassMember" id="ixv-10370">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242591_ClassMember" id="ixv-10387">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242591_ClassMember" id="ixv-10391">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242591_ClassMember" id="ixv-10397">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242591_InstantMember"
      decimals="0"
      id="ixv-205858"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242591_InstantMember"
      decimals="INF"
      id="ixv-205859"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242591_ClassMember"
      decimals="0"
      id="ixv-205860"
      unitRef="usd">25445</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242591_ClassMember"
      decimals="INF"
      id="ixv-205861"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242591_ClassMember" id="ixv-10472">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242591_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205862"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205863"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205864"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205865"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242591_ClassMember" id="ixv-10563">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242591_TH_0_Member"
      decimals="INF"
      id="ixv-205866"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_TH_1_Member"
      decimals="INF"
      id="ixv-205867"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_TH_2_Member"
      decimals="INF"
      id="ixv-205868"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_TH_3_Member"
      decimals="INF"
      id="ixv-205869"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_TH_4_Member"
      decimals="INF"
      id="ixv-205870"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_TH_5_Member"
      decimals="INF"
      id="ixv-205871"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242591_TH_6_Member"
      decimals="INF"
      id="ixv-205872"
      unitRef="pure">0.009</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-10704">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242570_ClassMember" id="ixv-10716">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242570_ClassMember" id="ixv-10719">Fidelity Advisor&#xae; Sustainable Target Date 2025 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242570_ClassMember" id="ixv-10723">FSWQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242570_ClassMember" id="ixv-10742">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242570_ClassMember" id="ixv-10744">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242570_ClassMember" id="ixv-10749">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242570_ClassMember" id="ixv-10751">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242570_ClassMember" id="ixv-10754">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242570_ClassMember" id="ixv-10757">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242570_ClassMember" id="ixv-10764">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;72&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.70&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242570_ClassMember"
      decimals="0"
      id="ixv-205873"
      unitRef="usd">72</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242570_ClassMember"
      decimals="INF"
      id="ixv-205874"
      unitRef="pure">0.0070</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242570_ClassMember" id="ixv-10806">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242570_ClassMember" id="ixv-10830">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$10,452


$10,922



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242570_LG_ClassMember_3YR" id="ixv-10851">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242570_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205875"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242570_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205876"
      unitRef="usd">10452</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242570_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205877"
      unitRef="usd">10922</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242570_LG_1_AdditionalIndexMember_3YR"
      id="ixv-10868">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242570_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205878"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242570_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205879"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242570_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205880"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242570_LG_2_AdditionalIndexMember_3YR"
      id="ixv-10885">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242570_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205881"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242570_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205882"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242570_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205883"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242570_ClassMember" id="ixv-10927">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.52%

4.77%


Class A (without 5.75% sales charge)

4.49%

8.11%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_ClassMember_1YR"
      decimals="INF"
      id="ixv-205884"
      unitRef="pure">-0.0152</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205885"
      unitRef="pure">0.0477</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205886"
      unitRef="pure">0.0449</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205887"
      unitRef="pure">0.0811</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205888"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205889"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205890"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242570_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205891"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242570_ClassMember" id="ixv-10994">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242570_ClassMember" id="ixv-11011">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242570_ClassMember" id="ixv-11015">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242570_ClassMember" id="ixv-11021">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242570_InstantMember"
      decimals="0"
      id="ixv-205892"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242570_InstantMember"
      decimals="INF"
      id="ixv-205893"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242570_ClassMember"
      decimals="0"
      id="ixv-205894"
      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242570_ClassMember"
      decimals="INF"
      id="ixv-205895"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242570_ClassMember" id="ixv-11096">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242570_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205896"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205897"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205898"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205899"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242570_ClassMember" id="ixv-11187">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242570_TH_0_Member"
      decimals="INF"
      id="ixv-205900"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_TH_1_Member"
      decimals="INF"
      id="ixv-205901"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_TH_2_Member"
      decimals="INF"
      id="ixv-205902"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_TH_3_Member"
      decimals="INF"
      id="ixv-205903"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_TH_4_Member"
      decimals="INF"
      id="ixv-205904"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_TH_5_Member"
      decimals="INF"
      id="ixv-205905"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242570_TH_6_Member"
      decimals="INF"
      id="ixv-205906"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-11328">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242553_ClassMember" id="ixv-11340">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242553_ClassMember" id="ixv-11343">Fidelity Advisor&#xae; Sustainable Target Date 2015 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242553_ClassMember" id="ixv-11347">FSVUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242553_ClassMember" id="ixv-11366">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242553_ClassMember" id="ixv-11368">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242553_ClassMember" id="ixv-11373">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242553_ClassMember" id="ixv-11375">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242553_ClassMember" id="ixv-11378">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242553_ClassMember" id="ixv-11381">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242553_ClassMember" id="ixv-11388">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;43&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.42&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242553_ClassMember"
      decimals="0"
      id="ixv-205907"
      unitRef="usd">43</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242553_ClassMember"
      decimals="INF"
      id="ixv-205908"
      unitRef="pure">0.0042</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242553_ClassMember" id="ixv-11430">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242553_ClassMember" id="ixv-11454">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$10,803


$11,344



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242553_LG_ClassMember_3YR" id="ixv-11473">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242553_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205909"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242553_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205910"
      unitRef="usd">10803</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242553_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205911"
      unitRef="usd">11344</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242553_LG_1_AdditionalIndexMember_3YR"
      id="ixv-11490">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242553_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205912"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242553_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205913"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242553_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205914"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242553_LG_2_AdditionalIndexMember_3YR"
      id="ixv-11507">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242553_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205915"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242553_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205916"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242553_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205917"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242553_ClassMember" id="ixv-11549">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

5.01%

6.90%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242553_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205918"
      unitRef="pure">0.0501</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242553_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205919"
      unitRef="pure">0.0690</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242553_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205920"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242553_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205921"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242553_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205922"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242553_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205923"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242553_ClassMember" id="ixv-11604">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242553_ClassMember" id="ixv-11621">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242553_ClassMember" id="ixv-11625">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242553_ClassMember" id="ixv-11631">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
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      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
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      id="ixv-205925"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      decimals="0"
      id="ixv-205926"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242553_ClassMember"
      decimals="INF"
      id="ixv-205927"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242553_ClassMember" id="ixv-11706">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-205928"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205929"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205930"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-205931"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205932"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242553_ClassMember" id="ixv-11810">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242553_TH_0_Member"
      decimals="INF"
      id="ixv-205933"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_1_Member"
      decimals="INF"
      id="ixv-205934"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_2_Member"
      decimals="INF"
      id="ixv-205935"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_3_Member"
      decimals="INF"
      id="ixv-205936"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_4_Member"
      decimals="INF"
      id="ixv-205937"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_5_Member"
      decimals="INF"
      id="ixv-205938"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_6_Member"
      decimals="INF"
      id="ixv-205939"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_7_Member"
      decimals="INF"
      id="ixv-205940"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242553_TH_8_Member"
      decimals="INF"
      id="ixv-205941"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-11971">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242541_ClassMember" id="ixv-11983">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242541_ClassMember" id="ixv-11986">Fidelity Advisor&#xae; Sustainable Target Date 2010 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242541_ClassMember" id="ixv-11990">FSVGX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242541_ClassMember" id="ixv-12009">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242541_ClassMember" id="ixv-12011">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242541_ClassMember" id="ixv-12016">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242541_ClassMember" id="ixv-12018">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242541_ClassMember" id="ixv-12021">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242541_ClassMember" id="ixv-12024">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242541_ClassMember" id="ixv-12031">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;42&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.41&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242541_ClassMember"
      decimals="0"
      id="ixv-205942"
      unitRef="usd">42</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242541_ClassMember"
      decimals="INF"
      id="ixv-205943"
      unitRef="pure">0.0041</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242541_ClassMember" id="ixv-12073">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242541_ClassMember" id="ixv-12097">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$10,639


$11,181



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242541_LG_ClassMember_3YR" id="ixv-12116">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242541_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205944"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242541_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205945"
      unitRef="usd">10639</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242541_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205946"
      unitRef="usd">11181</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242541_LG_1_AdditionalIndexMember_3YR"
      id="ixv-12133">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242541_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205947"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242541_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205948"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242541_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205949"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242541_LG_2_AdditionalIndexMember_3YR"
      id="ixv-12150">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242541_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205950"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242541_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205951"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242541_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205952"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242541_ClassMember" id="ixv-12192">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

5.09%

6.08%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242541_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205953"
      unitRef="pure">0.0509</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242541_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205954"
      unitRef="pure">0.0608</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242541_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205955"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242541_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205956"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242541_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205957"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242541_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205958"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242541_ClassMember" id="ixv-12247">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242541_ClassMember" id="ixv-12264">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242541_ClassMember" id="ixv-12268">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242541_ClassMember" id="ixv-12274">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242541_InstantMember"
      decimals="0"
      id="ixv-205959"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242541_InstantMember"
      decimals="INF"
      id="ixv-205960"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242541_ClassMember"
      decimals="0"
      id="ixv-205961"
      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242541_ClassMember"
      decimals="INF"
      id="ixv-205962"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242541_ClassMember" id="ixv-12349">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242541_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-205963"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-205964"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-205965"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-205966"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-205967"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242541_ClassMember" id="ixv-12453">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242541_TH_0_Member"
      decimals="INF"
      id="ixv-205968"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_1_Member"
      decimals="INF"
      id="ixv-205969"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_2_Member"
      decimals="INF"
      id="ixv-205970"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_3_Member"
      decimals="INF"
      id="ixv-205971"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_4_Member"
      decimals="INF"
      id="ixv-205972"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_5_Member"
      decimals="INF"
      id="ixv-205973"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_6_Member"
      decimals="INF"
      id="ixv-205974"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_7_Member"
      decimals="INF"
      id="ixv-205975"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242541_TH_8_Member"
      decimals="INF"
      id="ixv-205976"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-12614">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242532_ClassMember" id="ixv-12618">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242532_ClassMember" id="ixv-12629">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242532_ClassMember" id="ixv-12632">Fidelity Advisor&#xae; Sustainable Target Date 2065 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242532_ClassMember" id="ixv-12636">FTGYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242532_ClassMember" id="ixv-12655">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242532_ClassMember" id="ixv-12657">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242532_ClassMember" id="ixv-12662">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242532_ClassMember" id="ixv-12664">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242532_ClassMember" id="ixv-12667">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242532_ClassMember" id="ixv-12670">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242532_ClassMember" id="ixv-12677">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;152&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242532_ClassMember"
      decimals="0"
      id="ixv-205977"
      unitRef="usd">152</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242532_ClassMember"
      decimals="INF"
      id="ixv-205978"
      unitRef="pure">0.0149</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242532_ClassMember" id="ixv-12719">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242532_ClassMember" id="ixv-12743">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,852


$12,306



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242532_LG_ClassMember_3YR" id="ixv-12762">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242532_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-205979"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242532_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-205980"
      unitRef="usd">11852</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242532_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-205981"
      unitRef="usd">12306</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242532_LG_1_AdditionalIndexMember_3YR"
      id="ixv-12779">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242532_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205982"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242532_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205983"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242532_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205984"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242532_LG_2_AdditionalIndexMember_3YR"
      id="ixv-12796">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242532_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-205985"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242532_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-205986"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242532_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-205987"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242532_ClassMember" id="ixv-12838">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.83%

11.60%


Class C

3.83%

11.60%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_ClassMember_1YR"
      decimals="INF"
      id="ixv-205988"
      unitRef="pure">0.0283</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205989"
      unitRef="pure">0.1160</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-205990"
      unitRef="pure">0.0383</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-205991"
      unitRef="pure">0.1160</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-205992"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-205993"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-205994"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242532_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-205995"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242532_ClassMember" id="ixv-12905">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242532_ClassMember" id="ixv-12922">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242532_ClassMember" id="ixv-12926">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242532_ClassMember" id="ixv-12932">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242532_InstantMember"
      decimals="0"
      id="ixv-205996"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242532_InstantMember"
      decimals="INF"
      id="ixv-205997"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242532_ClassMember"
      decimals="0"
      id="ixv-205998"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242532_ClassMember"
      decimals="INF"
      id="ixv-205999"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242532_ClassMember" id="ixv-13007">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242532_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206000"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206001"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206002"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206003"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242532_ClassMember" id="ixv-13098">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242532_TH_0_Member"
      decimals="INF"
      id="ixv-206004"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_TH_1_Member"
      decimals="INF"
      id="ixv-206005"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_TH_2_Member"
      decimals="INF"
      id="ixv-206006"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_TH_3_Member"
      decimals="INF"
      id="ixv-206007"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_TH_4_Member"
      decimals="INF"
      id="ixv-206008"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242532_TH_5_Member"
      decimals="INF"
      id="ixv-206009"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242532_ClassMember" id="ixv-13183">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242532_ClassMember" id="ixv-13189">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242532_ClassMember" id="ixv-13193">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242532_ClassMember" id="ixv-13196">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242532_ClassMember" id="ixv-13200">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242532_ClassMember" id="ixv-13211">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-13269">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242585_ClassMember" id="ixv-13281">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242585_ClassMember" id="ixv-13284">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242585_ClassMember" id="ixv-13288">FSXKX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242585_ClassMember" id="ixv-13307">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242585_ClassMember" id="ixv-13309">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242585_ClassMember" id="ixv-13314">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242585_ClassMember" id="ixv-13316">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242585_ClassMember" id="ixv-13319">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242585_ClassMember" id="ixv-13322">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242585_ClassMember" id="ixv-13329">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2035 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.47&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242585_ClassMember"
      decimals="0"
      id="ixv-206010"
      unitRef="usd">49</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242585_ClassMember"
      decimals="INF"
      id="ixv-206011"
      unitRef="pure">0.0047</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242585_ClassMember" id="ixv-13371">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242585_ClassMember" id="ixv-13395">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2035 Fund


$10,000

$11,548


$12,112



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242585_LG_ClassMember_3YR" id="ixv-13414">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2035 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242585_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206012"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242585_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206013"
      unitRef="usd">11548</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242585_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206014"
      unitRef="usd">12112</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242585_LG_1_AdditionalIndexMember_3YR"
      id="ixv-13431">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242585_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206015"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242585_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206016"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242585_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206017"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242585_LG_2_AdditionalIndexMember_3YR"
      id="ixv-13448">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242585_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206018"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242585_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206019"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242585_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206020"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242585_ClassMember" id="ixv-13490">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2035 Fund

4.89%

10.67%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242585_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206021"
      unitRef="pure">0.0489</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242585_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206022"
      unitRef="pure">0.1067</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242585_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206023"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242585_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206024"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242585_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206025"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242585_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206026"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242585_ClassMember" id="ixv-13545">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242585_ClassMember" id="ixv-13562">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242585_ClassMember" id="ixv-13566">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242585_ClassMember" id="ixv-13572">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242585_InstantMember"
      decimals="0"
      id="ixv-206027"
      unitRef="usd">5343383</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242585_InstantMember"
      decimals="INF"
      id="ixv-206028"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242585_ClassMember"
      decimals="0"
      id="ixv-206029"
      unitRef="usd">17388</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242585_ClassMember"
      decimals="INF"
      id="ixv-206030"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242585_ClassMember" id="ixv-13647">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242585_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206031"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206032"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206033"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206034"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242585_ClassMember" id="ixv-13738">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242585_TH_0_Member"
      decimals="INF"
      id="ixv-206035"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_TH_1_Member"
      decimals="INF"
      id="ixv-206036"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_TH_2_Member"
      decimals="INF"
      id="ixv-206037"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_TH_3_Member"
      decimals="INF"
      id="ixv-206038"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_TH_4_Member"
      decimals="INF"
      id="ixv-206039"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_TH_5_Member"
      decimals="INF"
      id="ixv-206040"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242585_TH_6_Member"
      decimals="INF"
      id="ixv-206041"
      unitRef="pure">0.027</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-13879">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242580_ClassMember" id="ixv-13891">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242580_ClassMember" id="ixv-13894">Fidelity Advisor&#xae; Sustainable Target Date 2030 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242580_ClassMember" id="ixv-13898">FSXEX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242580_ClassMember" id="ixv-13917">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242580_ClassMember" id="ixv-13919">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242580_ClassMember" id="ixv-13924">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242580_ClassMember" id="ixv-13926">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242580_ClassMember" id="ixv-13929">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242580_ClassMember" id="ixv-13932">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242580_ClassMember" id="ixv-13939">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;47&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.46&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242580_ClassMember"
      decimals="0"
      id="ixv-206042"
      unitRef="usd">47</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242580_ClassMember"
      decimals="INF"
      id="ixv-206043"
      unitRef="pure">0.0046</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242580_ClassMember" id="ixv-13981">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242580_ClassMember" id="ixv-14005">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,266


$11,802



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242580_LG_ClassMember_3YR" id="ixv-14024">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242580_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206044"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242580_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206045"
      unitRef="usd">11266</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242580_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206046"
      unitRef="usd">11802</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242580_LG_1_AdditionalIndexMember_3YR"
      id="ixv-14041">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242580_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206047"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242580_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206048"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242580_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206049"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242580_LG_2_AdditionalIndexMember_3YR"
      id="ixv-14058">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242580_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206050"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242580_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206051"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242580_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206052"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242580_ClassMember" id="ixv-14100">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.76%

9.16%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242580_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206053"
      unitRef="pure">0.0476</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242580_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206054"
      unitRef="pure">0.0916</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242580_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206055"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242580_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206056"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242580_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206057"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242580_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206058"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242580_ClassMember" id="ixv-14155">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242580_ClassMember" id="ixv-14172">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242580_ClassMember" id="ixv-14176">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242580_ClassMember" id="ixv-14182">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242580_InstantMember"
      decimals="0"
      id="ixv-206059"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242580_InstantMember"
      decimals="INF"
      id="ixv-206060"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242580_ClassMember"
      decimals="0"
      id="ixv-206061"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242580_ClassMember"
      decimals="INF"
      id="ixv-206062"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242580_ClassMember" id="ixv-14257">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242580_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206063"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206064"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206065"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206066"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242580_ClassMember" id="ixv-14348">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242580_TH_0_Member"
      decimals="INF"
      id="ixv-206067"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_TH_1_Member"
      decimals="INF"
      id="ixv-206068"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_TH_2_Member"
      decimals="INF"
      id="ixv-206069"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_TH_3_Member"
      decimals="INF"
      id="ixv-206070"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_TH_4_Member"
      decimals="INF"
      id="ixv-206071"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_TH_5_Member"
      decimals="INF"
      id="ixv-206072"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242580_TH_6_Member"
      decimals="INF"
      id="ixv-206073"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-14489">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242519_ClassMember" id="ixv-14493">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242519_ClassMember" id="ixv-14504">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242519_ClassMember" id="ixv-14507">Fidelity Advisor&#xae; Sustainable Target Date 2060 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242519_ClassMember" id="ixv-14511">FSZWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242519_ClassMember" id="ixv-14530">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242519_ClassMember" id="ixv-14532">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242519_ClassMember" id="ixv-14537">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242519_ClassMember" id="ixv-14539">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242519_ClassMember" id="ixv-14542">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242519_ClassMember" id="ixv-14545">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242519_ClassMember" id="ixv-14552">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;101&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242519_ClassMember"
      decimals="0"
      id="ixv-206074"
      unitRef="usd">101</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242519_ClassMember"
      decimals="INF"
      id="ixv-206075"
      unitRef="pure">0.0099</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242519_ClassMember" id="ixv-14594">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242519_ClassMember" id="ixv-14618">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$11,493


$11,990



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242519_LG_ClassMember_3YR" id="ixv-14639">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242519_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206076"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242519_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206077"
      unitRef="usd">11493</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242519_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206078"
      unitRef="usd">11990</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242519_LG_1_AdditionalIndexMember_3YR"
      id="ixv-14656">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242519_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206079"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242519_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206080"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242519_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206081"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242519_LG_2_AdditionalIndexMember_3YR"
      id="ixv-14673">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242519_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206082"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242519_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206083"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242519_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206084"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242519_ClassMember" id="ixv-14715">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.67%

10.07%


Class M (without 3.50% sales charge)

4.32%

12.17%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_ClassMember_1YR"
      decimals="INF"
      id="ixv-206085"
      unitRef="pure">0.0067</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206086"
      unitRef="pure">0.1007</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206087"
      unitRef="pure">0.0432</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206088"
      unitRef="pure">0.1217</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206089"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206090"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206091"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242519_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206092"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242519_ClassMember" id="ixv-14781">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242519_ClassMember" id="ixv-14798">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242519_ClassMember" id="ixv-14802">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242519_ClassMember" id="ixv-14808">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242519_InstantMember"
      decimals="0"
      id="ixv-206093"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242519_InstantMember"
      decimals="INF"
      id="ixv-206094"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242519_ClassMember"
      decimals="0"
      id="ixv-206095"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242519_ClassMember"
      decimals="INF"
      id="ixv-206096"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242519_ClassMember" id="ixv-14883">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242519_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206097"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206098"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206099"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206100"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242519_ClassMember" id="ixv-14974">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242519_TH_0_Member"
      decimals="INF"
      id="ixv-206101"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_TH_1_Member"
      decimals="INF"
      id="ixv-206102"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_TH_2_Member"
      decimals="INF"
      id="ixv-206103"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_TH_3_Member"
      decimals="INF"
      id="ixv-206104"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_TH_4_Member"
      decimals="INF"
      id="ixv-206105"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242519_TH_5_Member"
      decimals="INF"
      id="ixv-206106"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242519_ClassMember" id="ixv-15059">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242519_ClassMember" id="ixv-15065">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242519_ClassMember" id="ixv-15069">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242519_ClassMember" id="ixv-15072">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242519_ClassMember" id="ixv-15076">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242519_ClassMember" id="ixv-15087">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-15145">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242545_ClassMember" id="ixv-15149">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242545_ClassMember" id="ixv-15160">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242545_ClassMember" id="ixv-15163">Fidelity&#xae; Sustainable Target Date 2015 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242545_ClassMember" id="ixv-15167">FSWBX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242545_ClassMember" id="ixv-15186">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242545_ClassMember" id="ixv-15188">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242545_ClassMember" id="ixv-15193">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242545_ClassMember" id="ixv-15195">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242545_ClassMember" id="ixv-15198">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242545_ClassMember" id="ixv-15201">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242545_ClassMember" id="ixv-15208">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242545_ClassMember"
      decimals="0"
      id="ixv-206107"
      unitRef="usd">23</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242545_ClassMember"
      decimals="INF"
      id="ixv-206108"
      unitRef="pure">0.0022</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242545_ClassMember" id="ixv-15250">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242545_ClassMember" id="ixv-15274">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$10,826


$11,382



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242545_LG_ClassMember_3YR" id="ixv-15293">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242545_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206109"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242545_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206110"
      unitRef="usd">10826</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242545_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206111"
      unitRef="usd">11382</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242545_LG_1_AdditionalIndexMember_3YR"
      id="ixv-15310">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242545_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206112"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242545_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206113"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242545_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206114"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242545_LG_2_AdditionalIndexMember_3YR"
      id="ixv-15327">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242545_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206115"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242545_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206116"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242545_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206117"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242545_ClassMember" id="ixv-15369">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.13%

7.09%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242545_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206118"
      unitRef="pure">0.0513</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242545_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206119"
      unitRef="pure">0.0709</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242545_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206120"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242545_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206121"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242545_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206122"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242545_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206123"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242545_ClassMember" id="ixv-15424">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242545_ClassMember" id="ixv-15441">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242545_ClassMember" id="ixv-15445">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242545_ClassMember" id="ixv-15451">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
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      decimals="0"
      id="ixv-206124"
      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242545_InstantMember"
      decimals="INF"
      id="ixv-206125"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      decimals="0"
      id="ixv-206126"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
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      decimals="INF"
      id="ixv-206127"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242545_ClassMember" id="ixv-15526">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-206128"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206129"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206130"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206131"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206132"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242545_ClassMember" id="ixv-15630">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242545_TH_0_Member"
      decimals="INF"
      id="ixv-206133"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_1_Member"
      decimals="INF"
      id="ixv-206134"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_2_Member"
      decimals="INF"
      id="ixv-206135"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_3_Member"
      decimals="INF"
      id="ixv-206136"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_4_Member"
      decimals="INF"
      id="ixv-206137"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_5_Member"
      decimals="INF"
      id="ixv-206138"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_6_Member"
      decimals="INF"
      id="ixv-206139"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_7_Member"
      decimals="INF"
      id="ixv-206140"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242545_TH_8_Member"
      decimals="INF"
      id="ixv-206141"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242545_ClassMember" id="ixv-15745">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242545_ClassMember" id="ixv-15751">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242545_ClassMember" id="ixv-15755">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242545_ClassMember" id="ixv-15758">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242545_ClassMember" id="ixv-15762">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-15828">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242575_ClassMember" id="ixv-15840">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242575_ClassMember" id="ixv-15843">Fidelity Advisor&#xae; Sustainable Target Date 2030 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242575_ClassMember" id="ixv-15847">FSXFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242575_ClassMember" id="ixv-15866">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242575_ClassMember" id="ixv-15868">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242575_ClassMember" id="ixv-15873">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242575_ClassMember" id="ixv-15875">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242575_ClassMember" id="ixv-15878">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242575_ClassMember" id="ixv-15881">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242575_ClassMember" id="ixv-15888">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;37&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.36&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242575_ClassMember"
      decimals="0"
      id="ixv-206142"
      unitRef="usd">37</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242575_ClassMember"
      decimals="INF"
      id="ixv-206143"
      unitRef="pure">0.0036</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242575_ClassMember" id="ixv-15930">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242575_ClassMember" id="ixv-15954">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,280


$11,828



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242575_LG_ClassMember_3YR" id="ixv-15973">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242575_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206144"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242575_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206145"
      unitRef="usd">11280</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242575_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206146"
      unitRef="usd">11828</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242575_LG_1_AdditionalIndexMember_3YR"
      id="ixv-15990">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242575_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206147"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242575_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206148"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242575_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206149"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242575_LG_2_AdditionalIndexMember_3YR"
      id="ixv-16007">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242575_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206150"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242575_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206151"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242575_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206152"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242575_ClassMember" id="ixv-16049">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.85%

9.29%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242575_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206153"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242575_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206154"
      unitRef="pure">0.0929</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242575_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206155"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242575_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206156"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242575_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206157"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242575_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206158"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242575_ClassMember" id="ixv-16104">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242575_ClassMember" id="ixv-16121">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242575_ClassMember" id="ixv-16125">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242575_ClassMember" id="ixv-16131">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242575_InstantMember"
      decimals="0"
      id="ixv-206159"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242575_InstantMember"
      decimals="INF"
      id="ixv-206160"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242575_ClassMember"
      decimals="0"
      id="ixv-206161"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242575_ClassMember"
      decimals="INF"
      id="ixv-206162"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242575_ClassMember" id="ixv-16206">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242575_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206163"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206164"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206165"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206166"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242575_ClassMember" id="ixv-16297">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242575_TH_0_Member"
      decimals="INF"
      id="ixv-206167"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_TH_1_Member"
      decimals="INF"
      id="ixv-206168"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_TH_2_Member"
      decimals="INF"
      id="ixv-206169"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_TH_3_Member"
      decimals="INF"
      id="ixv-206170"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_TH_4_Member"
      decimals="INF"
      id="ixv-206171"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_TH_5_Member"
      decimals="INF"
      id="ixv-206172"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242575_TH_6_Member"
      decimals="INF"
      id="ixv-206173"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-16438">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242561_ClassMember" id="ixv-16450">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242561_ClassMember" id="ixv-16453">Fidelity Advisor&#xae; Sustainable Target Date 2020 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242561_ClassMember" id="ixv-16457">FSWEX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242561_ClassMember" id="ixv-16476">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242561_ClassMember" id="ixv-16478">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242561_ClassMember" id="ixv-16483">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242561_ClassMember" id="ixv-16485">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242561_ClassMember" id="ixv-16488">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242561_ClassMember" id="ixv-16491">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242561_ClassMember" id="ixv-16498">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;70&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.68&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242561_ClassMember"
      decimals="0"
      id="ixv-206174"
      unitRef="usd">70</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242561_ClassMember"
      decimals="INF"
      id="ixv-206175"
      unitRef="pure">0.0068</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242561_ClassMember" id="ixv-16540">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242561_ClassMember" id="ixv-16564">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$10,310


$10,782



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242561_LG_ClassMember_3YR" id="ixv-16585">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242561_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206176"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242561_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206177"
      unitRef="usd">10310</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242561_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206178"
      unitRef="usd">10782</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242561_LG_1_AdditionalIndexMember_3YR"
      id="ixv-16602">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242561_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206179"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242561_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206180"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242561_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206181"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242561_LG_2_AdditionalIndexMember_3YR"
      id="ixv-16619">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242561_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206182"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242561_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206183"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242561_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206184"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242561_ClassMember" id="ixv-16661">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.43%

4.06%


Class A (without 5.75% sales charge)

4.58%

7.38%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_ClassMember_1YR"
      decimals="INF"
      id="ixv-206185"
      unitRef="pure">-0.0143</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206186"
      unitRef="pure">0.0406</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206187"
      unitRef="pure">0.0458</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206188"
      unitRef="pure">0.0738</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206189"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206190"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206191"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242561_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206192"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242561_ClassMember" id="ixv-16728">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242561_ClassMember" id="ixv-16745">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242561_ClassMember" id="ixv-16749">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242561_ClassMember" id="ixv-16755">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242561_InstantMember"
      decimals="0"
      id="ixv-206193"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242561_InstantMember"
      decimals="INF"
      id="ixv-206194"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242561_ClassMember"
      decimals="0"
      id="ixv-206195"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242561_ClassMember"
      decimals="INF"
      id="ixv-206196"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242561_ClassMember" id="ixv-16830">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242561_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206197"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206198"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206199"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206200"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206201"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242561_ClassMember" id="ixv-16934">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242561_TH_0_Member"
      decimals="INF"
      id="ixv-206202"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_1_Member"
      decimals="INF"
      id="ixv-206203"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_2_Member"
      decimals="INF"
      id="ixv-206204"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_3_Member"
      decimals="INF"
      id="ixv-206205"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_4_Member"
      decimals="INF"
      id="ixv-206206"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_5_Member"
      decimals="INF"
      id="ixv-206207"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_6_Member"
      decimals="INF"
      id="ixv-206208"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_7_Member"
      decimals="INF"
      id="ixv-206209"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242561_TH_8_Member"
      decimals="INF"
      id="ixv-206210"
      unitRef="pure">0.001</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-17095">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250746_ClassMember" id="ixv-17107">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250746_ClassMember" id="ixv-17110">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250746_ClassMember" id="ixv-17114">FRCQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250746_ClassMember" id="ixv-17133">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250746_ClassMember" id="ixv-17135">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250746_ClassMember" id="ixv-17140">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250746_ClassMember" id="ixv-17142">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250746_ClassMember" id="ixv-17145">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250746_ClassMember" id="ixv-17148">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250746_ClassMember" id="ixv-17155">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250746_ClassMember"
      decimals="0"
      id="ixv-206211"
      unitRef="usd">38</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250746_ClassMember"
      decimals="INF"
      id="ixv-206212"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250746_ClassMember" id="ixv-17198">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250746_ClassMember" id="ixv-17204">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250746_ClassMember" id="ixv-17228">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000.
Fidelity Sustainable Target Date 2070 Fund


$10,000

$10,280



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250746_LG_ClassMember_2YR" id="ixv-17247">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250746_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206213"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250746_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206214"
      unitRef="usd">10280</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250746_LG_1_AdditionalIndexMember_2YR"
      id="ixv-17260">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250746_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206215"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250746_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206216"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250746_LG_2_AdditionalIndexMember_2YR"
      id="ixv-17274">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250746_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206217"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250746_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206218"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250746_ClassMember" id="ixv-17309">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250746_InstantMember"
      decimals="0"
      id="ixv-206219"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250746_InstantMember"
      decimals="INF"
      id="ixv-206220"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250746_ClassMember"
      decimals="0"
      id="ixv-206221"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250746_ClassMember"
      decimals="INF"
      id="ixv-206222"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250746_ClassMember" id="ixv-17384">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250746_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206223"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206224"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206225"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206226"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250746_ClassMember" id="ixv-17475">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250746_TH_0_Member"
      decimals="INF"
      id="ixv-206227"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_TH_1_Member"
      decimals="INF"
      id="ixv-206228"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_TH_2_Member"
      decimals="INF"
      id="ixv-206229"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_TH_3_Member"
      decimals="INF"
      id="ixv-206230"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_TH_4_Member"
      decimals="INF"
      id="ixv-206231"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250746_TH_5_Member"
      decimals="INF"
      id="ixv-206232"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-17606">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242507_ClassMember" id="ixv-17610">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242507_ClassMember" id="ixv-17621">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242507_ClassMember" id="ixv-17624">Fidelity Advisor&#xae; Sustainable Target Date 2050 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242507_ClassMember" id="ixv-17628">FSYYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242507_ClassMember" id="ixv-17647">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242507_ClassMember" id="ixv-17649">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242507_ClassMember" id="ixv-17654">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242507_ClassMember" id="ixv-17656">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242507_ClassMember" id="ixv-17659">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242507_ClassMember" id="ixv-17662">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242507_ClassMember" id="ixv-17669">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;76&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.74&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242507_ClassMember"
      decimals="0"
      id="ixv-206233"
      unitRef="usd">76</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242507_ClassMember"
      decimals="INF"
      id="ixv-206234"
      unitRef="pure">0.0074</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242507_ClassMember" id="ixv-17711">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242507_ClassMember" id="ixv-17735">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$11,248


$11,765



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242507_LG_ClassMember_3YR" id="ixv-17756">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242507_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206235"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242507_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206236"
      unitRef="usd">11248</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242507_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206237"
      unitRef="usd">11765</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242507_LG_1_AdditionalIndexMember_3YR"
      id="ixv-17773">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242507_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206238"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242507_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206239"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242507_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206240"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242507_LG_2_AdditionalIndexMember_3YR"
      id="ixv-17790">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242507_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206241"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242507_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206242"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242507_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206243"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242507_ClassMember" id="ixv-17832">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.42%

8.98%


Class A (without 5.75% sales charge)

4.60%

12.45%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_ClassMember_1YR"
      decimals="INF"
      id="ixv-206244"
      unitRef="pure">-0.0142</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206245"
      unitRef="pure">0.0898</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206246"
      unitRef="pure">0.0460</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206247"
      unitRef="pure">0.1245</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206248"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206249"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206250"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242507_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206251"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242507_ClassMember" id="ixv-17899">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242507_ClassMember" id="ixv-17916">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242507_ClassMember" id="ixv-17920">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242507_ClassMember" id="ixv-17926">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242507_InstantMember"
      decimals="0"
      id="ixv-206252"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242507_InstantMember"
      decimals="INF"
      id="ixv-206253"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242507_ClassMember"
      decimals="0"
      id="ixv-206254"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242507_ClassMember"
      decimals="INF"
      id="ixv-206255"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242507_ClassMember" id="ixv-18001">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242507_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206256"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206257"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206258"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206259"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242507_ClassMember" id="ixv-18092">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242507_TH_0_Member"
      decimals="INF"
      id="ixv-206260"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_TH_1_Member"
      decimals="INF"
      id="ixv-206261"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_TH_2_Member"
      decimals="INF"
      id="ixv-206262"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_TH_3_Member"
      decimals="INF"
      id="ixv-206263"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_TH_4_Member"
      decimals="INF"
      id="ixv-206264"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242507_TH_5_Member"
      decimals="INF"
      id="ixv-206265"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242507_ClassMember" id="ixv-18177">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242507_ClassMember" id="ixv-18183">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242507_ClassMember" id="ixv-18187">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242507_ClassMember" id="ixv-18190">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242507_ClassMember" id="ixv-18194">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242507_ClassMember" id="ixv-18205">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-18263">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250745_ClassMember" id="ixv-18275">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250745_ClassMember" id="ixv-18278">Fidelity Advisor&#xae; Sustainable Target Date 2070 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250745_ClassMember" id="ixv-18282">FRDEX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250745_ClassMember" id="ixv-18301">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250745_ClassMember" id="ixv-18303">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250745_ClassMember" id="ixv-18308">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250745_ClassMember" id="ixv-18310">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250745_ClassMember" id="ixv-18313">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250745_ClassMember" id="ixv-18316">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250745_ClassMember" id="ixv-18323">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250745_ClassMember"
      decimals="0"
      id="ixv-206266"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250745_ClassMember"
      decimals="INF"
      id="ixv-206267"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250745_ClassMember" id="ixv-18366">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250745_ClassMember" id="ixv-18372">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250745_ClassMember" id="ixv-18396">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$10,282



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250745_LG_ClassMember_2YR" id="ixv-18415">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250745_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206268"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250745_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206269"
      unitRef="usd">10282</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250745_LG_1_AdditionalIndexMember_2YR"
      id="ixv-18428">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250745_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206270"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250745_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206271"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250745_LG_2_AdditionalIndexMember_2YR"
      id="ixv-18442">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250745_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206272"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250745_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206273"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250745_ClassMember" id="ixv-18477">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250745_InstantMember"
      decimals="0"
      id="ixv-206274"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250745_InstantMember"
      decimals="INF"
      id="ixv-206275"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250745_ClassMember"
      decimals="0"
      id="ixv-206276"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250745_ClassMember"
      decimals="INF"
      id="ixv-206277"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250745_ClassMember" id="ixv-18552">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250745_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206278"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206279"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206280"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206281"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250745_ClassMember" id="ixv-18643">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250745_TH_0_Member"
      decimals="INF"
      id="ixv-206282"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_TH_1_Member"
      decimals="INF"
      id="ixv-206283"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_TH_2_Member"
      decimals="INF"
      id="ixv-206284"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_TH_3_Member"
      decimals="INF"
      id="ixv-206285"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_TH_4_Member"
      decimals="INF"
      id="ixv-206286"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250745_TH_5_Member"
      decimals="INF"
      id="ixv-206287"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-18774">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242509_ClassMember" id="ixv-18778">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242509_ClassMember" id="ixv-18789">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242509_ClassMember" id="ixv-18792">Fidelity Advisor&#xae; Sustainable Target Date 2055 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242509_ClassMember" id="ixv-18796">FSZJX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242509_ClassMember" id="ixv-18815">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242509_ClassMember" id="ixv-18817">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242509_ClassMember" id="ixv-18822">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242509_ClassMember" id="ixv-18824">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242509_ClassMember" id="ixv-18827">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242509_ClassMember" id="ixv-18830">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242509_ClassMember" id="ixv-18837">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;76&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.74&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242509_ClassMember"
      decimals="0"
      id="ixv-206288"
      unitRef="usd">76</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242509_ClassMember"
      decimals="INF"
      id="ixv-206289"
      unitRef="pure">0.0074</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242509_ClassMember" id="ixv-18879">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242509_ClassMember" id="ixv-18903">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$11,247


$11,763



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242509_LG_ClassMember_3YR" id="ixv-18924">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242509_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206290"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242509_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206291"
      unitRef="usd">11247</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242509_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206292"
      unitRef="usd">11763</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242509_LG_1_AdditionalIndexMember_3YR"
      id="ixv-18941">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242509_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206293"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242509_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206294"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242509_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206295"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242509_LG_2_AdditionalIndexMember_3YR"
      id="ixv-18958">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242509_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206296"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242509_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206297"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242509_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206298"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242509_ClassMember" id="ixv-19000">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.43%

8.97%


Class A (without 5.75% sales charge)

4.58%

12.43%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_ClassMember_1YR"
      decimals="INF"
      id="ixv-206299"
      unitRef="pure">-0.0143</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206300"
      unitRef="pure">0.0897</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206301"
      unitRef="pure">0.0458</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206302"
      unitRef="pure">0.1243</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206303"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206304"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206305"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242509_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206306"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242509_ClassMember" id="ixv-19067">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242509_ClassMember" id="ixv-19084">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242509_ClassMember" id="ixv-19088">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242509_ClassMember" id="ixv-19094">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242509_InstantMember"
      decimals="0"
      id="ixv-206307"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242509_InstantMember"
      decimals="INF"
      id="ixv-206308"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242509_ClassMember"
      decimals="0"
      id="ixv-206309"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242509_ClassMember"
      decimals="INF"
      id="ixv-206310"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242509_ClassMember" id="ixv-19169">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242509_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206311"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206312"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206313"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206314"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242509_ClassMember" id="ixv-19260">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242509_TH_0_Member"
      decimals="INF"
      id="ixv-206315"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_TH_1_Member"
      decimals="INF"
      id="ixv-206316"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_TH_2_Member"
      decimals="INF"
      id="ixv-206317"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_TH_3_Member"
      decimals="INF"
      id="ixv-206318"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_TH_4_Member"
      decimals="INF"
      id="ixv-206319"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242509_TH_5_Member"
      decimals="INF"
      id="ixv-206320"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242509_ClassMember" id="ixv-19345">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242509_ClassMember" id="ixv-19351">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242509_ClassMember" id="ixv-19355">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242509_ClassMember" id="ixv-19358">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242509_ClassMember" id="ixv-19362">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242509_ClassMember" id="ixv-19373">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-19431">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242590_ClassMember" id="ixv-19435">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242590_ClassMember" id="ixv-19446">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242590_ClassMember" id="ixv-19449">Fidelity&#xae; Sustainable Target Date 2040 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242590_ClassMember" id="ixv-19453">FSYGX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242590_ClassMember" id="ixv-19472">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242590_ClassMember" id="ixv-19474">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242590_ClassMember" id="ixv-19479">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242590_ClassMember" id="ixv-19481">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242590_ClassMember" id="ixv-19484">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242590_ClassMember" id="ixv-19487">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242590_ClassMember" id="ixv-19494">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;29&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242590_ClassMember"
      decimals="0"
      id="ixv-206321"
      unitRef="usd">29</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242590_ClassMember"
      decimals="INF"
      id="ixv-206322"
      unitRef="pure">0.0028</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242590_ClassMember" id="ixv-19536">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242590_ClassMember" id="ixv-19560">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,877


$12,482



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242590_LG_ClassMember_3YR" id="ixv-19579">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242590_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206323"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242590_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206324"
      unitRef="usd">11877</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242590_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206325"
      unitRef="usd">12482</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242590_LG_1_AdditionalIndexMember_3YR"
      id="ixv-19596">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242590_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206326"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242590_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206327"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242590_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206328"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242590_LG_2_AdditionalIndexMember_3YR"
      id="ixv-19613">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242590_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206329"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242590_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206330"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242590_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206331"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242590_ClassMember" id="ixv-19655">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.10%

12.44%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242590_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206332"
      unitRef="pure">0.0510</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242590_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206333"
      unitRef="pure">0.1244</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242590_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206334"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242590_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206335"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242590_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206336"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242590_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206337"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242590_ClassMember" id="ixv-19710">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242590_ClassMember" id="ixv-19727">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242590_ClassMember" id="ixv-19731">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242590_ClassMember" id="ixv-19737">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
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      decimals="0"
      id="ixv-206338"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242590_InstantMember"
      decimals="INF"
      id="ixv-206339"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242590_ClassMember"
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    <us-gaap:InvestmentCompanyPortfolioTurnover
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      id="ixv-206341"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242590_ClassMember" id="ixv-19812">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242590_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206342"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206343"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206344"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206345"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242590_ClassMember" id="ixv-19903">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242590_TH_0_Member"
      decimals="INF"
      id="ixv-206346"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_TH_1_Member"
      decimals="INF"
      id="ixv-206347"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_TH_2_Member"
      decimals="INF"
      id="ixv-206348"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_TH_3_Member"
      decimals="INF"
      id="ixv-206349"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_TH_4_Member"
      decimals="INF"
      id="ixv-206350"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_TH_5_Member"
      decimals="INF"
      id="ixv-206351"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242590_TH_6_Member"
      decimals="INF"
      id="ixv-206352"
      unitRef="pure">0.009</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242590_ClassMember" id="ixv-19998">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242590_ClassMember" id="ixv-20004">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242590_ClassMember" id="ixv-20008">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242590_ClassMember" id="ixv-20011">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242590_ClassMember" id="ixv-20015">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-20081">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242505_ClassMember" id="ixv-20085">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242505_ClassMember" id="ixv-20096">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242505_ClassMember" id="ixv-20099">Fidelity Advisor&#xae; Sustainable Target Date 2050 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242505_ClassMember" id="ixv-20103">FSZBX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242505_ClassMember" id="ixv-20122">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242505_ClassMember" id="ixv-20124">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242505_ClassMember" id="ixv-20129">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242505_ClassMember" id="ixv-20131">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242505_ClassMember" id="ixv-20134">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242505_ClassMember" id="ixv-20137">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242505_ClassMember" id="ixv-20144">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242505_ClassMember"
      decimals="0"
      id="ixv-206353"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242505_ClassMember"
      decimals="INF"
      id="ixv-206354"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242505_ClassMember" id="ixv-20186">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242505_ClassMember" id="ixv-20210">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,962


$12,538



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242505_LG_ClassMember_3YR" id="ixv-20229">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242505_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206355"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242505_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206356"
      unitRef="usd">11962</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242505_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206357"
      unitRef="usd">12538</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242505_LG_1_AdditionalIndexMember_3YR"
      id="ixv-20246">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242505_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206358"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242505_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206359"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242505_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206360"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242505_LG_2_AdditionalIndexMember_3YR"
      id="ixv-20263">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242505_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206361"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242505_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206362"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242505_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206363"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242505_ClassMember" id="ixv-20305">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.82%

12.71%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242505_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206364"
      unitRef="pure">0.0482</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242505_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206365"
      unitRef="pure">0.1271</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242505_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206366"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242505_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206367"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242505_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206368"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242505_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206369"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242505_ClassMember" id="ixv-20360">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242505_ClassMember" id="ixv-20377">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242505_ClassMember" id="ixv-20381">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242505_ClassMember" id="ixv-20387">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242505_InstantMember"
      decimals="0"
      id="ixv-206370"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242505_InstantMember"
      decimals="INF"
      id="ixv-206371"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242505_ClassMember"
      decimals="0"
      id="ixv-206372"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242505_ClassMember"
      decimals="INF"
      id="ixv-206373"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242505_ClassMember" id="ixv-20462">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242505_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206374"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206375"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206376"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206377"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242505_ClassMember" id="ixv-20553">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242505_TH_0_Member"
      decimals="INF"
      id="ixv-206378"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_TH_1_Member"
      decimals="INF"
      id="ixv-206379"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_TH_2_Member"
      decimals="INF"
      id="ixv-206380"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_TH_3_Member"
      decimals="INF"
      id="ixv-206381"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_TH_4_Member"
      decimals="INF"
      id="ixv-206382"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242505_TH_5_Member"
      decimals="INF"
      id="ixv-206383"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242505_ClassMember" id="ixv-20638">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242505_ClassMember" id="ixv-20644">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242505_ClassMember" id="ixv-20648">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242505_ClassMember" id="ixv-20651">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242505_ClassMember" id="ixv-20655">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242505_ClassMember" id="ixv-20666">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-20724">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242586_ClassMember" id="ixv-20736">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242586_ClassMember" id="ixv-20739">Fidelity Advisor&#xae; Sustainable Target Date 2035 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242586_ClassMember" id="ixv-20743">FSXNX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242586_ClassMember" id="ixv-20762">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242586_ClassMember" id="ixv-20764">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242586_ClassMember" id="ixv-20769">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242586_ClassMember" id="ixv-20771">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242586_ClassMember" id="ixv-20774">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242586_ClassMember" id="ixv-20777">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242586_ClassMember" id="ixv-20784">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;150&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.47&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242586_ClassMember"
      decimals="0"
      id="ixv-206384"
      unitRef="usd">150</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242586_ClassMember"
      decimals="INF"
      id="ixv-206385"
      unitRef="pure">0.0147</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242586_ClassMember" id="ixv-20826">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242586_ClassMember" id="ixv-20850">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,451


$11,883



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242586_LG_ClassMember_3YR" id="ixv-20869">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242586_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206386"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242586_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206387"
      unitRef="usd">11451</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242586_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206388"
      unitRef="usd">11883</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242586_LG_1_AdditionalIndexMember_3YR"
      id="ixv-20886">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242586_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206389"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242586_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206390"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242586_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206391"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242586_LG_2_AdditionalIndexMember_3YR"
      id="ixv-20903">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242586_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206392"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242586_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206393"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242586_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206394"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242586_ClassMember" id="ixv-20945">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.77%

9.55%


Class C

3.77%

9.55%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_ClassMember_1YR"
      decimals="INF"
      id="ixv-206395"
      unitRef="pure">0.0277</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206396"
      unitRef="pure">0.0955</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206397"
      unitRef="pure">0.0377</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206398"
      unitRef="pure">0.0955</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206399"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206400"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206401"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242586_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206402"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242586_ClassMember" id="ixv-21012">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242586_ClassMember" id="ixv-21029">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242586_ClassMember" id="ixv-21033">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242586_ClassMember" id="ixv-21039">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242586_InstantMember"
      decimals="0"
      id="ixv-206403"
      unitRef="usd">5343383</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242586_InstantMember"
      decimals="INF"
      id="ixv-206404"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242586_ClassMember"
      decimals="0"
      id="ixv-206405"
      unitRef="usd">17388</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242586_ClassMember"
      decimals="INF"
      id="ixv-206406"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242586_ClassMember" id="ixv-21114">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242586_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206407"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206408"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206409"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206410"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242586_ClassMember" id="ixv-21205">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242586_TH_0_Member"
      decimals="INF"
      id="ixv-206411"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_TH_1_Member"
      decimals="INF"
      id="ixv-206412"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_TH_2_Member"
      decimals="INF"
      id="ixv-206413"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_TH_3_Member"
      decimals="INF"
      id="ixv-206414"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_TH_4_Member"
      decimals="INF"
      id="ixv-206415"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_TH_5_Member"
      decimals="INF"
      id="ixv-206416"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242586_TH_6_Member"
      decimals="INF"
      id="ixv-206417"
      unitRef="pure">0.027</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-21346">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242517_ClassMember" id="ixv-21350">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242517_ClassMember" id="ixv-21361">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242517_ClassMember" id="ixv-21364">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242517_ClassMember" id="ixv-21368">FSZHX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242517_ClassMember" id="ixv-21387">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242517_ClassMember" id="ixv-21389">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242517_ClassMember" id="ixv-21394">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242517_ClassMember" id="ixv-21396">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242517_ClassMember" id="ixv-21399">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242517_ClassMember" id="ixv-21402">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242517_ClassMember" id="ixv-21409">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2055 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242517_ClassMember"
      decimals="0"
      id="ixv-206418"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242517_ClassMember"
      decimals="INF"
      id="ixv-206419"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242517_ClassMember" id="ixv-21451">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242517_ClassMember" id="ixv-21475">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2055 Fund


$10,000

$11,960


$12,539



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242517_LG_ClassMember_3YR" id="ixv-21494">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2055 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242517_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206420"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242517_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206421"
      unitRef="usd">11960</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242517_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206422"
      unitRef="usd">12539</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242517_LG_1_AdditionalIndexMember_3YR"
      id="ixv-21511">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242517_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206423"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242517_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206424"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242517_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206425"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242517_LG_2_AdditionalIndexMember_3YR"
      id="ixv-21528">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242517_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206426"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242517_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206427"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242517_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206428"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242517_ClassMember" id="ixv-21570">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2055 Fund

4.83%

12.71%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242517_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206429"
      unitRef="pure">0.0483</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242517_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206430"
      unitRef="pure">0.1271</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242517_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206431"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242517_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206432"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242517_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206433"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242517_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206434"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242517_ClassMember" id="ixv-21625">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242517_ClassMember" id="ixv-21642">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242517_ClassMember" id="ixv-21646">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242517_ClassMember" id="ixv-21652">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242517_InstantMember"
      decimals="0"
      id="ixv-206435"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242517_InstantMember"
      decimals="INF"
      id="ixv-206436"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242517_ClassMember"
      decimals="0"
      id="ixv-206437"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242517_ClassMember"
      decimals="INF"
      id="ixv-206438"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242517_ClassMember" id="ixv-21727">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242517_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206439"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206440"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206441"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206442"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242517_ClassMember" id="ixv-21818">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242517_TH_0_Member"
      decimals="INF"
      id="ixv-206443"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_TH_1_Member"
      decimals="INF"
      id="ixv-206444"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_TH_2_Member"
      decimals="INF"
      id="ixv-206445"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_TH_3_Member"
      decimals="INF"
      id="ixv-206446"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_TH_4_Member"
      decimals="INF"
      id="ixv-206447"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242517_TH_5_Member"
      decimals="INF"
      id="ixv-206448"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242517_ClassMember" id="ixv-21903">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242517_ClassMember" id="ixv-21909">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242517_ClassMember" id="ixv-21913">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242517_ClassMember" id="ixv-21916">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242517_ClassMember" id="ixv-21920">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242517_ClassMember" id="ixv-21931">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-21989">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242546_ClassMember" id="ixv-22001">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242546_ClassMember" id="ixv-22004">Fidelity&#xae; Sustainable Target Date 2015 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242546_ClassMember" id="ixv-22008">FSVZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242546_ClassMember" id="ixv-22027">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242546_ClassMember" id="ixv-22029">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242546_ClassMember" id="ixv-22034">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242546_ClassMember" id="ixv-22036">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242546_ClassMember" id="ixv-22039">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242546_ClassMember" id="ixv-22042">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242546_ClassMember" id="ixv-22049">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;33&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242546_ClassMember"
      decimals="0"
      id="ixv-206449"
      unitRef="usd">33</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242546_ClassMember"
      decimals="INF"
      id="ixv-206450"
      unitRef="pure">0.0032</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242546_ClassMember" id="ixv-22091">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242546_ClassMember" id="ixv-22115">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$10,809


$11,361



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242546_LG_ClassMember_3YR" id="ixv-22134">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242546_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206451"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242546_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206452"
      unitRef="usd">10809</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242546_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206453"
      unitRef="usd">11361</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242546_LG_1_AdditionalIndexMember_3YR"
      id="ixv-22151">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242546_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206454"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242546_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206455"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242546_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206456"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242546_LG_2_AdditionalIndexMember_3YR"
      id="ixv-22168">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242546_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206457"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242546_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206458"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242546_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206459"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242546_ClassMember" id="ixv-22210">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

5.10%

6.98%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242546_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206460"
      unitRef="pure">0.0510</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242546_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206461"
      unitRef="pure">0.0698</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242546_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206462"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242546_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206463"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242546_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206464"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242546_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206465"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242546_ClassMember" id="ixv-22265">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242546_ClassMember" id="ixv-22282">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242546_ClassMember" id="ixv-22286">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242546_ClassMember" id="ixv-22292">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242546_InstantMember"
      decimals="0"
      id="ixv-206466"
      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242546_InstantMember"
      decimals="INF"
      id="ixv-206467"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242546_ClassMember"
      decimals="0"
      id="ixv-206468"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242546_ClassMember"
      decimals="INF"
      id="ixv-206469"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242546_ClassMember" id="ixv-22367">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242546_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206470"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206471"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206472"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206473"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206474"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242546_ClassMember" id="ixv-22471">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242546_TH_0_Member"
      decimals="INF"
      id="ixv-206475"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_1_Member"
      decimals="INF"
      id="ixv-206476"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_2_Member"
      decimals="INF"
      id="ixv-206477"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_3_Member"
      decimals="INF"
      id="ixv-206478"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_4_Member"
      decimals="INF"
      id="ixv-206479"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_5_Member"
      decimals="INF"
      id="ixv-206480"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_6_Member"
      decimals="INF"
      id="ixv-206481"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_7_Member"
      decimals="INF"
      id="ixv-206482"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242546_TH_8_Member"
      decimals="INF"
      id="ixv-206483"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-22632">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242534_ClassMember" id="ixv-22636">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242534_ClassMember" id="ixv-22647">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242534_ClassMember" id="ixv-22650">Fidelity Advisor&#xae; Sustainable Target Date 2065 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242534_ClassMember" id="ixv-22654">FTGUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242534_ClassMember" id="ixv-22673">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242534_ClassMember" id="ixv-22675">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242534_ClassMember" id="ixv-22680">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242534_ClassMember" id="ixv-22682">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242534_ClassMember" id="ixv-22685">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242534_ClassMember" id="ixv-22688">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242534_ClassMember" id="ixv-22695">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;76&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.75&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242534_ClassMember"
      decimals="0"
      id="ixv-206484"
      unitRef="usd">76</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242534_ClassMember"
      decimals="INF"
      id="ixv-206485"
      unitRef="pure">0.0075</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242534_ClassMember" id="ixv-22737">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242534_ClassMember" id="ixv-22761">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$11,248


$11,759



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242534_LG_ClassMember_3YR" id="ixv-22782">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242534_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206486"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242534_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206487"
      unitRef="usd">11248</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242534_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206488"
      unitRef="usd">11759</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242534_LG_1_AdditionalIndexMember_3YR"
      id="ixv-22799">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242534_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206489"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242534_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206490"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242534_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206491"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242534_LG_2_AdditionalIndexMember_3YR"
      id="ixv-22816">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242534_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206492"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242534_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206493"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242534_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206494"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242534_ClassMember" id="ixv-22858">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.47%

8.95%


Class A (without 5.75% sales charge)

4.54%

12.41%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_ClassMember_1YR"
      decimals="INF"
      id="ixv-206495"
      unitRef="pure">-0.0147</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206496"
      unitRef="pure">0.0895</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206497"
      unitRef="pure">0.0454</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206498"
      unitRef="pure">0.1241</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206499"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206500"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206501"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242534_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206502"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242534_ClassMember" id="ixv-22925">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242534_ClassMember" id="ixv-22942">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242534_ClassMember" id="ixv-22946">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242534_ClassMember" id="ixv-22952">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242534_InstantMember"
      decimals="0"
      id="ixv-206503"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242534_InstantMember"
      decimals="INF"
      id="ixv-206504"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242534_ClassMember"
      decimals="0"
      id="ixv-206505"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242534_ClassMember"
      decimals="INF"
      id="ixv-206506"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242534_ClassMember" id="ixv-23027">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242534_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206507"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206508"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206509"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206510"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242534_ClassMember" id="ixv-23118">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242534_TH_0_Member"
      decimals="INF"
      id="ixv-206511"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_TH_1_Member"
      decimals="INF"
      id="ixv-206512"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_TH_2_Member"
      decimals="INF"
      id="ixv-206513"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_TH_3_Member"
      decimals="INF"
      id="ixv-206514"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_TH_4_Member"
      decimals="INF"
      id="ixv-206515"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242534_TH_5_Member"
      decimals="INF"
      id="ixv-206516"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242534_ClassMember" id="ixv-23203">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242534_ClassMember" id="ixv-23209">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242534_ClassMember" id="ixv-23213">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242534_ClassMember" id="ixv-23216">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242534_ClassMember" id="ixv-23220">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242534_ClassMember" id="ixv-23231">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-23289">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242562_ClassMember" id="ixv-23301">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242562_ClassMember" id="ixv-23304">Fidelity Advisor&#xae; Sustainable Target Date 2020 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242562_ClassMember" id="ixv-23308">FSWJX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242562_ClassMember" id="ixv-23327">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242562_ClassMember" id="ixv-23329">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242562_ClassMember" id="ixv-23334">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242562_ClassMember" id="ixv-23336">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242562_ClassMember" id="ixv-23339">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242562_ClassMember" id="ixv-23342">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242562_ClassMember" id="ixv-23349">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;44&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.43&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242562_ClassMember"
      decimals="0"
      id="ixv-206517"
      unitRef="usd">44</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242562_ClassMember"
      decimals="INF"
      id="ixv-206518"
      unitRef="pure">0.0043</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242562_ClassMember" id="ixv-23391">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242562_ClassMember" id="ixv-23415">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$10,960


$11,491



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242562_LG_ClassMember_3YR" id="ixv-23434">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242562_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206519"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242562_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206520"
      unitRef="usd">10960</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242562_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206521"
      unitRef="usd">11491</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242562_LG_1_AdditionalIndexMember_3YR"
      id="ixv-23451">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242562_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206522"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242562_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206523"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242562_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206524"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242562_LG_2_AdditionalIndexMember_3YR"
      id="ixv-23468">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242562_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206525"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242562_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206526"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242562_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206527"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242562_ClassMember" id="ixv-23510">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.84%

7.63%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242562_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206528"
      unitRef="pure">0.0484</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242562_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206529"
      unitRef="pure">0.0763</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242562_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206530"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242562_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206531"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242562_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206532"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242562_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206533"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242562_ClassMember" id="ixv-23565">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242562_ClassMember" id="ixv-23582">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242562_ClassMember" id="ixv-23586">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242562_ClassMember" id="ixv-23592">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242562_InstantMember"
      decimals="0"
      id="ixv-206534"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242562_InstantMember"
      decimals="INF"
      id="ixv-206535"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242562_ClassMember"
      decimals="0"
      id="ixv-206536"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242562_ClassMember"
      decimals="INF"
      id="ixv-206537"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242562_ClassMember" id="ixv-23667">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242562_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206538"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206539"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206540"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206541"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206542"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242562_ClassMember" id="ixv-23771">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242562_TH_0_Member"
      decimals="INF"
      id="ixv-206543"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_1_Member"
      decimals="INF"
      id="ixv-206544"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_2_Member"
      decimals="INF"
      id="ixv-206545"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_3_Member"
      decimals="INF"
      id="ixv-206546"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_4_Member"
      decimals="INF"
      id="ixv-206547"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_5_Member"
      decimals="INF"
      id="ixv-206548"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_6_Member"
      decimals="INF"
      id="ixv-206549"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_7_Member"
      decimals="INF"
      id="ixv-206550"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242562_TH_8_Member"
      decimals="INF"
      id="ixv-206551"
      unitRef="pure">0.001</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-23932">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242508_ClassMember" id="ixv-23936">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242508_ClassMember" id="ixv-23947">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242508_ClassMember" id="ixv-23950">Fidelity Advisor&#xae; Sustainable Target Date 2050 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242508_ClassMember" id="ixv-23954">FSZAX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242508_ClassMember" id="ixv-23973">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242508_ClassMember" id="ixv-23975">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242508_ClassMember" id="ixv-23980">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242508_ClassMember" id="ixv-23982">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242508_ClassMember" id="ixv-23985">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242508_ClassMember" id="ixv-23988">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242508_ClassMember" id="ixv-23995">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;102&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242508_ClassMember"
      decimals="0"
      id="ixv-206552"
      unitRef="usd">102</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242508_ClassMember"
      decimals="INF"
      id="ixv-206553"
      unitRef="pure">0.0099</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242508_ClassMember" id="ixv-24037">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242508_ClassMember" id="ixv-24061">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$11,490


$11,989



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242508_LG_ClassMember_3YR" id="ixv-24082">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242508_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206554"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242508_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206555"
      unitRef="usd">11490</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242508_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206556"
      unitRef="usd">11989</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242508_LG_1_AdditionalIndexMember_3YR"
      id="ixv-24099">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242508_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206557"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242508_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206558"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242508_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206559"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242508_LG_2_AdditionalIndexMember_3YR"
      id="ixv-24116">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242508_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206560"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242508_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206561"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242508_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206562"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242508_ClassMember" id="ixv-24158">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.70%

10.07%


Class M (without 3.50% sales charge)

4.35%

12.17%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_ClassMember_1YR"
      decimals="INF"
      id="ixv-206563"
      unitRef="pure">0.0070</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206564"
      unitRef="pure">0.1007</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206565"
      unitRef="pure">0.0435</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206566"
      unitRef="pure">0.1217</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206567"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206568"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206569"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242508_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206570"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242508_ClassMember" id="ixv-24224">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242508_ClassMember" id="ixv-24241">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242508_ClassMember" id="ixv-24245">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242508_ClassMember" id="ixv-24251">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242508_InstantMember"
      decimals="0"
      id="ixv-206571"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242508_InstantMember"
      decimals="INF"
      id="ixv-206572"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242508_ClassMember"
      decimals="0"
      id="ixv-206573"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242508_ClassMember"
      decimals="INF"
      id="ixv-206574"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242508_ClassMember" id="ixv-24326">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242508_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206575"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206576"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206577"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206578"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242508_ClassMember" id="ixv-24417">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242508_TH_0_Member"
      decimals="INF"
      id="ixv-206579"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_TH_1_Member"
      decimals="INF"
      id="ixv-206580"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_TH_2_Member"
      decimals="INF"
      id="ixv-206581"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_TH_3_Member"
      decimals="INF"
      id="ixv-206582"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_TH_4_Member"
      decimals="INF"
      id="ixv-206583"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242508_TH_5_Member"
      decimals="INF"
      id="ixv-206584"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242508_ClassMember" id="ixv-24502">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242508_ClassMember" id="ixv-24508">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242508_ClassMember" id="ixv-24512">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242508_ClassMember" id="ixv-24515">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242508_ClassMember" id="ixv-24519">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242508_ClassMember" id="ixv-24530">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-24588">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242595_ClassMember" id="ixv-24600">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242595_ClassMember" id="ixv-24603">Fidelity Advisor&#xae; Sustainable Target Date 2040 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242595_ClassMember" id="ixv-24607">FSXYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242595_ClassMember" id="ixv-24626">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242595_ClassMember" id="ixv-24628">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242595_ClassMember" id="ixv-24633">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242595_ClassMember" id="ixv-24635">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242595_ClassMember" id="ixv-24638">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242595_ClassMember" id="ixv-24641">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242595_ClassMember" id="ixv-24648">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;151&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.48&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242595_ClassMember"
      decimals="0"
      id="ixv-206585"
      unitRef="usd">151</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242595_ClassMember"
      decimals="INF"
      id="ixv-206586"
      unitRef="pure">0.0148</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242595_ClassMember" id="ixv-24690">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242595_ClassMember" id="ixv-24714">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,752


$12,201



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242595_LG_ClassMember_3YR" id="ixv-24733">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242595_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206587"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242595_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206588"
      unitRef="usd">11752</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242595_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206589"
      unitRef="usd">12201</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242595_LG_1_AdditionalIndexMember_3YR"
      id="ixv-24750">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242595_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206590"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242595_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206591"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242595_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206592"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242595_LG_2_AdditionalIndexMember_3YR"
      id="ixv-24767">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242595_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206593"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242595_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206594"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242595_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206595"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242595_ClassMember" id="ixv-24809">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.81%

11.09%


Class C

3.81%

11.09%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_ClassMember_1YR"
      decimals="INF"
      id="ixv-206596"
      unitRef="pure">0.0281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206597"
      unitRef="pure">0.1109</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206598"
      unitRef="pure">0.0381</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206599"
      unitRef="pure">0.1109</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206600"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206601"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206602"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242595_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206603"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242595_ClassMember" id="ixv-24876">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242595_ClassMember" id="ixv-24893">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242595_ClassMember" id="ixv-24897">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242595_ClassMember" id="ixv-24903">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242595_InstantMember"
      decimals="0"
      id="ixv-206604"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242595_InstantMember"
      decimals="INF"
      id="ixv-206605"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242595_ClassMember"
      decimals="0"
      id="ixv-206606"
      unitRef="usd">25445</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242595_ClassMember"
      decimals="INF"
      id="ixv-206607"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242595_ClassMember" id="ixv-24978">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242595_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206608"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206609"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206610"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-206611"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242595_ClassMember" id="ixv-25069">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242595_TH_0_Member"
      decimals="INF"
      id="ixv-206612"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_TH_1_Member"
      decimals="INF"
      id="ixv-206613"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_TH_2_Member"
      decimals="INF"
      id="ixv-206614"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_TH_3_Member"
      decimals="INF"
      id="ixv-206615"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_TH_4_Member"
      decimals="INF"
      id="ixv-206616"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_TH_5_Member"
      decimals="INF"
      id="ixv-206617"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242595_TH_6_Member"
      decimals="INF"
      id="ixv-206618"
      unitRef="pure">0.009</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-25210">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242542_ClassMember" id="ixv-25222">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242542_ClassMember" id="ixv-25225">Fidelity Advisor&#xae; Sustainable Target Date 2010 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242542_ClassMember" id="ixv-25229">FSVCX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242542_ClassMember" id="ixv-25248">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242542_ClassMember" id="ixv-25250">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242542_ClassMember" id="ixv-25255">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242542_ClassMember" id="ixv-25257">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242542_ClassMember" id="ixv-25260">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242542_ClassMember" id="ixv-25263">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242542_ClassMember" id="ixv-25270">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;144&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.41&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242542_ClassMember"
      decimals="0"
      id="ixv-206619"
      unitRef="usd">144</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242542_ClassMember"
      decimals="INF"
      id="ixv-206620"
      unitRef="pure">0.0141</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242542_ClassMember" id="ixv-25312">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242542_ClassMember" id="ixv-25336">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$10,543


$10,966



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242542_LG_ClassMember_3YR" id="ixv-25355">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242542_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206621"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242542_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206622"
      unitRef="usd">10543</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242542_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206623"
      unitRef="usd">10966</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242542_LG_1_AdditionalIndexMember_3YR"
      id="ixv-25372">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242542_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206624"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242542_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206625"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242542_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206626"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242542_LG_2_AdditionalIndexMember_3YR"
      id="ixv-25389">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242542_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206627"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242542_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206628"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242542_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206629"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242542_ClassMember" id="ixv-25431">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

3.01%

5.00%


Class C

4.01%

5.00%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_ClassMember_1YR"
      decimals="INF"
      id="ixv-206630"
      unitRef="pure">0.0301</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206631"
      unitRef="pure">0.0500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206632"
      unitRef="pure">0.0401</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206633"
      unitRef="pure">0.0500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206634"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206635"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206636"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242542_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206637"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242542_ClassMember" id="ixv-25498">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242542_ClassMember" id="ixv-25515">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242542_ClassMember" id="ixv-25519">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242542_ClassMember" id="ixv-25525">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242542_InstantMember"
      decimals="0"
      id="ixv-206638"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242542_InstantMember"
      decimals="INF"
      id="ixv-206639"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242542_ClassMember"
      decimals="0"
      id="ixv-206640"
      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242542_ClassMember"
      decimals="INF"
      id="ixv-206641"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242542_ClassMember" id="ixv-25600">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242542_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206642"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206643"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206644"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206645"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206646"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242542_ClassMember" id="ixv-25704">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242542_TH_0_Member"
      decimals="INF"
      id="ixv-206647"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_1_Member"
      decimals="INF"
      id="ixv-206648"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_2_Member"
      decimals="INF"
      id="ixv-206649"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_3_Member"
      decimals="INF"
      id="ixv-206650"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_4_Member"
      decimals="INF"
      id="ixv-206651"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_5_Member"
      decimals="INF"
      id="ixv-206652"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_6_Member"
      decimals="INF"
      id="ixv-206653"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_7_Member"
      decimals="INF"
      id="ixv-206654"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242542_TH_8_Member"
      decimals="INF"
      id="ixv-206655"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-25865">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242526_ClassMember" id="ixv-25869">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242526_ClassMember" id="ixv-25880">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242526_ClassMember" id="ixv-25883">Fidelity Advisor&#xae; Sustainable Target Date 2060 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242526_ClassMember" id="ixv-25887">FTDLX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242526_ClassMember" id="ixv-25906">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242526_ClassMember" id="ixv-25908">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242526_ClassMember" id="ixv-25913">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242526_ClassMember" id="ixv-25915">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242526_ClassMember" id="ixv-25918">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242526_ClassMember" id="ixv-25921">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242526_ClassMember" id="ixv-25928">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242526_ClassMember"
      decimals="0"
      id="ixv-206656"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242526_ClassMember"
      decimals="INF"
      id="ixv-206657"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242526_ClassMember" id="ixv-25970">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242526_ClassMember" id="ixv-25994">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,971


$12,563



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242526_LG_ClassMember_3YR" id="ixv-26013">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242526_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206658"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242526_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206659"
      unitRef="usd">11971</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242526_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206660"
      unitRef="usd">12563</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242526_LG_1_AdditionalIndexMember_3YR"
      id="ixv-26030">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242526_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206661"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242526_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206662"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242526_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206663"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242526_LG_2_AdditionalIndexMember_3YR"
      id="ixv-26047">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242526_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206664"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242526_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206665"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242526_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206666"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242526_ClassMember" id="ixv-26089">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.94%

12.83%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242526_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206667"
      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242526_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206668"
      unitRef="pure">0.1283</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242526_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206669"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242526_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206670"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242526_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206671"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242526_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206672"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242526_ClassMember" id="ixv-26144">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242526_ClassMember" id="ixv-26161">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242526_ClassMember" id="ixv-26165">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242526_ClassMember" id="ixv-26171">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242526_InstantMember"
      decimals="0"
      id="ixv-206673"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242526_InstantMember"
      decimals="INF"
      id="ixv-206674"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242526_ClassMember"
      decimals="0"
      id="ixv-206675"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242526_ClassMember"
      decimals="INF"
      id="ixv-206676"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242526_ClassMember" id="ixv-26246">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242526_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206677"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206678"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206679"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206680"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242526_ClassMember" id="ixv-26337">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242526_TH_0_Member"
      decimals="INF"
      id="ixv-206681"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_TH_1_Member"
      decimals="INF"
      id="ixv-206682"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_TH_2_Member"
      decimals="INF"
      id="ixv-206683"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_TH_3_Member"
      decimals="INF"
      id="ixv-206684"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_TH_4_Member"
      decimals="INF"
      id="ixv-206685"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242526_TH_5_Member"
      decimals="INF"
      id="ixv-206686"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242526_ClassMember" id="ixv-26422">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242526_ClassMember" id="ixv-26428">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242526_ClassMember" id="ixv-26432">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242526_ClassMember" id="ixv-26435">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242526_ClassMember" id="ixv-26439">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242526_ClassMember" id="ixv-26450">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-26508">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242599_ClassMember" id="ixv-26512">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242599_ClassMember" id="ixv-26523">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242599_ClassMember" id="ixv-26526">Fidelity&#xae; Sustainable Target Date 2045 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242599_ClassMember" id="ixv-26530">FSYVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242599_ClassMember" id="ixv-26549">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242599_ClassMember" id="ixv-26551">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242599_ClassMember" id="ixv-26556">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242599_ClassMember" id="ixv-26558">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242599_ClassMember" id="ixv-26561">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242599_ClassMember" id="ixv-26564">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242599_ClassMember" id="ixv-26571">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.29&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242599_ClassMember"
      decimals="0"
      id="ixv-206687"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242599_ClassMember"
      decimals="INF"
      id="ixv-206688"
      unitRef="pure">0.0029</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242599_ClassMember" id="ixv-26613">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242599_ClassMember" id="ixv-26637">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,977


$12,587



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242599_LG_ClassMember_3YR" id="ixv-26656">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242599_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206689"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242599_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206690"
      unitRef="usd">11977</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242599_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206691"
      unitRef="usd">12587</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242599_LG_1_AdditionalIndexMember_3YR"
      id="ixv-26673">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242599_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206692"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242599_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206693"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242599_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206694"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242599_LG_2_AdditionalIndexMember_3YR"
      id="ixv-26690">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242599_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206695"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242599_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206696"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242599_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206697"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242599_ClassMember" id="ixv-26732">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.09%

12.94%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242599_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206698"
      unitRef="pure">0.0509</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242599_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206699"
      unitRef="pure">0.1294</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242599_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206700"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242599_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206701"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242599_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206702"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242599_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206703"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242599_ClassMember" id="ixv-26787">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242599_ClassMember" id="ixv-26804">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242599_ClassMember" id="ixv-26808">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242599_ClassMember" id="ixv-26814">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242599_InstantMember"
      decimals="0"
      id="ixv-206704"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242599_InstantMember"
      decimals="INF"
      id="ixv-206705"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242599_ClassMember"
      decimals="0"
      id="ixv-206706"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
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      id="ixv-206707"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242599_ClassMember" id="ixv-26889">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242599_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206708"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242599_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206709"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242599_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206710"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-206711"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242599_ClassMember" id="ixv-26980">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242599_TH_0_Member"
      decimals="INF"
      id="ixv-206712"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242599_TH_1_Member"
      decimals="INF"
      id="ixv-206713"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242599_TH_2_Member"
      decimals="INF"
      id="ixv-206714"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242599_TH_3_Member"
      decimals="INF"
      id="ixv-206715"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242599_TH_4_Member"
      decimals="INF"
      id="ixv-206716"
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    <oef:PctOfNav
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      id="ixv-206717"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242599_ClassMember" id="ixv-27065">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242599_ClassMember" id="ixv-27071">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242599_ClassMember" id="ixv-27075">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242599_ClassMember" id="ixv-27078">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242599_ClassMember" id="ixv-27082">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-27148">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242560_ClassMember" id="ixv-27160">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242560_ClassMember" id="ixv-27163">Fidelity Advisor&#xae; Sustainable Target Date 2020 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242560_ClassMember" id="ixv-27167">FSWHX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242560_ClassMember" id="ixv-27186">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242560_ClassMember" id="ixv-27188">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242560_ClassMember" id="ixv-27193">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242560_ClassMember" id="ixv-27195">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242560_ClassMember" id="ixv-27198">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242560_ClassMember" id="ixv-27201">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242560_ClassMember" id="ixv-27208">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;95&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.93&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242560_ClassMember"
      decimals="0"
      id="ixv-206718"
      unitRef="usd">95</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242560_ClassMember"
      decimals="INF"
      id="ixv-206719"
      unitRef="pure">0.0093</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242560_ClassMember" id="ixv-27250">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242560_ClassMember" id="ixv-27274">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$10,533


$10,988



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242560_LG_ClassMember_3YR" id="ixv-27295">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242560_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206720"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242560_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206721"
      unitRef="usd">10533</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242560_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206722"
      unitRef="usd">10988</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242560_LG_1_AdditionalIndexMember_3YR"
      id="ixv-27312">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242560_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206723"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242560_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206724"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242560_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206725"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242560_LG_2_AdditionalIndexMember_3YR"
      id="ixv-27329">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242560_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206726"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242560_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206727"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242560_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206728"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242560_ClassMember" id="ixv-27371">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.67%

5.11%


Class M (without 3.50% sales charge)

4.32%

7.11%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_ClassMember_1YR"
      decimals="INF"
      id="ixv-206729"
      unitRef="pure">0.0067</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206730"
      unitRef="pure">0.0511</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206731"
      unitRef="pure">0.0432</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206732"
      unitRef="pure">0.0711</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206733"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206734"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206735"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242560_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206736"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242560_ClassMember" id="ixv-27437">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242560_ClassMember" id="ixv-27454">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242560_ClassMember" id="ixv-27458">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242560_ClassMember" id="ixv-27464">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242560_InstantMember"
      decimals="0"
      id="ixv-206737"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242560_InstantMember"
      decimals="INF"
      id="ixv-206738"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242560_ClassMember"
      decimals="0"
      id="ixv-206739"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242560_ClassMember"
      decimals="INF"
      id="ixv-206740"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242560_ClassMember" id="ixv-27539">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242560_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206741"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206742"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206743"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206744"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206745"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242560_ClassMember" id="ixv-27643">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242560_TH_0_Member"
      decimals="INF"
      id="ixv-206746"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_1_Member"
      decimals="INF"
      id="ixv-206747"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_2_Member"
      decimals="INF"
      id="ixv-206748"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_3_Member"
      decimals="INF"
      id="ixv-206749"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_4_Member"
      decimals="INF"
      id="ixv-206750"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_5_Member"
      decimals="INF"
      id="ixv-206751"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_6_Member"
      decimals="INF"
      id="ixv-206752"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_7_Member"
      decimals="INF"
      id="ixv-206753"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242560_TH_8_Member"
      decimals="INF"
      id="ixv-206754"
      unitRef="pure">0.001</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-27804">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242499_ClassMember" id="ixv-27816">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242499_ClassMember" id="ixv-27819">Fidelity Advisor&#xae; Sustainable Target Date Income Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242499_ClassMember" id="ixv-27823">FSUJX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242499_ClassMember" id="ixv-27842">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242499_ClassMember" id="ixv-27844">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242499_ClassMember" id="ixv-27849">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242499_ClassMember" id="ixv-27851">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242499_ClassMember" id="ixv-27854">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242499_ClassMember" id="ixv-27857">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242499_ClassMember" id="ixv-27864">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;42&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.41&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242499_ClassMember"
      decimals="0"
      id="ixv-206755"
      unitRef="usd">42</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242499_ClassMember"
      decimals="INF"
      id="ixv-206756"
      unitRef="pure">0.0041</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242499_ClassMember" id="ixv-27906">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242499_ClassMember" id="ixv-27930">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$10,487


$11,022



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242499_LG_ClassMember_3YR" id="ixv-27949">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242499_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206757"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242499_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206758"
      unitRef="usd">10487</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242499_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206759"
      unitRef="usd">11022</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242499_LG_1_AdditionalIndexMember_3YR"
      id="ixv-27966">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242499_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206760"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242499_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206761"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242499_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206762"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242499_LG_2_AdditionalIndexMember_3YR"
      id="ixv-27983">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242499_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206763"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242499_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206764"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242499_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206765"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242499_ClassMember" id="ixv-28025">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

5.10%

5.28%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242499_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206766"
      unitRef="pure">0.0510</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242499_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206767"
      unitRef="pure">0.0528</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242499_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206768"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242499_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206769"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242499_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206770"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242499_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206771"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242499_ClassMember" id="ixv-28080">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242499_ClassMember" id="ixv-28097">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242499_ClassMember" id="ixv-28101">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242499_ClassMember" id="ixv-28107">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242499_InstantMember"
      decimals="0"
      id="ixv-206772"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242499_InstantMember"
      decimals="INF"
      id="ixv-206773"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242499_ClassMember"
      decimals="0"
      id="ixv-206774"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242499_ClassMember"
      decimals="INF"
      id="ixv-206775"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242499_ClassMember" id="ixv-28182">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242499_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206776"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206777"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206778"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206779"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206780"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242499_ClassMember" id="ixv-28286">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242499_TH_0_Member"
      decimals="INF"
      id="ixv-206781"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_1_Member"
      decimals="INF"
      id="ixv-206782"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_2_Member"
      decimals="INF"
      id="ixv-206783"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_3_Member"
      decimals="INF"
      id="ixv-206784"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_4_Member"
      decimals="INF"
      id="ixv-206785"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_5_Member"
      decimals="INF"
      id="ixv-206786"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_6_Member"
      decimals="INF"
      id="ixv-206787"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_7_Member"
      decimals="INF"
      id="ixv-206788"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242499_TH_8_Member"
      decimals="INF"
      id="ixv-206789"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-28447">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242593_ClassMember" id="ixv-28459">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242593_ClassMember" id="ixv-28462">Fidelity Advisor&#xae; Sustainable Target Date 2040 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242593_ClassMember" id="ixv-28466">FSYDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242593_ClassMember" id="ixv-28485">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242593_ClassMember" id="ixv-28487">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242593_ClassMember" id="ixv-28492">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242593_ClassMember" id="ixv-28494">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242593_ClassMember" id="ixv-28497">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242593_ClassMember" id="ixv-28500">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242593_ClassMember" id="ixv-28507">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242593_ClassMember"
      decimals="0"
      id="ixv-206790"
      unitRef="usd">39</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242593_ClassMember"
      decimals="INF"
      id="ixv-206791"
      unitRef="pure">0.0038</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242593_ClassMember" id="ixv-28549">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242593_ClassMember" id="ixv-28573">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,869


$12,466



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242593_LG_ClassMember_3YR" id="ixv-28592">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242593_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206792"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242593_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206793"
      unitRef="usd">11869</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242593_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206794"
      unitRef="usd">12466</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242593_LG_1_AdditionalIndexMember_3YR"
      id="ixv-28609">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242593_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206795"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242593_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206796"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242593_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206797"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242593_LG_2_AdditionalIndexMember_3YR"
      id="ixv-28626">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242593_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206798"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242593_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206799"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242593_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206800"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242593_ClassMember" id="ixv-28668">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

5.03%

12.37%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242593_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206801"
      unitRef="pure">0.0503</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242593_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206802"
      unitRef="pure">0.1237</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242593_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206803"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242593_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206804"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242593_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206805"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242593_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206806"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242593_ClassMember" id="ixv-28723">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242593_ClassMember" id="ixv-28740">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242593_ClassMember" id="ixv-28744">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242593_ClassMember" id="ixv-28750">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242593_InstantMember"
      decimals="0"
      id="ixv-206807"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242593_InstantMember"
      decimals="INF"
      id="ixv-206808"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242593_ClassMember"
      decimals="0"
      id="ixv-206809"
      unitRef="usd">25445</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242593_ClassMember"
      decimals="INF"
      id="ixv-206810"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242593_ClassMember" id="ixv-28825">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242593_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206811"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206812"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206813"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206814"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242593_ClassMember" id="ixv-28916">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242593_TH_0_Member"
      decimals="INF"
      id="ixv-206815"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_TH_1_Member"
      decimals="INF"
      id="ixv-206816"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_TH_2_Member"
      decimals="INF"
      id="ixv-206817"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_TH_3_Member"
      decimals="INF"
      id="ixv-206818"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_TH_4_Member"
      decimals="INF"
      id="ixv-206819"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_TH_5_Member"
      decimals="INF"
      id="ixv-206820"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242593_TH_6_Member"
      decimals="INF"
      id="ixv-206821"
      unitRef="pure">0.009</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-29057">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242501_ClassMember" id="ixv-29061">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242501_ClassMember" id="ixv-29072">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242501_ClassMember" id="ixv-29075">Fidelity&#xae; Sustainable Target Date 2050 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242501_ClassMember" id="ixv-29079">FSZGX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242501_ClassMember" id="ixv-29098">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242501_ClassMember" id="ixv-29100">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242501_ClassMember" id="ixv-29105">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242501_ClassMember" id="ixv-29107">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242501_ClassMember" id="ixv-29110">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242501_ClassMember" id="ixv-29113">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242501_ClassMember" id="ixv-29120">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.29&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242501_ClassMember"
      decimals="0"
      id="ixv-206822"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242501_ClassMember"
      decimals="INF"
      id="ixv-206823"
      unitRef="pure">0.0029</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242501_ClassMember" id="ixv-29162">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242501_ClassMember" id="ixv-29186">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,976


$12,588



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242501_LG_ClassMember_3YR" id="ixv-29205">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242501_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206824"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242501_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206825"
      unitRef="usd">11976</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242501_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206826"
      unitRef="usd">12588</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242501_LG_1_AdditionalIndexMember_3YR"
      id="ixv-29222">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242501_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206827"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242501_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206828"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242501_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206829"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242501_LG_2_AdditionalIndexMember_3YR"
      id="ixv-29239">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242501_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206830"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242501_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206831"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242501_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206832"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242501_ClassMember" id="ixv-29281">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.11%

12.95%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242501_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206833"
      unitRef="pure">0.0511</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242501_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206834"
      unitRef="pure">0.1295</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242501_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206835"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242501_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206836"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242501_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206837"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242501_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206838"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242501_ClassMember" id="ixv-29336">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242501_ClassMember" id="ixv-29353">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242501_ClassMember" id="ixv-29357">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242501_ClassMember" id="ixv-29363">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242501_InstantMember"
      decimals="0"
      id="ixv-206839"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242501_InstantMember"
      decimals="INF"
      id="ixv-206840"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242501_ClassMember"
      decimals="0"
      id="ixv-206841"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242501_ClassMember"
      decimals="INF"
      id="ixv-206842"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242501_ClassMember" id="ixv-29438">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242501_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206843"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206844"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206845"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206846"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242501_ClassMember" id="ixv-29529">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242501_TH_0_Member"
      decimals="INF"
      id="ixv-206847"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_TH_1_Member"
      decimals="INF"
      id="ixv-206848"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_TH_2_Member"
      decimals="INF"
      id="ixv-206849"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_TH_3_Member"
      decimals="INF"
      id="ixv-206850"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_TH_4_Member"
      decimals="INF"
      id="ixv-206851"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242501_TH_5_Member"
      decimals="INF"
      id="ixv-206852"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242501_ClassMember" id="ixv-29614">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242501_ClassMember" id="ixv-29620">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242501_ClassMember" id="ixv-29624">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242501_ClassMember" id="ixv-29627">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242501_ClassMember" id="ixv-29631">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242501_ClassMember" id="ixv-29646">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-29702">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242504_ClassMember" id="ixv-29706">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242504_ClassMember" id="ixv-29717">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242504_ClassMember" id="ixv-29720">Fidelity Advisor&#xae; Sustainable Target Date 2050 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242504_ClassMember" id="ixv-29724">FSZCX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242504_ClassMember" id="ixv-29743">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242504_ClassMember" id="ixv-29745">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242504_ClassMember" id="ixv-29750">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242504_ClassMember" id="ixv-29752">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242504_ClassMember" id="ixv-29755">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242504_ClassMember" id="ixv-29758">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242504_ClassMember" id="ixv-29765">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242504_ClassMember"
      decimals="0"
      id="ixv-206853"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242504_ClassMember"
      decimals="INF"
      id="ixv-206854"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242504_ClassMember" id="ixv-29807">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242504_ClassMember" id="ixv-29831">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,969


$12,562



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242504_LG_ClassMember_3YR" id="ixv-29850">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242504_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206855"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242504_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206856"
      unitRef="usd">11969</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242504_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206857"
      unitRef="usd">12562</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242504_LG_1_AdditionalIndexMember_3YR"
      id="ixv-29867">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242504_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206858"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242504_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206859"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242504_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206860"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242504_LG_2_AdditionalIndexMember_3YR"
      id="ixv-29884">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242504_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206861"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242504_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206862"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242504_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206863"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242504_ClassMember" id="ixv-29926">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.96%

12.83%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242504_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206864"
      unitRef="pure">0.0496</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242504_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206865"
      unitRef="pure">0.1283</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242504_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206866"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242504_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206867"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242504_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206868"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242504_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206869"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242504_ClassMember" id="ixv-29981">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242504_ClassMember" id="ixv-29998">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242504_ClassMember" id="ixv-30002">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242504_ClassMember" id="ixv-30008">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242504_InstantMember"
      decimals="0"
      id="ixv-206870"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242504_InstantMember"
      decimals="INF"
      id="ixv-206871"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242504_ClassMember"
      decimals="0"
      id="ixv-206872"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242504_ClassMember"
      decimals="INF"
      id="ixv-206873"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242504_ClassMember" id="ixv-30083">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242504_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206874"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206875"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206876"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206877"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242504_ClassMember" id="ixv-30174">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242504_TH_0_Member"
      decimals="INF"
      id="ixv-206878"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_TH_1_Member"
      decimals="INF"
      id="ixv-206879"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_TH_2_Member"
      decimals="INF"
      id="ixv-206880"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_TH_3_Member"
      decimals="INF"
      id="ixv-206881"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_TH_4_Member"
      decimals="INF"
      id="ixv-206882"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242504_TH_5_Member"
      decimals="INF"
      id="ixv-206883"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242504_ClassMember" id="ixv-30259">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242504_ClassMember" id="ixv-30265">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242504_ClassMember" id="ixv-30269">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242504_ClassMember" id="ixv-30272">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242504_ClassMember" id="ixv-30276">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242504_ClassMember" id="ixv-30287">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-30345">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242500_ClassMember" id="ixv-30349">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242500_ClassMember" id="ixv-30360">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242500_ClassMember" id="ixv-30363">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242500_ClassMember" id="ixv-30367">FSYWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242500_ClassMember" id="ixv-30386">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242500_ClassMember" id="ixv-30388">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242500_ClassMember" id="ixv-30393">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242500_ClassMember" id="ixv-30395">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242500_ClassMember" id="ixv-30398">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242500_ClassMember" id="ixv-30401">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242500_ClassMember" id="ixv-30408">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2050 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;51&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242500_ClassMember"
      decimals="0"
      id="ixv-206884"
      unitRef="usd">51</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242500_ClassMember"
      decimals="INF"
      id="ixv-206885"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242500_ClassMember" id="ixv-30450">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242500_ClassMember" id="ixv-30474">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2050 Fund


$10,000

$11,951


$12,537



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242500_LG_ClassMember_3YR" id="ixv-30493">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2050 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242500_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206886"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242500_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206887"
      unitRef="usd">11951</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242500_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206888"
      unitRef="usd">12537</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242500_LG_1_AdditionalIndexMember_3YR"
      id="ixv-30510">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242500_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206889"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242500_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206890"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242500_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206891"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242500_LG_2_AdditionalIndexMember_3YR"
      id="ixv-30527">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242500_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206892"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242500_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206893"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242500_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206894"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242500_ClassMember" id="ixv-30569">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2050 Fund

4.90%

12.71%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242500_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206895"
      unitRef="pure">0.0490</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242500_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206896"
      unitRef="pure">0.1271</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242500_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206897"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242500_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206898"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242500_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206899"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242500_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206900"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242500_ClassMember" id="ixv-30624">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242500_ClassMember" id="ixv-30641">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242500_ClassMember" id="ixv-30645">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242500_ClassMember" id="ixv-30651">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242500_InstantMember"
      decimals="0"
      id="ixv-206901"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242500_InstantMember"
      decimals="INF"
      id="ixv-206902"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242500_ClassMember"
      decimals="0"
      id="ixv-206903"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242500_ClassMember"
      decimals="INF"
      id="ixv-206904"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242500_ClassMember" id="ixv-30726">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242500_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206905"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206906"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206907"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206908"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242500_ClassMember" id="ixv-30817">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242500_TH_0_Member"
      decimals="INF"
      id="ixv-206909"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_TH_1_Member"
      decimals="INF"
      id="ixv-206910"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_TH_2_Member"
      decimals="INF"
      id="ixv-206911"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_TH_3_Member"
      decimals="INF"
      id="ixv-206912"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_TH_4_Member"
      decimals="INF"
      id="ixv-206913"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242500_TH_5_Member"
      decimals="INF"
      id="ixv-206914"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242500_ClassMember" id="ixv-30902">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242500_ClassMember" id="ixv-30908">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242500_ClassMember" id="ixv-30912">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242500_ClassMember" id="ixv-30915">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242500_ClassMember" id="ixv-30919">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242500_ClassMember" id="ixv-30930">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-30988">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242540_ClassMember" id="ixv-31000">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242540_ClassMember" id="ixv-31003">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242540_ClassMember" id="ixv-31007">FSUYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242540_ClassMember" id="ixv-31026">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242540_ClassMember" id="ixv-31028">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242540_ClassMember" id="ixv-31033">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242540_ClassMember" id="ixv-31035">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242540_ClassMember" id="ixv-31038">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242540_ClassMember" id="ixv-31041">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242540_ClassMember" id="ixv-31048">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2010 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;42&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.41&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242540_ClassMember"
      decimals="0"
      id="ixv-206915"
      unitRef="usd">42</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242540_ClassMember"
      decimals="INF"
      id="ixv-206916"
      unitRef="pure">0.0041</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242540_ClassMember" id="ixv-31090">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242540_ClassMember" id="ixv-31114">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2010 Fund


$10,000

$10,639


$11,176



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242540_LG_ClassMember_3YR" id="ixv-31133">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2010 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242540_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206917"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242540_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206918"
      unitRef="usd">10639</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242540_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206919"
      unitRef="usd">11176</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242540_LG_1_AdditionalIndexMember_3YR"
      id="ixv-31150">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242540_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206920"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242540_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206921"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242540_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206922"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242540_LG_2_AdditionalIndexMember_3YR"
      id="ixv-31167">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242540_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206923"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242540_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206924"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242540_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206925"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242540_ClassMember" id="ixv-31209">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2010 Fund

5.05%

6.06%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242540_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206926"
      unitRef="pure">0.0505</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242540_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206927"
      unitRef="pure">0.0606</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242540_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206928"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242540_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206929"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242540_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206930"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242540_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206931"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242540_ClassMember" id="ixv-31264">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242540_ClassMember" id="ixv-31281">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242540_ClassMember" id="ixv-31285">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242540_ClassMember" id="ixv-31291">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242540_InstantMember"
      decimals="0"
      id="ixv-206932"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242540_InstantMember"
      decimals="INF"
      id="ixv-206933"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242540_ClassMember"
      decimals="0"
      id="ixv-206934"
      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242540_ClassMember"
      decimals="INF"
      id="ixv-206935"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242540_ClassMember" id="ixv-31366">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242540_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206936"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206937"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206938"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-206939"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206940"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242540_ClassMember" id="ixv-31470">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242540_TH_0_Member"
      decimals="INF"
      id="ixv-206941"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_1_Member"
      decimals="INF"
      id="ixv-206942"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_2_Member"
      decimals="INF"
      id="ixv-206943"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_3_Member"
      decimals="INF"
      id="ixv-206944"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_4_Member"
      decimals="INF"
      id="ixv-206945"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_5_Member"
      decimals="INF"
      id="ixv-206946"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_6_Member"
      decimals="INF"
      id="ixv-206947"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_7_Member"
      decimals="INF"
      id="ixv-206948"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242540_TH_8_Member"
      decimals="INF"
      id="ixv-206949"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-31631">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242607_ClassMember" id="ixv-31643">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242607_ClassMember" id="ixv-31646">Fidelity Advisor&#xae; Sustainable Target Date 2045 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242607_ClassMember" id="ixv-31650">FSYQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242607_ClassMember" id="ixv-31669">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242607_ClassMember" id="ixv-31671">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242607_ClassMember" id="ixv-31676">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242607_ClassMember" id="ixv-31678">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242607_ClassMember" id="ixv-31681">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242607_ClassMember" id="ixv-31684">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242607_ClassMember" id="ixv-31691">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242607_ClassMember"
      decimals="0"
      id="ixv-206950"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242607_ClassMember"
      decimals="INF"
      id="ixv-206951"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242607_ClassMember" id="ixv-31733">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242607_ClassMember" id="ixv-31757">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,963


$12,544



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242607_LG_ClassMember_3YR" id="ixv-31776">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242607_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206952"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242607_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206953"
      unitRef="usd">11963</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242607_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206954"
      unitRef="usd">12544</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242607_LG_1_AdditionalIndexMember_3YR"
      id="ixv-31793">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242607_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206955"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242607_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206956"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242607_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206957"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242607_LG_2_AdditionalIndexMember_3YR"
      id="ixv-31810">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242607_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206958"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242607_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206959"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242607_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206960"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242607_ClassMember" id="ixv-31852">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.85%

12.74%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242607_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206961"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242607_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206962"
      unitRef="pure">0.1274</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242607_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206963"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242607_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206964"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242607_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206965"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242607_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206966"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242607_ClassMember" id="ixv-31907">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242607_ClassMember" id="ixv-31924">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242607_ClassMember" id="ixv-31928">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242607_ClassMember" id="ixv-31934">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242607_InstantMember"
      decimals="0"
      id="ixv-206967"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242607_InstantMember"
      decimals="INF"
      id="ixv-206968"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242607_ClassMember"
      decimals="0"
      id="ixv-206969"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242607_ClassMember"
      decimals="INF"
      id="ixv-206970"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242607_ClassMember" id="ixv-32009">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242607_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-206971"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-206972"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-206973"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-206974"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242607_ClassMember" id="ixv-32100">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242607_TH_0_Member"
      decimals="INF"
      id="ixv-206975"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_TH_1_Member"
      decimals="INF"
      id="ixv-206976"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_TH_2_Member"
      decimals="INF"
      id="ixv-206977"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_TH_3_Member"
      decimals="INF"
      id="ixv-206978"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_TH_4_Member"
      decimals="INF"
      id="ixv-206979"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242607_TH_5_Member"
      decimals="INF"
      id="ixv-206980"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-32231">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242522_ClassMember" id="ixv-32235">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242522_ClassMember" id="ixv-32246">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242522_ClassMember" id="ixv-32249">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242522_ClassMember" id="ixv-32253">FSZSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242522_ClassMember" id="ixv-32272">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242522_ClassMember" id="ixv-32274">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242522_ClassMember" id="ixv-32279">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242522_ClassMember" id="ixv-32281">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242522_ClassMember" id="ixv-32284">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242522_ClassMember" id="ixv-32287">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242522_ClassMember" id="ixv-32294">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2060 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242522_ClassMember"
      decimals="0"
      id="ixv-206981"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242522_ClassMember"
      decimals="INF"
      id="ixv-206982"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242522_ClassMember" id="ixv-32336">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242522_ClassMember" id="ixv-32360">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2060 Fund


$10,000

$11,964


$12,538



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242522_LG_ClassMember_3YR" id="ixv-32379">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2060 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242522_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-206983"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242522_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-206984"
      unitRef="usd">11964</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242522_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-206985"
      unitRef="usd">12538</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242522_LG_1_AdditionalIndexMember_3YR"
      id="ixv-32396">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242522_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206986"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242522_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206987"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242522_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206988"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242522_LG_2_AdditionalIndexMember_3YR"
      id="ixv-32413">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242522_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-206989"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242522_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-206990"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242522_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-206991"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242522_ClassMember" id="ixv-32455">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2060 Fund

4.80%

12.71%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242522_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-206992"
      unitRef="pure">0.0480</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242522_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-206993"
      unitRef="pure">0.1271</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242522_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-206994"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242522_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-206995"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242522_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-206996"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242522_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-206997"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242522_ClassMember" id="ixv-32510">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242522_ClassMember" id="ixv-32527">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242522_ClassMember" id="ixv-32531">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242522_ClassMember" id="ixv-32537">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242522_InstantMember"
      decimals="0"
      id="ixv-206998"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242522_InstantMember"
      decimals="INF"
      id="ixv-206999"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242522_ClassMember"
      decimals="0"
      id="ixv-207000"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242522_ClassMember"
      decimals="INF"
      id="ixv-207001"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242522_ClassMember" id="ixv-32612">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242522_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207002"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207003"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207004"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207005"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242522_ClassMember" id="ixv-32703">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242522_TH_0_Member"
      decimals="INF"
      id="ixv-207006"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_TH_1_Member"
      decimals="INF"
      id="ixv-207007"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_TH_2_Member"
      decimals="INF"
      id="ixv-207008"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_TH_3_Member"
      decimals="INF"
      id="ixv-207009"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_TH_4_Member"
      decimals="INF"
      id="ixv-207010"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242522_TH_5_Member"
      decimals="INF"
      id="ixv-207011"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242522_ClassMember" id="ixv-32788">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242522_ClassMember" id="ixv-32794">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242522_ClassMember" id="ixv-32798">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242522_ClassMember" id="ixv-32801">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242522_ClassMember" id="ixv-32805">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242522_ClassMember" id="ixv-32816">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-32874">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242579_ClassMember" id="ixv-32886">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242579_ClassMember" id="ixv-32889">Fidelity Advisor&#xae; Sustainable Target Date 2030 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242579_ClassMember" id="ixv-32893">FSXBX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242579_ClassMember" id="ixv-32912">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242579_ClassMember" id="ixv-32914">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242579_ClassMember" id="ixv-32919">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242579_ClassMember" id="ixv-32921">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242579_ClassMember" id="ixv-32924">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242579_ClassMember" id="ixv-32927">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242579_ClassMember" id="ixv-32934">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;73&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.71&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242579_ClassMember"
      decimals="0"
      id="ixv-207012"
      unitRef="usd">73</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242579_ClassMember"
      decimals="INF"
      id="ixv-207013"
      unitRef="pure">0.0071</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242579_ClassMember" id="ixv-32976">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242579_ClassMember" id="ixv-33000">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$10,603


$11,073



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242579_LG_ClassMember_3YR" id="ixv-33021">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242579_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207014"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242579_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207015"
      unitRef="usd">10603</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242579_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207016"
      unitRef="usd">11073</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242579_LG_1_AdditionalIndexMember_3YR"
      id="ixv-33038">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242579_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207017"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242579_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207018"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242579_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207019"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242579_LG_2_AdditionalIndexMember_3YR"
      id="ixv-33055">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242579_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207020"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242579_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207021"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242579_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207022"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242579_ClassMember" id="ixv-33097">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.57%

5.54%


Class A (without 5.75% sales charge)

4.43%

8.90%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_ClassMember_1YR"
      decimals="INF"
      id="ixv-207023"
      unitRef="pure">-0.0157</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207024"
      unitRef="pure">0.0554</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207025"
      unitRef="pure">0.0443</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207026"
      unitRef="pure">0.0890</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207027"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207028"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207029"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242579_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207030"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242579_ClassMember" id="ixv-33164">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242579_ClassMember" id="ixv-33181">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242579_ClassMember" id="ixv-33185">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242579_ClassMember" id="ixv-33191">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242579_InstantMember"
      decimals="0"
      id="ixv-207031"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242579_InstantMember"
      decimals="INF"
      id="ixv-207032"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242579_ClassMember"
      decimals="0"
      id="ixv-207033"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242579_ClassMember"
      decimals="INF"
      id="ixv-207034"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242579_ClassMember" id="ixv-33266">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242579_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207035"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207036"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207037"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207038"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242579_ClassMember" id="ixv-33357">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242579_TH_0_Member"
      decimals="INF"
      id="ixv-207039"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_TH_1_Member"
      decimals="INF"
      id="ixv-207040"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_TH_2_Member"
      decimals="INF"
      id="ixv-207041"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_TH_3_Member"
      decimals="INF"
      id="ixv-207042"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_TH_4_Member"
      decimals="INF"
      id="ixv-207043"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_TH_5_Member"
      decimals="INF"
      id="ixv-207044"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242579_TH_6_Member"
      decimals="INF"
      id="ixv-207045"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-33498">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242527_ClassMember" id="ixv-33502">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242527_ClassMember" id="ixv-33513">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242527_ClassMember" id="ixv-33516">Fidelity&#xae; Sustainable Target Date 2065 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242527_ClassMember" id="ixv-33520">FTHHX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242527_ClassMember" id="ixv-33539">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242527_ClassMember" id="ixv-33541">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242527_ClassMember" id="ixv-33546">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242527_ClassMember" id="ixv-33548">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242527_ClassMember" id="ixv-33551">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242527_ClassMember" id="ixv-33554">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242527_ClassMember" id="ixv-33561">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.29&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242527_ClassMember"
      decimals="0"
      id="ixv-207046"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242527_ClassMember"
      decimals="INF"
      id="ixv-207047"
      unitRef="pure">0.0029</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242527_ClassMember" id="ixv-33603">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242527_ClassMember" id="ixv-33627">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,977


$12,583



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242527_LG_ClassMember_3YR" id="ixv-33646">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242527_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207048"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242527_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207049"
      unitRef="usd">11977</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242527_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207050"
      unitRef="usd">12583</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242527_LG_1_AdditionalIndexMember_3YR"
      id="ixv-33663">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242527_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207051"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242527_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207052"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242527_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207053"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242527_LG_2_AdditionalIndexMember_3YR"
      id="ixv-33680">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242527_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207054"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242527_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207055"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242527_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207056"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242527_ClassMember" id="ixv-33722">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.06%

12.92%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242527_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207057"
      unitRef="pure">0.0506</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242527_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207058"
      unitRef="pure">0.1292</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242527_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207059"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242527_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207060"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242527_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207061"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242527_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207062"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242527_ClassMember" id="ixv-33777">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242527_ClassMember" id="ixv-33794">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242527_ClassMember" id="ixv-33798">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242527_ClassMember" id="ixv-33804">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242527_InstantMember"
      decimals="0"
      id="ixv-207063"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242527_InstantMember"
      decimals="INF"
      id="ixv-207064"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242527_ClassMember"
      decimals="0"
      id="ixv-207065"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242527_ClassMember"
      decimals="INF"
      id="ixv-207066"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242527_ClassMember" id="ixv-33879">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242527_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207067"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207068"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207069"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207070"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242527_ClassMember" id="ixv-33970">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242527_TH_0_Member"
      decimals="INF"
      id="ixv-207071"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_TH_1_Member"
      decimals="INF"
      id="ixv-207072"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_TH_2_Member"
      decimals="INF"
      id="ixv-207073"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_TH_3_Member"
      decimals="INF"
      id="ixv-207074"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_TH_4_Member"
      decimals="INF"
      id="ixv-207075"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242527_TH_5_Member"
      decimals="INF"
      id="ixv-207076"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242527_ClassMember" id="ixv-34055">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242527_ClassMember" id="ixv-34061">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242527_ClassMember" id="ixv-34065">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242527_ClassMember" id="ixv-34068">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242527_ClassMember" id="ixv-34072">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242527_ClassMember" id="ixv-34087">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-34143">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242551_ClassMember" id="ixv-34155">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242551_ClassMember" id="ixv-34158">Fidelity Advisor&#xae; Sustainable Target Date 2015 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242551_ClassMember" id="ixv-34162">FSVTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242551_ClassMember" id="ixv-34181">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242551_ClassMember" id="ixv-34183">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242551_ClassMember" id="ixv-34188">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242551_ClassMember" id="ixv-34190">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242551_ClassMember" id="ixv-34193">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242551_ClassMember" id="ixv-34196">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242551_ClassMember" id="ixv-34203">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;94&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.92&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242551_ClassMember"
      decimals="0"
      id="ixv-207077"
      unitRef="usd">94</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242551_ClassMember"
      decimals="INF"
      id="ixv-207078"
      unitRef="pure">0.0092</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242551_ClassMember" id="ixv-34245">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242551_ClassMember" id="ixv-34269">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$10,383


$10,840



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242551_LG_ClassMember_3YR" id="ixv-34290">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242551_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207079"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242551_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207080"
      unitRef="usd">10383</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242551_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207081"
      unitRef="usd">10840</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242551_LG_1_AdditionalIndexMember_3YR"
      id="ixv-34307">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242551_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207082"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242551_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207083"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242551_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207084"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242551_LG_2_AdditionalIndexMember_3YR"
      id="ixv-34324">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242551_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207085"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242551_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207086"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242551_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207087"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242551_ClassMember" id="ixv-34366">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.74%

4.36%


Class M (without 3.50% sales charge)

4.40%

6.34%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_ClassMember_1YR"
      decimals="INF"
      id="ixv-207088"
      unitRef="pure">0.0074</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207089"
      unitRef="pure">0.0436</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207090"
      unitRef="pure">0.0440</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207091"
      unitRef="pure">0.0634</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207092"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207093"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207094"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242551_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207095"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242551_ClassMember" id="ixv-34432">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242551_ClassMember" id="ixv-34449">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242551_ClassMember" id="ixv-34453">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242551_ClassMember" id="ixv-34459">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242551_InstantMember"
      decimals="0"
      id="ixv-207096"
      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242551_InstantMember"
      decimals="INF"
      id="ixv-207097"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242551_ClassMember"
      decimals="0"
      id="ixv-207098"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242551_ClassMember"
      decimals="INF"
      id="ixv-207099"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242551_ClassMember" id="ixv-34534">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242551_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207100"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207101"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207102"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207103"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207104"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242551_ClassMember" id="ixv-34638">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242551_TH_0_Member"
      decimals="INF"
      id="ixv-207105"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_1_Member"
      decimals="INF"
      id="ixv-207106"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_2_Member"
      decimals="INF"
      id="ixv-207107"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_3_Member"
      decimals="INF"
      id="ixv-207108"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_4_Member"
      decimals="INF"
      id="ixv-207109"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_5_Member"
      decimals="INF"
      id="ixv-207110"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_6_Member"
      decimals="INF"
      id="ixv-207111"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_7_Member"
      decimals="INF"
      id="ixv-207112"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242551_TH_8_Member"
      decimals="INF"
      id="ixv-207113"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-34799">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242525_ClassMember" id="ixv-34803">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242525_ClassMember" id="ixv-34814">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242525_ClassMember" id="ixv-34817">Fidelity&#xae; Sustainable Target Date 2060 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242525_ClassMember" id="ixv-34821">FTGNX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242525_ClassMember" id="ixv-34840">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242525_ClassMember" id="ixv-34842">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242525_ClassMember" id="ixv-34847">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242525_ClassMember" id="ixv-34849">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242525_ClassMember" id="ixv-34852">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242525_ClassMember" id="ixv-34855">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242525_ClassMember" id="ixv-34862">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.29&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242525_ClassMember"
      decimals="0"
      id="ixv-207114"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242525_ClassMember"
      decimals="INF"
      id="ixv-207115"
      unitRef="pure">0.0029</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242525_ClassMember" id="ixv-34904">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242525_ClassMember" id="ixv-34928">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,978


$12,588



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242525_LG_ClassMember_3YR" id="ixv-34947">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242525_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207116"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242525_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207117"
      unitRef="usd">11978</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242525_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207118"
      unitRef="usd">12588</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242525_LG_1_AdditionalIndexMember_3YR"
      id="ixv-34964">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242525_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207119"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242525_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207120"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242525_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207121"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242525_LG_2_AdditionalIndexMember_3YR"
      id="ixv-34981">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242525_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207122"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242525_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207123"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242525_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207124"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242525_ClassMember" id="ixv-35023">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.09%

12.95%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242525_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207125"
      unitRef="pure">0.0509</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242525_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207126"
      unitRef="pure">0.1295</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242525_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207127"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242525_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207128"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242525_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207129"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242525_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207130"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242525_ClassMember" id="ixv-35078">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242525_ClassMember" id="ixv-35095">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242525_ClassMember" id="ixv-35099">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242525_ClassMember" id="ixv-35105">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242525_InstantMember"
      decimals="0"
      id="ixv-207131"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242525_InstantMember"
      decimals="INF"
      id="ixv-207132"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242525_ClassMember"
      decimals="0"
      id="ixv-207133"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242525_ClassMember"
      decimals="INF"
      id="ixv-207134"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242525_ClassMember" id="ixv-35180">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242525_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207135"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207136"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207137"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207138"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242525_ClassMember" id="ixv-35271">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242525_TH_0_Member"
      decimals="INF"
      id="ixv-207139"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_TH_1_Member"
      decimals="INF"
      id="ixv-207140"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_TH_2_Member"
      decimals="INF"
      id="ixv-207141"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_TH_3_Member"
      decimals="INF"
      id="ixv-207142"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_TH_4_Member"
      decimals="INF"
      id="ixv-207143"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242525_TH_5_Member"
      decimals="INF"
      id="ixv-207144"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242525_ClassMember" id="ixv-35356">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242525_ClassMember" id="ixv-35362">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242525_ClassMember" id="ixv-35366">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242525_ClassMember" id="ixv-35369">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242525_ClassMember" id="ixv-35373">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242525_ClassMember" id="ixv-35388">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-35444">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242568_ClassMember" id="ixv-35456">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242568_ClassMember" id="ixv-35459">Fidelity Advisor&#xae; Sustainable Target Date 2025 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242568_ClassMember" id="ixv-35463">FSWRX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242568_ClassMember" id="ixv-35482">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242568_ClassMember" id="ixv-35484">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242568_ClassMember" id="ixv-35489">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242568_ClassMember" id="ixv-35491">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242568_ClassMember" id="ixv-35494">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242568_ClassMember" id="ixv-35497">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242568_ClassMember" id="ixv-35504">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;148&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.45&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242568_ClassMember"
      decimals="0"
      id="ixv-207145"
      unitRef="usd">148</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242568_ClassMember"
      decimals="INF"
      id="ixv-207146"
      unitRef="pure">0.0145</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242568_ClassMember" id="ixv-35546">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242568_ClassMember" id="ixv-35570">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,017


$11,418



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242568_LG_ClassMember_3YR" id="ixv-35589">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242568_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207147"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242568_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207148"
      unitRef="usd">11017</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242568_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207149"
      unitRef="usd">11418</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242568_LG_1_AdditionalIndexMember_3YR"
      id="ixv-35606">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242568_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207150"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242568_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207151"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242568_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207152"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242568_LG_2_AdditionalIndexMember_3YR"
      id="ixv-35623">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242568_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207153"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242568_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207154"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242568_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207155"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242568_ClassMember" id="ixv-35665">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.64%

7.26%


Class C

3.64%

7.26%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_ClassMember_1YR"
      decimals="INF"
      id="ixv-207156"
      unitRef="pure">0.0264</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207157"
      unitRef="pure">0.0726</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207158"
      unitRef="pure">0.0364</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207159"
      unitRef="pure">0.0726</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207160"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207161"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207162"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242568_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207163"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242568_ClassMember" id="ixv-35732">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242568_ClassMember" id="ixv-35749">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242568_ClassMember" id="ixv-35753">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242568_ClassMember" id="ixv-35759">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242568_InstantMember"
      decimals="0"
      id="ixv-207164"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242568_InstantMember"
      decimals="INF"
      id="ixv-207165"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242568_ClassMember"
      decimals="0"
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      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242568_ClassMember"
      decimals="INF"
      id="ixv-207167"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242568_ClassMember" id="ixv-35834">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242568_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207168"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207169"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207170"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207171"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242568_ClassMember" id="ixv-35925">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242568_TH_0_Member"
      decimals="INF"
      id="ixv-207172"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_TH_1_Member"
      decimals="INF"
      id="ixv-207173"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_TH_2_Member"
      decimals="INF"
      id="ixv-207174"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_TH_3_Member"
      decimals="INF"
      id="ixv-207175"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_TH_4_Member"
      decimals="INF"
      id="ixv-207176"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_TH_5_Member"
      decimals="INF"
      id="ixv-207177"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242568_TH_6_Member"
      decimals="INF"
      id="ixv-207178"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-36066">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242588_ClassMember" id="ixv-36078">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242588_ClassMember" id="ixv-36081">Fidelity Advisor&#xae; Sustainable Target Date 2035 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242588_ClassMember" id="ixv-36085">FSXLX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242588_ClassMember" id="ixv-36104">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242588_ClassMember" id="ixv-36106">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242588_ClassMember" id="ixv-36111">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242588_ClassMember" id="ixv-36113">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242588_ClassMember" id="ixv-36116">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242588_ClassMember" id="ixv-36119">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242588_ClassMember" id="ixv-36126">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;74&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.72&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242588_ClassMember"
      decimals="0"
      id="ixv-207179"
      unitRef="usd">74</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242588_ClassMember"
      decimals="INF"
      id="ixv-207180"
      unitRef="pure">0.0072</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242588_ClassMember" id="ixv-36168">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242588_ClassMember" id="ixv-36192">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$10,861


$11,361



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242588_LG_ClassMember_3YR" id="ixv-36213">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242588_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207181"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242588_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207182"
      unitRef="usd">10861</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242588_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207183"
      unitRef="usd">11361</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242588_LG_1_AdditionalIndexMember_3YR"
      id="ixv-36230">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242588_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207184"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242588_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207185"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242588_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207186"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242588_LG_2_AdditionalIndexMember_3YR"
      id="ixv-36247">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242588_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207187"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242588_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207188"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242588_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207189"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242588_ClassMember" id="ixv-36289">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.41%

6.98%


Class A (without 5.75% sales charge)

4.61%

10.39%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_ClassMember_1YR"
      decimals="INF"
      id="ixv-207190"
      unitRef="pure">-0.0141</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207191"
      unitRef="pure">0.0698</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207192"
      unitRef="pure">0.0461</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207193"
      unitRef="pure">0.1039</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207194"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207195"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207196"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242588_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207197"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242588_ClassMember" id="ixv-36356">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242588_ClassMember" id="ixv-36373">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242588_ClassMember" id="ixv-36377">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242588_ClassMember" id="ixv-36383">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242588_InstantMember"
      decimals="0"
      id="ixv-207198"
      unitRef="usd">5343383</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242588_InstantMember"
      decimals="INF"
      id="ixv-207199"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242588_ClassMember"
      decimals="0"
      id="ixv-207200"
      unitRef="usd">17388</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242588_ClassMember"
      decimals="INF"
      id="ixv-207201"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242588_ClassMember" id="ixv-36458">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242588_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207202"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207203"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207204"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207205"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242588_ClassMember" id="ixv-36549">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242588_TH_0_Member"
      decimals="INF"
      id="ixv-207206"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_TH_1_Member"
      decimals="INF"
      id="ixv-207207"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_TH_2_Member"
      decimals="INF"
      id="ixv-207208"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_TH_3_Member"
      decimals="INF"
      id="ixv-207209"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_TH_4_Member"
      decimals="INF"
      id="ixv-207210"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_TH_5_Member"
      decimals="INF"
      id="ixv-207211"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242588_TH_6_Member"
      decimals="INF"
      id="ixv-207212"
      unitRef="pure">0.027</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-36690">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242557_ClassMember" id="ixv-36702">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242557_ClassMember" id="ixv-36705">Fidelity Advisor&#xae; Sustainable Target Date 2020 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242557_ClassMember" id="ixv-36709">FSWKX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242557_ClassMember" id="ixv-36728">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242557_ClassMember" id="ixv-36730">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242557_ClassMember" id="ixv-36735">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242557_ClassMember" id="ixv-36737">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242557_ClassMember" id="ixv-36740">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242557_ClassMember" id="ixv-36743">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242557_ClassMember" id="ixv-36750">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;34&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.33&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242557_ClassMember"
      decimals="0"
      id="ixv-207213"
      unitRef="usd">34</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242557_ClassMember"
      decimals="INF"
      id="ixv-207214"
      unitRef="pure">0.0033</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242557_ClassMember" id="ixv-36792">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242557_ClassMember" id="ixv-36816">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$10,974


$11,516



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242557_LG_ClassMember_3YR" id="ixv-36835">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242557_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207215"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242557_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207216"
      unitRef="usd">10974</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242557_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207217"
      unitRef="usd">11516</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242557_LG_1_AdditionalIndexMember_3YR"
      id="ixv-36852">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242557_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207218"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242557_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207219"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242557_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207220"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242557_LG_2_AdditionalIndexMember_3YR"
      id="ixv-36869">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242557_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207221"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242557_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207222"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242557_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207223"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242557_ClassMember" id="ixv-36911">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.94%

7.75%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242557_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207224"
      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242557_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207225"
      unitRef="pure">0.0775</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242557_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207226"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242557_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207227"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242557_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207228"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242557_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207229"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242557_ClassMember" id="ixv-36966">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242557_ClassMember" id="ixv-36983">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242557_ClassMember" id="ixv-36987">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242557_ClassMember" id="ixv-36993">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242557_InstantMember"
      decimals="0"
      id="ixv-207230"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242557_InstantMember"
      decimals="INF"
      id="ixv-207231"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242557_ClassMember"
      decimals="0"
      id="ixv-207232"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242557_ClassMember"
      decimals="INF"
      id="ixv-207233"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242557_ClassMember" id="ixv-37068">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242557_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207234"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207235"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207236"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207237"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207238"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242557_ClassMember" id="ixv-37172">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242557_TH_0_Member"
      decimals="INF"
      id="ixv-207239"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_1_Member"
      decimals="INF"
      id="ixv-207240"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_2_Member"
      decimals="INF"
      id="ixv-207241"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_3_Member"
      decimals="INF"
      id="ixv-207242"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_4_Member"
      decimals="INF"
      id="ixv-207243"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_5_Member"
      decimals="INF"
      id="ixv-207244"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_6_Member"
      decimals="INF"
      id="ixv-207245"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_7_Member"
      decimals="INF"
      id="ixv-207246"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242557_TH_8_Member"
      decimals="INF"
      id="ixv-207247"
      unitRef="pure">0.001</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-37333">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242511_ClassMember" id="ixv-37337">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242511_ClassMember" id="ixv-37348">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242511_ClassMember" id="ixv-37351">Fidelity Advisor&#xae; Sustainable Target Date 2055 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242511_ClassMember" id="ixv-37355">FSZKX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242511_ClassMember" id="ixv-37374">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242511_ClassMember" id="ixv-37376">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242511_ClassMember" id="ixv-37381">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242511_ClassMember" id="ixv-37383">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242511_ClassMember" id="ixv-37386">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242511_ClassMember" id="ixv-37389">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242511_ClassMember" id="ixv-37396">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;152&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242511_ClassMember"
      decimals="0"
      id="ixv-207248"
      unitRef="usd">152</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242511_ClassMember"
      decimals="INF"
      id="ixv-207249"
      unitRef="pure">0.0149</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242511_ClassMember" id="ixv-37438">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242511_ClassMember" id="ixv-37462">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,849


$12,305



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242511_LG_ClassMember_3YR" id="ixv-37481">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242511_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207250"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242511_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207251"
      unitRef="usd">11849</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242511_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207252"
      unitRef="usd">12305</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242511_LG_1_AdditionalIndexMember_3YR"
      id="ixv-37498">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242511_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207253"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242511_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207254"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242511_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207255"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242511_LG_2_AdditionalIndexMember_3YR"
      id="ixv-37515">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242511_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207256"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242511_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207257"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242511_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207258"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242511_ClassMember" id="ixv-37557">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.85%

11.60%


Class C

3.85%

11.60%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_ClassMember_1YR"
      decimals="INF"
      id="ixv-207259"
      unitRef="pure">0.0285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207260"
      unitRef="pure">0.1160</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207261"
      unitRef="pure">0.0385</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207262"
      unitRef="pure">0.1160</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207263"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207264"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207265"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242511_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207266"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242511_ClassMember" id="ixv-37624">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242511_ClassMember" id="ixv-37641">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242511_ClassMember" id="ixv-37645">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242511_ClassMember" id="ixv-37651">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242511_InstantMember"
      decimals="0"
      id="ixv-207267"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242511_InstantMember"
      decimals="INF"
      id="ixv-207268"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242511_ClassMember"
      decimals="0"
      id="ixv-207269"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242511_ClassMember"
      decimals="INF"
      id="ixv-207270"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242511_ClassMember" id="ixv-37726">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242511_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207271"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207272"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207273"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207274"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242511_ClassMember" id="ixv-37817">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242511_TH_0_Member"
      decimals="INF"
      id="ixv-207275"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_TH_1_Member"
      decimals="INF"
      id="ixv-207276"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_TH_2_Member"
      decimals="INF"
      id="ixv-207277"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_TH_3_Member"
      decimals="INF"
      id="ixv-207278"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_TH_4_Member"
      decimals="INF"
      id="ixv-207279"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242511_TH_5_Member"
      decimals="INF"
      id="ixv-207280"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242511_ClassMember" id="ixv-37902">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242511_ClassMember" id="ixv-37908">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242511_ClassMember" id="ixv-37912">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242511_ClassMember" id="ixv-37915">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242511_ClassMember" id="ixv-37919">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242511_ClassMember" id="ixv-37930">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-37988">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242520_ClassMember" id="ixv-37992">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242520_ClassMember" id="ixv-38003">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242520_ClassMember" id="ixv-38006">Fidelity Advisor&#xae; Sustainable Target Date 2060 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242520_ClassMember" id="ixv-38010">FSZVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242520_ClassMember" id="ixv-38029">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242520_ClassMember" id="ixv-38031">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242520_ClassMember" id="ixv-38036">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242520_ClassMember" id="ixv-38038">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242520_ClassMember" id="ixv-38041">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242520_ClassMember" id="ixv-38044">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242520_ClassMember" id="ixv-38051">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;152&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242520_ClassMember"
      decimals="0"
      id="ixv-207281"
      unitRef="usd">152</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242520_ClassMember"
      decimals="INF"
      id="ixv-207282"
      unitRef="pure">0.0149</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242520_ClassMember" id="ixv-38093">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242520_ClassMember" id="ixv-38117">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,853


$12,311



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242520_LG_ClassMember_3YR" id="ixv-38136">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242520_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207283"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242520_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207284"
      unitRef="usd">11853</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242520_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207285"
      unitRef="usd">12311</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242520_LG_1_AdditionalIndexMember_3YR"
      id="ixv-38153">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242520_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207286"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242520_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207287"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242520_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207288"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242520_LG_2_AdditionalIndexMember_3YR"
      id="ixv-38170">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242520_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207289"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242520_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207290"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242520_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207291"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242520_ClassMember" id="ixv-38212">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.86%

11.62%


Class C

3.86%

11.62%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_ClassMember_1YR"
      decimals="INF"
      id="ixv-207292"
      unitRef="pure">0.0286</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207293"
      unitRef="pure">0.1162</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207294"
      unitRef="pure">0.0386</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207295"
      unitRef="pure">0.1162</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207296"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207297"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207298"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242520_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207299"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242520_ClassMember" id="ixv-38279">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242520_ClassMember" id="ixv-38296">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242520_ClassMember" id="ixv-38300">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242520_ClassMember" id="ixv-38306">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242520_InstantMember"
      decimals="0"
      id="ixv-207300"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242520_InstantMember"
      decimals="INF"
      id="ixv-207301"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242520_ClassMember"
      decimals="0"
      id="ixv-207302"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242520_ClassMember"
      decimals="INF"
      id="ixv-207303"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242520_ClassMember" id="ixv-38381">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242520_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207304"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207305"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207306"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207307"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242520_ClassMember" id="ixv-38472">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242520_TH_0_Member"
      decimals="INF"
      id="ixv-207308"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_TH_1_Member"
      decimals="INF"
      id="ixv-207309"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_TH_2_Member"
      decimals="INF"
      id="ixv-207310"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_TH_3_Member"
      decimals="INF"
      id="ixv-207311"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_TH_4_Member"
      decimals="INF"
      id="ixv-207312"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242520_TH_5_Member"
      decimals="INF"
      id="ixv-207313"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242520_ClassMember" id="ixv-38557">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242520_ClassMember" id="ixv-38563">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242520_ClassMember" id="ixv-38567">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242520_ClassMember" id="ixv-38570">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242520_ClassMember" id="ixv-38574">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242520_ClassMember" id="ixv-38585">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-38643">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242539_ClassMember" id="ixv-38655">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242539_ClassMember" id="ixv-38658">Fidelity Advisor&#xae; Sustainable Target Date 2010 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242539_ClassMember" id="ixv-38662">FSVHX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242539_ClassMember" id="ixv-38681">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242539_ClassMember" id="ixv-38683">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242539_ClassMember" id="ixv-38688">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242539_ClassMember" id="ixv-38690">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242539_ClassMember" id="ixv-38693">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242539_ClassMember" id="ixv-38696">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242539_ClassMember" id="ixv-38703">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242539_ClassMember"
      decimals="0"
      id="ixv-207314"
      unitRef="usd">32</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242539_ClassMember"
      decimals="INF"
      id="ixv-207315"
      unitRef="pure">0.0031</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242539_ClassMember" id="ixv-38745">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242539_ClassMember" id="ixv-38769">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$10,655


$11,201



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242539_LG_ClassMember_3YR" id="ixv-38788">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242539_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207316"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242539_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207317"
      unitRef="usd">10655</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242539_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207318"
      unitRef="usd">11201</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242539_LG_1_AdditionalIndexMember_3YR"
      id="ixv-38805">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242539_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207319"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242539_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207320"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242539_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207321"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242539_LG_2_AdditionalIndexMember_3YR"
      id="ixv-38822">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242539_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207322"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242539_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207323"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242539_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207324"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242539_ClassMember" id="ixv-38864">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

5.13%

6.18%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242539_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207325"
      unitRef="pure">0.0513</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242539_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207326"
      unitRef="pure">0.0618</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242539_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207327"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242539_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207328"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242539_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207329"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242539_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207330"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242539_ClassMember" id="ixv-38919">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242539_ClassMember" id="ixv-38936">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242539_ClassMember" id="ixv-38940">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242539_ClassMember" id="ixv-38946">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242539_InstantMember"
      decimals="0"
      id="ixv-207331"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242539_InstantMember"
      decimals="INF"
      id="ixv-207332"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242539_ClassMember"
      decimals="0"
      id="ixv-207333"
      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242539_ClassMember"
      decimals="INF"
      id="ixv-207334"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242539_ClassMember" id="ixv-39021">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242539_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207335"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207336"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207337"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207338"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207339"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242539_ClassMember" id="ixv-39125">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242539_TH_0_Member"
      decimals="INF"
      id="ixv-207340"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_1_Member"
      decimals="INF"
      id="ixv-207341"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_2_Member"
      decimals="INF"
      id="ixv-207342"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_3_Member"
      decimals="INF"
      id="ixv-207343"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_4_Member"
      decimals="INF"
      id="ixv-207344"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_5_Member"
      decimals="INF"
      id="ixv-207345"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_6_Member"
      decimals="INF"
      id="ixv-207346"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_7_Member"
      decimals="INF"
      id="ixv-207347"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242539_TH_8_Member"
      decimals="INF"
      id="ixv-207348"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-39286">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242604_ClassMember" id="ixv-39298">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242604_ClassMember" id="ixv-39301">Fidelity Advisor&#xae; Sustainable Target Date 2045 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242604_ClassMember" id="ixv-39305">FSYOX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242604_ClassMember" id="ixv-39324">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242604_ClassMember" id="ixv-39326">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242604_ClassMember" id="ixv-39331">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242604_ClassMember" id="ixv-39333">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242604_ClassMember" id="ixv-39336">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242604_ClassMember" id="ixv-39339">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242604_ClassMember" id="ixv-39346">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;152&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242604_ClassMember"
      decimals="0"
      id="ixv-207349"
      unitRef="usd">152</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242604_ClassMember"
      decimals="INF"
      id="ixv-207350"
      unitRef="pure">0.0149</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242604_ClassMember" id="ixv-39388">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242604_ClassMember" id="ixv-39412">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,853


$12,309



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242604_LG_ClassMember_3YR" id="ixv-39431">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242604_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207351"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242604_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207352"
      unitRef="usd">11853</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242604_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207353"
      unitRef="usd">12309</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242604_LG_1_AdditionalIndexMember_3YR"
      id="ixv-39448">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242604_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207354"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242604_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207355"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242604_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207356"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242604_LG_2_AdditionalIndexMember_3YR"
      id="ixv-39465">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242604_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207357"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242604_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207358"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242604_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207359"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242604_ClassMember" id="ixv-39507">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.85%

11.62%


Class C

3.85%

11.62%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_ClassMember_1YR"
      decimals="INF"
      id="ixv-207360"
      unitRef="pure">0.0285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207361"
      unitRef="pure">0.1162</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207362"
      unitRef="pure">0.0385</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207363"
      unitRef="pure">0.1162</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207364"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207365"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207366"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242604_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207367"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242604_ClassMember" id="ixv-39574">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242604_ClassMember" id="ixv-39591">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242604_ClassMember" id="ixv-39595">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242604_ClassMember" id="ixv-39601">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242604_InstantMember"
      decimals="0"
      id="ixv-207368"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242604_InstantMember"
      decimals="INF"
      id="ixv-207369"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242604_ClassMember"
      decimals="0"
      id="ixv-207370"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242604_ClassMember"
      decimals="INF"
      id="ixv-207371"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242604_ClassMember" id="ixv-39676">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242604_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207372"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207373"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207374"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207375"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242604_ClassMember" id="ixv-39767">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242604_TH_0_Member"
      decimals="INF"
      id="ixv-207376"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_TH_1_Member"
      decimals="INF"
      id="ixv-207377"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_TH_2_Member"
      decimals="INF"
      id="ixv-207378"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_TH_3_Member"
      decimals="INF"
      id="ixv-207379"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_TH_4_Member"
      decimals="INF"
      id="ixv-207380"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242604_TH_5_Member"
      decimals="INF"
      id="ixv-207381"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-39898">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242606_ClassMember" id="ixv-39910">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242606_ClassMember" id="ixv-39913">Fidelity Advisor&#xae; Sustainable Target Date 2045 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242606_ClassMember" id="ixv-39917">FSYLX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242606_ClassMember" id="ixv-39936">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242606_ClassMember" id="ixv-39938">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242606_ClassMember" id="ixv-39943">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242606_ClassMember" id="ixv-39945">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242606_ClassMember" id="ixv-39948">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242606_ClassMember" id="ixv-39951">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242606_ClassMember" id="ixv-39958">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;76&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.74&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242606_ClassMember"
      decimals="0"
      id="ixv-207382"
      unitRef="usd">76</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242606_ClassMember"
      decimals="INF"
      id="ixv-207383"
      unitRef="pure">0.0074</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242606_ClassMember" id="ixv-40000">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242606_ClassMember" id="ixv-40024">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$11,249


$11,762



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242606_LG_ClassMember_3YR" id="ixv-40045">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242606_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207384"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242606_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207385"
      unitRef="usd">11249</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242606_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207386"
      unitRef="usd">11762</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242606_LG_1_AdditionalIndexMember_3YR"
      id="ixv-40062">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242606_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207387"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242606_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207388"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242606_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207389"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242606_LG_2_AdditionalIndexMember_3YR"
      id="ixv-40079">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242606_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207390"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242606_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207391"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242606_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207392"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242606_ClassMember" id="ixv-40121">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.45%

8.97%


Class A (without 5.75% sales charge)

4.56%

12.43%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_ClassMember_1YR"
      decimals="INF"
      id="ixv-207393"
      unitRef="pure">-0.0145</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207394"
      unitRef="pure">0.0897</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207395"
      unitRef="pure">0.0456</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207396"
      unitRef="pure">0.1243</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207397"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207398"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207399"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242606_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207400"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242606_ClassMember" id="ixv-40188">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242606_ClassMember" id="ixv-40205">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242606_ClassMember" id="ixv-40209">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242606_ClassMember" id="ixv-40215">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242606_InstantMember"
      decimals="0"
      id="ixv-207401"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242606_InstantMember"
      decimals="INF"
      id="ixv-207402"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242606_ClassMember"
      decimals="0"
      id="ixv-207403"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242606_ClassMember"
      decimals="INF"
      id="ixv-207404"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242606_ClassMember" id="ixv-40290">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242606_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207405"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207406"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207407"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207408"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242606_ClassMember" id="ixv-40381">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242606_TH_0_Member"
      decimals="INF"
      id="ixv-207409"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_TH_1_Member"
      decimals="INF"
      id="ixv-207410"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_TH_2_Member"
      decimals="INF"
      id="ixv-207411"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_TH_3_Member"
      decimals="INF"
      id="ixv-207412"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_TH_4_Member"
      decimals="INF"
      id="ixv-207413"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242606_TH_5_Member"
      decimals="INF"
      id="ixv-207414"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-40512">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242554_ClassMember" id="ixv-40516">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242554_ClassMember" id="ixv-40527">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242554_ClassMember" id="ixv-40530">Fidelity&#xae; Sustainable Target Date 2020 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242554_ClassMember" id="ixv-40534">FSWNX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242554_ClassMember" id="ixv-40553">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242554_ClassMember" id="ixv-40555">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242554_ClassMember" id="ixv-40560">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242554_ClassMember" id="ixv-40562">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242554_ClassMember" id="ixv-40565">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242554_ClassMember" id="ixv-40568">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242554_ClassMember" id="ixv-40575">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242554_ClassMember"
      decimals="0"
      id="ixv-207415"
      unitRef="usd">24</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242554_ClassMember"
      decimals="INF"
      id="ixv-207416"
      unitRef="pure">0.0023</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242554_ClassMember" id="ixv-40617">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242554_ClassMember" id="ixv-40641">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$10,982


$11,540



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242554_LG_ClassMember_3YR" id="ixv-40660">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242554_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207417"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242554_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207418"
      unitRef="usd">10982</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242554_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207419"
      unitRef="usd">11540</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242554_LG_1_AdditionalIndexMember_3YR"
      id="ixv-40677">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242554_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207420"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242554_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207421"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242554_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207422"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242554_LG_2_AdditionalIndexMember_3YR"
      id="ixv-40694">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242554_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207423"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242554_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207424"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242554_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207425"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242554_ClassMember" id="ixv-40736">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.08%

7.87%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242554_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207426"
      unitRef="pure">0.0508</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242554_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207427"
      unitRef="pure">0.0787</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242554_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207428"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242554_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207429"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242554_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207430"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242554_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207431"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242554_ClassMember" id="ixv-40791">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242554_ClassMember" id="ixv-40808">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242554_ClassMember" id="ixv-40812">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242554_ClassMember" id="ixv-40818">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242554_InstantMember"
      decimals="0"
      id="ixv-207432"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242554_InstantMember"
      decimals="INF"
      id="ixv-207433"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242554_ClassMember"
      decimals="0"
      id="ixv-207434"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242554_ClassMember"
      decimals="INF"
      id="ixv-207435"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242554_ClassMember" id="ixv-40893">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242554_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207436"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207437"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207438"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207439"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207440"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242554_ClassMember" id="ixv-40997">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242554_TH_0_Member"
      decimals="INF"
      id="ixv-207441"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_1_Member"
      decimals="INF"
      id="ixv-207442"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_2_Member"
      decimals="INF"
      id="ixv-207443"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_3_Member"
      decimals="INF"
      id="ixv-207444"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_4_Member"
      decimals="INF"
      id="ixv-207445"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_5_Member"
      decimals="INF"
      id="ixv-207446"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_6_Member"
      decimals="INF"
      id="ixv-207447"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_7_Member"
      decimals="INF"
      id="ixv-207448"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242554_TH_8_Member"
      decimals="INF"
      id="ixv-207449"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242554_ClassMember" id="ixv-41112">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242554_ClassMember" id="ixv-41118">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242554_ClassMember" id="ixv-41122">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242554_ClassMember" id="ixv-41125">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242554_ClassMember" id="ixv-41129">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-41195">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242600_ClassMember" id="ixv-41207">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242600_ClassMember" id="ixv-41210">Fidelity&#xae; Sustainable Target Date 2045 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242600_ClassMember" id="ixv-41214">FSYUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242600_ClassMember" id="ixv-41233">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242600_ClassMember" id="ixv-41235">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242600_ClassMember" id="ixv-41240">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242600_ClassMember" id="ixv-41242">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242600_ClassMember" id="ixv-41245">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242600_ClassMember" id="ixv-41248">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242600_ClassMember" id="ixv-41255">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242600_ClassMember"
      decimals="0"
      id="ixv-207450"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242600_ClassMember"
      decimals="INF"
      id="ixv-207451"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242600_ClassMember" id="ixv-41297">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242600_ClassMember" id="ixv-41321">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,970


$12,559



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242600_LG_ClassMember_3YR" id="ixv-41340">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242600_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207452"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242600_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207453"
      unitRef="usd">11970</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242600_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207454"
      unitRef="usd">12559</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242600_LG_1_AdditionalIndexMember_3YR"
      id="ixv-41357">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242600_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207455"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242600_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207456"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242600_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207457"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242600_LG_2_AdditionalIndexMember_3YR"
      id="ixv-41374">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242600_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207458"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242600_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207459"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242600_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207460"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242600_ClassMember" id="ixv-41416">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.92%

12.81%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242600_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207461"
      unitRef="pure">0.0492</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242600_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207462"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242600_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207463"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242600_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207464"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242600_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207465"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242600_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207466"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242600_ClassMember" id="ixv-41471">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242600_ClassMember" id="ixv-41488">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242600_ClassMember" id="ixv-41492">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242600_ClassMember" id="ixv-41498">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242600_InstantMember"
      decimals="0"
      id="ixv-207467"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242600_InstantMember"
      decimals="INF"
      id="ixv-207468"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242600_ClassMember"
      decimals="0"
      id="ixv-207469"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242600_ClassMember"
      decimals="INF"
      id="ixv-207470"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242600_ClassMember" id="ixv-41573">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242600_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207471"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207472"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207473"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207474"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242600_ClassMember" id="ixv-41664">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242600_TH_0_Member"
      decimals="INF"
      id="ixv-207475"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_TH_1_Member"
      decimals="INF"
      id="ixv-207476"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_TH_2_Member"
      decimals="INF"
      id="ixv-207477"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_TH_3_Member"
      decimals="INF"
      id="ixv-207478"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_TH_4_Member"
      decimals="INF"
      id="ixv-207479"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242600_TH_5_Member"
      decimals="INF"
      id="ixv-207480"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-41795">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242596_ClassMember" id="ixv-41807">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242596_ClassMember" id="ixv-41810">Fidelity Advisor&#xae; Sustainable Target Date 2040 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242596_ClassMember" id="ixv-41814">FSXZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242596_ClassMember" id="ixv-41833">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242596_ClassMember" id="ixv-41835">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242596_ClassMember" id="ixv-41840">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242596_ClassMember" id="ixv-41842">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242596_ClassMember" id="ixv-41845">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242596_ClassMember" id="ixv-41848">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242596_ClassMember" id="ixv-41855">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;100&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.98&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242596_ClassMember"
      decimals="0"
      id="ixv-207481"
      unitRef="usd">100</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242596_ClassMember"
      decimals="INF"
      id="ixv-207482"
      unitRef="pure">0.0098</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242596_ClassMember" id="ixv-41897">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242596_ClassMember" id="ixv-41921">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$11,394


$11,894



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242596_LG_ClassMember_3YR" id="ixv-41942">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242596_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207483"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242596_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207484"
      unitRef="usd">11394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242596_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207485"
      unitRef="usd">11894</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242596_LG_1_AdditionalIndexMember_3YR"
      id="ixv-41959">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242596_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207486"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242596_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207487"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242596_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207488"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242596_LG_2_AdditionalIndexMember_3YR"
      id="ixv-41976">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242596_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207489"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242596_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207490"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242596_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207491"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242596_ClassMember" id="ixv-42018">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.73%

9.61%


Class M (without 3.50% sales charge)

4.39%

11.69%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_ClassMember_1YR"
      decimals="INF"
      id="ixv-207492"
      unitRef="pure">0.0073</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207493"
      unitRef="pure">0.0961</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207494"
      unitRef="pure">0.0439</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207495"
      unitRef="pure">0.1169</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207496"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207497"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207498"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242596_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207499"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242596_ClassMember" id="ixv-42084">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242596_ClassMember" id="ixv-42101">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242596_ClassMember" id="ixv-42105">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242596_ClassMember" id="ixv-42111">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242596_InstantMember"
      decimals="0"
      id="ixv-207500"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242596_InstantMember"
      decimals="INF"
      id="ixv-207501"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242596_ClassMember"
      decimals="0"
      id="ixv-207502"
      unitRef="usd">25445</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242596_ClassMember"
      decimals="INF"
      id="ixv-207503"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242596_ClassMember" id="ixv-42186">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242596_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207504"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207505"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207506"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207507"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242596_ClassMember" id="ixv-42277">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242596_TH_0_Member"
      decimals="INF"
      id="ixv-207508"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_TH_1_Member"
      decimals="INF"
      id="ixv-207509"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_TH_2_Member"
      decimals="INF"
      id="ixv-207510"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_TH_3_Member"
      decimals="INF"
      id="ixv-207511"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_TH_4_Member"
      decimals="INF"
      id="ixv-207512"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_TH_5_Member"
      decimals="INF"
      id="ixv-207513"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242596_TH_6_Member"
      decimals="INF"
      id="ixv-207514"
      unitRef="pure">0.009</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-42418">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242495_ClassMember" id="ixv-42430">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242495_ClassMember" id="ixv-42433">Fidelity&#xae; Sustainable Target Date Income Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242495_ClassMember" id="ixv-42437">FSUDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242495_ClassMember" id="ixv-42456">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242495_ClassMember" id="ixv-42458">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242495_ClassMember" id="ixv-42463">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242495_ClassMember" id="ixv-42465">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242495_ClassMember" id="ixv-42468">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242495_ClassMember" id="ixv-42471">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242495_ClassMember" id="ixv-42478">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date Income Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;42&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.41&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242495_ClassMember"
      decimals="0"
      id="ixv-207515"
      unitRef="usd">42</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242495_ClassMember"
      decimals="INF"
      id="ixv-207516"
      unitRef="pure">0.0041</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242495_ClassMember" id="ixv-42520">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242495_ClassMember" id="ixv-42544">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date Income Fund


$10,000

$10,488


$11,023



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242495_LG_ClassMember_3YR" id="ixv-42563">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date Income Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242495_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207517"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242495_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207518"
      unitRef="usd">10488</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242495_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207519"
      unitRef="usd">11023</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242495_LG_1_AdditionalIndexMember_3YR"
      id="ixv-42580">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242495_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207520"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242495_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207521"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242495_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207522"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242495_LG_2_AdditionalIndexMember_3YR"
      id="ixv-42597">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242495_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207523"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242495_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207524"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242495_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207525"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242495_ClassMember" id="ixv-42639">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date Income Fund

5.10%

5.29%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242495_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207526"
      unitRef="pure">0.0510</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242495_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207527"
      unitRef="pure">0.0529</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242495_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207528"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242495_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207529"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242495_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207530"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242495_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207531"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242495_ClassMember" id="ixv-42694">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242495_ClassMember" id="ixv-42711">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242495_ClassMember" id="ixv-42715">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242495_ClassMember" id="ixv-42721">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242495_InstantMember"
      decimals="0"
      id="ixv-207532"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242495_InstantMember"
      decimals="INF"
      id="ixv-207533"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242495_ClassMember"
      decimals="0"
      id="ixv-207534"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242495_ClassMember"
      decimals="INF"
      id="ixv-207535"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242495_ClassMember" id="ixv-42796">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242495_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207536"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207537"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207538"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207539"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207540"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242495_ClassMember" id="ixv-42900">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242495_TH_0_Member"
      decimals="INF"
      id="ixv-207541"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_1_Member"
      decimals="INF"
      id="ixv-207542"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_2_Member"
      decimals="INF"
      id="ixv-207543"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_3_Member"
      decimals="INF"
      id="ixv-207544"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_4_Member"
      decimals="INF"
      id="ixv-207545"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_5_Member"
      decimals="INF"
      id="ixv-207546"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_6_Member"
      decimals="INF"
      id="ixv-207547"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_7_Member"
      decimals="INF"
      id="ixv-207548"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242495_TH_8_Member"
      decimals="INF"
      id="ixv-207549"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-43061">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242564_ClassMember" id="ixv-43073">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242564_ClassMember" id="ixv-43076">Fidelity&#xae; Sustainable Target Date 2025 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242564_ClassMember" id="ixv-43080">FSWYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242564_ClassMember" id="ixv-43099">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242564_ClassMember" id="ixv-43101">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242564_ClassMember" id="ixv-43106">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242564_ClassMember" id="ixv-43108">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242564_ClassMember" id="ixv-43111">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242564_ClassMember" id="ixv-43114">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242564_ClassMember" id="ixv-43121">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;36&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.35&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242564_ClassMember"
      decimals="0"
      id="ixv-207550"
      unitRef="usd">36</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242564_ClassMember"
      decimals="INF"
      id="ixv-207551"
      unitRef="pure">0.0035</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242564_ClassMember" id="ixv-43163">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242564_ClassMember" id="ixv-43187">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,120


$11,659



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242564_LG_ClassMember_3YR" id="ixv-43206">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242564_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207552"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242564_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207553"
      unitRef="usd">11120</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242564_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207554"
      unitRef="usd">11659</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242564_LG_1_AdditionalIndexMember_3YR"
      id="ixv-43223">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242564_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207555"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242564_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207556"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242564_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207557"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242564_LG_2_AdditionalIndexMember_3YR"
      id="ixv-43240">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242564_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207558"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242564_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207559"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242564_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207560"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242564_ClassMember" id="ixv-43282">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.85%

8.46%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242564_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207561"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242564_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207562"
      unitRef="pure">0.0846</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242564_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207563"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242564_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207564"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242564_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207565"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242564_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207566"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242564_ClassMember" id="ixv-43337">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242564_ClassMember" id="ixv-43354">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242564_ClassMember" id="ixv-43358">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242564_ClassMember" id="ixv-43364">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
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      decimals="0"
      id="ixv-207567"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242564_InstantMember"
      decimals="INF"
      id="ixv-207568"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      decimals="0"
      id="ixv-207569"
      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
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      id="ixv-207570"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242564_ClassMember" id="ixv-43439">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242564_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207571"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207572"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-207573"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207574"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242564_ClassMember" id="ixv-43530">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242564_TH_0_Member"
      decimals="INF"
      id="ixv-207575"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_TH_1_Member"
      decimals="INF"
      id="ixv-207576"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_TH_2_Member"
      decimals="INF"
      id="ixv-207577"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_TH_3_Member"
      decimals="INF"
      id="ixv-207578"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_TH_4_Member"
      decimals="INF"
      id="ixv-207579"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_TH_5_Member"
      decimals="INF"
      id="ixv-207580"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242564_TH_6_Member"
      decimals="INF"
      id="ixv-207581"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-43671">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242518_ClassMember" id="ixv-43675">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242518_ClassMember" id="ixv-43686">Fidelity&#xae; Sustainable Target Date 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242518_ClassMember" id="ixv-43689">Fidelity Advisor&#xae; Sustainable Target Date 2060 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242518_ClassMember" id="ixv-43693">FSZTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242518_ClassMember" id="ixv-43712">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242518_ClassMember" id="ixv-43714">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242518_ClassMember" id="ixv-43719">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242518_ClassMember" id="ixv-43721">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242518_ClassMember" id="ixv-43724">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242518_ClassMember" id="ixv-43727">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242518_ClassMember" id="ixv-43734">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;76&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.74&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242518_ClassMember"
      decimals="0"
      id="ixv-207582"
      unitRef="usd">76</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242518_ClassMember"
      decimals="INF"
      id="ixv-207583"
      unitRef="pure">0.0074</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242518_ClassMember" id="ixv-43776">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242518_ClassMember" id="ixv-43800">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$11,249


$11,760



Fidelity Sustainable Target Date 2060 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242518_LG_ClassMember_3YR" id="ixv-43821">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242518_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207584"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242518_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207585"
      unitRef="usd">11249</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242518_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207586"
      unitRef="usd">11760</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242518_LG_1_AdditionalIndexMember_3YR"
      id="ixv-43838">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242518_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207587"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242518_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207588"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242518_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207589"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242518_LG_2_AdditionalIndexMember_3YR"
      id="ixv-43855">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242518_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207590"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242518_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207591"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242518_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207592"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242518_ClassMember" id="ixv-43897">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.47%

8.95%


Class A (without 5.75% sales charge)

4.54%

12.42%


Fidelity Sustainable Target Date 2060 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_ClassMember_1YR"
      decimals="INF"
      id="ixv-207593"
      unitRef="pure">-0.0147</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207594"
      unitRef="pure">0.0895</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207595"
      unitRef="pure">0.0454</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207596"
      unitRef="pure">0.1242</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207597"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207598"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207599"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242518_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207600"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242518_ClassMember" id="ixv-43964">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242518_ClassMember" id="ixv-43981">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242518_ClassMember" id="ixv-43985">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242518_ClassMember" id="ixv-43991">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,661,542&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;19,362&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;24&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242518_InstantMember"
      decimals="0"
      id="ixv-207601"
      unitRef="usd">5661542</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242518_InstantMember"
      decimals="INF"
      id="ixv-207602"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242518_ClassMember"
      decimals="0"
      id="ixv-207603"
      unitRef="usd">19362</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242518_ClassMember"
      decimals="INF"
      id="ixv-207604"
      unitRef="pure">0.24</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242518_ClassMember" id="ixv-44066">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242518_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207605"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207606"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207607"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207608"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242518_ClassMember" id="ixv-44157">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242518_TH_0_Member"
      decimals="INF"
      id="ixv-207609"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_TH_1_Member"
      decimals="INF"
      id="ixv-207610"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_TH_2_Member"
      decimals="INF"
      id="ixv-207611"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_TH_3_Member"
      decimals="INF"
      id="ixv-207612"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_TH_4_Member"
      decimals="INF"
      id="ixv-207613"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242518_TH_5_Member"
      decimals="INF"
      id="ixv-207614"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242518_ClassMember" id="ixv-44242">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242518_ClassMember" id="ixv-44248">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242518_ClassMember" id="ixv-44252">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242518_ClassMember" id="ixv-44255">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242518_ClassMember" id="ixv-44259">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242518_ClassMember" id="ixv-44270">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-44328">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242576_ClassMember" id="ixv-44340">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242576_ClassMember" id="ixv-44343">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242576_ClassMember" id="ixv-44347">FSXAX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242576_ClassMember" id="ixv-44366">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242576_ClassMember" id="ixv-44368">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242576_ClassMember" id="ixv-44373">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242576_ClassMember" id="ixv-44375">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242576_ClassMember" id="ixv-44378">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242576_ClassMember" id="ixv-44381">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242576_ClassMember" id="ixv-44388">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2030 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;47&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.46&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242576_ClassMember"
      decimals="0"
      id="ixv-207615"
      unitRef="usd">47</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242576_ClassMember"
      decimals="INF"
      id="ixv-207616"
      unitRef="pure">0.0046</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242576_ClassMember" id="ixv-44430">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242576_ClassMember" id="ixv-44454">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2030 Fund


$10,000

$11,275


$11,805



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242576_LG_ClassMember_3YR" id="ixv-44473">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2030 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242576_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207617"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242576_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207618"
      unitRef="usd">11275</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242576_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207619"
      unitRef="usd">11805</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242576_LG_1_AdditionalIndexMember_3YR"
      id="ixv-44490">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242576_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207620"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242576_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207621"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242576_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207622"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242576_LG_2_AdditionalIndexMember_3YR"
      id="ixv-44507">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242576_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207623"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242576_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207624"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242576_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207625"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242576_ClassMember" id="ixv-44549">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2030 Fund

4.70%

9.17%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242576_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207626"
      unitRef="pure">0.0470</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242576_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207627"
      unitRef="pure">0.0917</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242576_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207628"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242576_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207629"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242576_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207630"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242576_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207631"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242576_ClassMember" id="ixv-44604">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242576_ClassMember" id="ixv-44621">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242576_ClassMember" id="ixv-44625">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242576_ClassMember" id="ixv-44631">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242576_InstantMember"
      decimals="0"
      id="ixv-207632"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242576_InstantMember"
      decimals="INF"
      id="ixv-207633"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242576_ClassMember"
      decimals="0"
      id="ixv-207634"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242576_ClassMember"
      decimals="INF"
      id="ixv-207635"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242576_ClassMember" id="ixv-44706">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242576_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207636"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207637"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207638"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207639"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242576_ClassMember" id="ixv-44797">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242576_TH_0_Member"
      decimals="INF"
      id="ixv-207640"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_TH_1_Member"
      decimals="INF"
      id="ixv-207641"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_TH_2_Member"
      decimals="INF"
      id="ixv-207642"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_TH_3_Member"
      decimals="INF"
      id="ixv-207643"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_TH_4_Member"
      decimals="INF"
      id="ixv-207644"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_TH_5_Member"
      decimals="INF"
      id="ixv-207645"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242576_TH_6_Member"
      decimals="INF"
      id="ixv-207646"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-44938">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250743_ClassMember" id="ixv-44950">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250743_ClassMember" id="ixv-44953">Fidelity&#xae; Sustainable Target Date 2070 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250743_ClassMember" id="ixv-44957">FRCRX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250743_ClassMember" id="ixv-44976">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250743_ClassMember" id="ixv-44978">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250743_ClassMember" id="ixv-44983">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250743_ClassMember" id="ixv-44985">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250743_ClassMember" id="ixv-44988">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250743_ClassMember" id="ixv-44991">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250743_ClassMember" id="ixv-44998">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250743_ClassMember"
      decimals="0"
      id="ixv-207647"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250743_ClassMember"
      decimals="INF"
      id="ixv-207648"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250743_ClassMember" id="ixv-45041">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250743_ClassMember" id="ixv-45047">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250743_ClassMember" id="ixv-45071">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$10,282



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250743_LG_ClassMember_2YR" id="ixv-45090">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250743_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207649"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250743_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207650"
      unitRef="usd">10282</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250743_LG_1_AdditionalIndexMember_2YR"
      id="ixv-45103">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250743_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207651"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250743_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207652"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250743_LG_2_AdditionalIndexMember_2YR"
      id="ixv-45117">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250743_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207653"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250743_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207654"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250743_ClassMember" id="ixv-45152">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250743_InstantMember"
      decimals="0"
      id="ixv-207655"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250743_InstantMember"
      decimals="INF"
      id="ixv-207656"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250743_ClassMember"
      decimals="0"
      id="ixv-207657"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250743_ClassMember"
      decimals="INF"
      id="ixv-207658"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250743_ClassMember" id="ixv-45227">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250743_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207659"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207660"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207661"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207662"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250743_ClassMember" id="ixv-45318">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250743_TH_0_Member"
      decimals="INF"
      id="ixv-207663"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_TH_1_Member"
      decimals="INF"
      id="ixv-207664"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_TH_2_Member"
      decimals="INF"
      id="ixv-207665"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_TH_3_Member"
      decimals="INF"
      id="ixv-207666"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_TH_4_Member"
      decimals="INF"
      id="ixv-207667"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250743_TH_5_Member"
      decimals="INF"
      id="ixv-207668"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-45449">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242533_ClassMember" id="ixv-45453">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242533_ClassMember" id="ixv-45464">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242533_ClassMember" id="ixv-45467">Fidelity Advisor&#xae; Sustainable Target Date 2065 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242533_ClassMember" id="ixv-45471">FTGZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242533_ClassMember" id="ixv-45490">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242533_ClassMember" id="ixv-45492">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242533_ClassMember" id="ixv-45497">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242533_ClassMember" id="ixv-45499">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242533_ClassMember" id="ixv-45502">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242533_ClassMember" id="ixv-45505">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242533_ClassMember" id="ixv-45512">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;101&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242533_ClassMember"
      decimals="0"
      id="ixv-207669"
      unitRef="usd">101</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242533_ClassMember"
      decimals="INF"
      id="ixv-207670"
      unitRef="pure">0.0099</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242533_ClassMember" id="ixv-45554">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242533_ClassMember" id="ixv-45578">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$11,491


$11,983



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242533_LG_ClassMember_3YR" id="ixv-45599">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242533_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207671"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242533_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207672"
      unitRef="usd">11491</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242533_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207673"
      unitRef="usd">11983</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242533_LG_1_AdditionalIndexMember_3YR"
      id="ixv-45616">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242533_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207674"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242533_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207675"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242533_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207676"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242533_LG_2_AdditionalIndexMember_3YR"
      id="ixv-45633">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242533_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207677"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242533_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207678"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242533_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207679"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242533_ClassMember" id="ixv-45675">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.64%

10.04%


Class M (without 3.50% sales charge)

4.29%

12.14%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_ClassMember_1YR"
      decimals="INF"
      id="ixv-207680"
      unitRef="pure">0.0064</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207681"
      unitRef="pure">0.1004</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207682"
      unitRef="pure">0.0429</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207683"
      unitRef="pure">0.1214</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207684"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207685"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207686"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242533_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207687"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242533_ClassMember" id="ixv-45741">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242533_ClassMember" id="ixv-45758">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242533_ClassMember" id="ixv-45762">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242533_ClassMember" id="ixv-45768">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242533_InstantMember"
      decimals="0"
      id="ixv-207688"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242533_InstantMember"
      decimals="INF"
      id="ixv-207689"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242533_ClassMember"
      decimals="0"
      id="ixv-207690"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242533_ClassMember"
      decimals="INF"
      id="ixv-207691"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242533_ClassMember" id="ixv-45843">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242533_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207692"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207693"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207694"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207695"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242533_ClassMember" id="ixv-45934">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242533_TH_0_Member"
      decimals="INF"
      id="ixv-207696"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_TH_1_Member"
      decimals="INF"
      id="ixv-207697"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_TH_2_Member"
      decimals="INF"
      id="ixv-207698"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_TH_3_Member"
      decimals="INF"
      id="ixv-207699"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_TH_4_Member"
      decimals="INF"
      id="ixv-207700"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242533_TH_5_Member"
      decimals="INF"
      id="ixv-207701"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242533_ClassMember" id="ixv-46019">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242533_ClassMember" id="ixv-46025">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242533_ClassMember" id="ixv-46029">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242533_ClassMember" id="ixv-46032">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242533_ClassMember" id="ixv-46036">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242533_ClassMember" id="ixv-46047">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-46105">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242589_ClassMember" id="ixv-46117">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242589_ClassMember" id="ixv-46120">Fidelity Advisor&#xae; Sustainable Target Date 2035 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242589_ClassMember" id="ixv-46124">FSXQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242589_ClassMember" id="ixv-46143">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242589_ClassMember" id="ixv-46145">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242589_ClassMember" id="ixv-46150">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242589_ClassMember" id="ixv-46152">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242589_ClassMember" id="ixv-46155">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242589_ClassMember" id="ixv-46158">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242589_ClassMember" id="ixv-46165">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;48&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.47&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242589_ClassMember"
      decimals="0"
      id="ixv-207702"
      unitRef="usd">48</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242589_ClassMember"
      decimals="INF"
      id="ixv-207703"
      unitRef="pure">0.0047</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242589_ClassMember" id="ixv-46207">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242589_ClassMember" id="ixv-46231">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,549


$12,102



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242589_LG_ClassMember_3YR" id="ixv-46250">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242589_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207704"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242589_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207705"
      unitRef="usd">11549</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242589_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207706"
      unitRef="usd">12102</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242589_LG_1_AdditionalIndexMember_3YR"
      id="ixv-46267">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242589_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207707"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242589_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207708"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242589_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207709"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242589_LG_2_AdditionalIndexMember_3YR"
      id="ixv-46284">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242589_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207710"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242589_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207711"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242589_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207712"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242589_ClassMember" id="ixv-46326">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.79%

10.62%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242589_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207713"
      unitRef="pure">0.0479</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242589_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207714"
      unitRef="pure">0.1062</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242589_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207715"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242589_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207716"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242589_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207717"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242589_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207718"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242589_ClassMember" id="ixv-46381">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242589_ClassMember" id="ixv-46398">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242589_ClassMember" id="ixv-46402">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242589_ClassMember" id="ixv-46408">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242589_InstantMember"
      decimals="0"
      id="ixv-207719"
      unitRef="usd">5343383</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242589_InstantMember"
      decimals="INF"
      id="ixv-207720"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242589_ClassMember"
      decimals="0"
      id="ixv-207721"
      unitRef="usd">17388</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242589_ClassMember"
      decimals="INF"
      id="ixv-207722"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242589_ClassMember" id="ixv-46483">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242589_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207723"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207724"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207725"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207726"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242589_ClassMember" id="ixv-46574">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242589_TH_0_Member"
      decimals="INF"
      id="ixv-207727"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_TH_1_Member"
      decimals="INF"
      id="ixv-207728"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_TH_2_Member"
      decimals="INF"
      id="ixv-207729"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_TH_3_Member"
      decimals="INF"
      id="ixv-207730"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_TH_4_Member"
      decimals="INF"
      id="ixv-207731"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_TH_5_Member"
      decimals="INF"
      id="ixv-207732"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242589_TH_6_Member"
      decimals="INF"
      id="ixv-207733"
      unitRef="pure">0.027</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-46715">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242536_ClassMember" id="ixv-46719">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242536_ClassMember" id="ixv-46730">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242536_ClassMember" id="ixv-46733">Fidelity&#xae; Sustainable Target Date 2010 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242536_ClassMember" id="ixv-46737">FSVMX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242536_ClassMember" id="ixv-46756">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242536_ClassMember" id="ixv-46758">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242536_ClassMember" id="ixv-46763">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242536_ClassMember" id="ixv-46765">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242536_ClassMember" id="ixv-46768">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242536_ClassMember" id="ixv-46771">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242536_ClassMember" id="ixv-46778">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242536_ClassMember"
      decimals="0"
      id="ixv-207734"
      unitRef="usd">22</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242536_ClassMember"
      decimals="INF"
      id="ixv-207735"
      unitRef="pure">0.0021</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242536_ClassMember" id="ixv-46820">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242536_ClassMember" id="ixv-46844">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$10,661


$11,215



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242536_LG_ClassMember_3YR" id="ixv-46863">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242536_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207736"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242536_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207737"
      unitRef="usd">10661</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242536_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207738"
      unitRef="usd">11215</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242536_LG_1_AdditionalIndexMember_3YR"
      id="ixv-46880">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242536_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207739"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242536_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207740"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242536_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207741"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242536_LG_2_AdditionalIndexMember_3YR"
      id="ixv-46897">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242536_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207742"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242536_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207743"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242536_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207744"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242536_ClassMember" id="ixv-46939">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.19%

6.25%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242536_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207745"
      unitRef="pure">0.0519</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242536_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207746"
      unitRef="pure">0.0625</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242536_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207747"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242536_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207748"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242536_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207749"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242536_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207750"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242536_ClassMember" id="ixv-46994">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242536_ClassMember" id="ixv-47011">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242536_ClassMember" id="ixv-47015">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242536_ClassMember" id="ixv-47021">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242536_InstantMember"
      decimals="0"
      id="ixv-207751"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242536_InstantMember"
      decimals="INF"
      id="ixv-207752"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242536_ClassMember"
      decimals="0"
      id="ixv-207753"
      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242536_ClassMember"
      decimals="INF"
      id="ixv-207754"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242536_ClassMember" id="ixv-47096">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242536_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207755"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207756"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207757"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207758"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207759"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242536_ClassMember" id="ixv-47200">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242536_TH_0_Member"
      decimals="INF"
      id="ixv-207760"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_1_Member"
      decimals="INF"
      id="ixv-207761"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_2_Member"
      decimals="INF"
      id="ixv-207762"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_3_Member"
      decimals="INF"
      id="ixv-207763"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_4_Member"
      decimals="INF"
      id="ixv-207764"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_5_Member"
      decimals="INF"
      id="ixv-207765"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_6_Member"
      decimals="INF"
      id="ixv-207766"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_7_Member"
      decimals="INF"
      id="ixv-207767"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242536_TH_8_Member"
      decimals="INF"
      id="ixv-207768"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242536_ClassMember" id="ixv-47315">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242536_ClassMember" id="ixv-47321">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242536_ClassMember" id="ixv-47325">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242536_ClassMember" id="ixv-47328">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242536_ClassMember" id="ixv-47332">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-47398">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242502_ClassMember" id="ixv-47402">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242502_ClassMember" id="ixv-47413">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242502_ClassMember" id="ixv-47416">Fidelity&#xae; Sustainable Target Date 2050 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242502_ClassMember" id="ixv-47420">FSZFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242502_ClassMember" id="ixv-47439">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242502_ClassMember" id="ixv-47441">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242502_ClassMember" id="ixv-47446">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242502_ClassMember" id="ixv-47448">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242502_ClassMember" id="ixv-47451">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242502_ClassMember" id="ixv-47454">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242502_ClassMember" id="ixv-47461">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242502_ClassMember"
      decimals="0"
      id="ixv-207769"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242502_ClassMember"
      decimals="INF"
      id="ixv-207770"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242502_ClassMember" id="ixv-47503">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242502_ClassMember" id="ixv-47527">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,969


$12,562



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242502_LG_ClassMember_3YR" id="ixv-47546">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242502_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207771"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242502_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207772"
      unitRef="usd">11969</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242502_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207773"
      unitRef="usd">12562</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242502_LG_1_AdditionalIndexMember_3YR"
      id="ixv-47563">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242502_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207774"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242502_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207775"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242502_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207776"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242502_LG_2_AdditionalIndexMember_3YR"
      id="ixv-47580">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242502_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207777"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242502_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207778"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242502_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207779"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242502_ClassMember" id="ixv-47622">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.96%

12.83%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242502_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207780"
      unitRef="pure">0.0496</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242502_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207781"
      unitRef="pure">0.1283</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242502_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207782"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242502_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207783"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242502_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207784"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242502_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207785"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242502_ClassMember" id="ixv-47677">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242502_ClassMember" id="ixv-47694">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242502_ClassMember" id="ixv-47698">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242502_ClassMember" id="ixv-47704">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242502_InstantMember"
      decimals="0"
      id="ixv-207786"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242502_InstantMember"
      decimals="INF"
      id="ixv-207787"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242502_ClassMember"
      decimals="0"
      id="ixv-207788"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242502_ClassMember"
      decimals="INF"
      id="ixv-207789"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242502_ClassMember" id="ixv-47779">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242502_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207790"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207791"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207792"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207793"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242502_ClassMember" id="ixv-47870">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242502_TH_0_Member"
      decimals="INF"
      id="ixv-207794"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_TH_1_Member"
      decimals="INF"
      id="ixv-207795"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_TH_2_Member"
      decimals="INF"
      id="ixv-207796"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_TH_3_Member"
      decimals="INF"
      id="ixv-207797"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_TH_4_Member"
      decimals="INF"
      id="ixv-207798"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242502_TH_5_Member"
      decimals="INF"
      id="ixv-207799"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242502_ClassMember" id="ixv-47955">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242502_ClassMember" id="ixv-47961">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242502_ClassMember" id="ixv-47965">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242502_ClassMember" id="ixv-47968">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242502_ClassMember" id="ixv-47972">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242502_ClassMember" id="ixv-47983">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-48041">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242510_ClassMember" id="ixv-48045">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242510_ClassMember" id="ixv-48056">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242510_ClassMember" id="ixv-48059">Fidelity Advisor&#xae; Sustainable Target Date 2055 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242510_ClassMember" id="ixv-48063">FSZLX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242510_ClassMember" id="ixv-48082">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242510_ClassMember" id="ixv-48084">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242510_ClassMember" id="ixv-48089">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242510_ClassMember" id="ixv-48091">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242510_ClassMember" id="ixv-48094">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242510_ClassMember" id="ixv-48097">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242510_ClassMember" id="ixv-48104">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;101&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242510_ClassMember"
      decimals="0"
      id="ixv-207800"
      unitRef="usd">101</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242510_ClassMember"
      decimals="INF"
      id="ixv-207801"
      unitRef="pure">0.0099</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242510_ClassMember" id="ixv-48146">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242510_ClassMember" id="ixv-48170">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$11,490


$11,990



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242510_LG_ClassMember_3YR" id="ixv-48191">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242510_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207802"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242510_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207803"
      unitRef="usd">11490</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242510_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207804"
      unitRef="usd">11990</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242510_LG_1_AdditionalIndexMember_3YR"
      id="ixv-48208">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242510_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207805"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242510_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207806"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242510_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207807"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242510_LG_2_AdditionalIndexMember_3YR"
      id="ixv-48225">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242510_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207808"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242510_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207809"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242510_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207810"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242510_ClassMember" id="ixv-48267">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.71%

10.08%


Class M (without 3.50% sales charge)

4.36%

12.17%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_ClassMember_1YR"
      decimals="INF"
      id="ixv-207811"
      unitRef="pure">0.0071</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207812"
      unitRef="pure">0.1008</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207813"
      unitRef="pure">0.0436</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207814"
      unitRef="pure">0.1217</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207815"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207816"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207817"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242510_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207818"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242510_ClassMember" id="ixv-48333">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242510_ClassMember" id="ixv-48350">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242510_ClassMember" id="ixv-48354">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242510_ClassMember" id="ixv-48360">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242510_InstantMember"
      decimals="0"
      id="ixv-207819"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242510_InstantMember"
      decimals="INF"
      id="ixv-207820"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242510_ClassMember"
      decimals="0"
      id="ixv-207821"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242510_ClassMember"
      decimals="INF"
      id="ixv-207822"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242510_ClassMember" id="ixv-48435">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242510_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207823"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207824"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207825"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207826"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242510_ClassMember" id="ixv-48526">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242510_TH_0_Member"
      decimals="INF"
      id="ixv-207827"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_TH_1_Member"
      decimals="INF"
      id="ixv-207828"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_TH_2_Member"
      decimals="INF"
      id="ixv-207829"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_TH_3_Member"
      decimals="INF"
      id="ixv-207830"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_TH_4_Member"
      decimals="INF"
      id="ixv-207831"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242510_TH_5_Member"
      decimals="INF"
      id="ixv-207832"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242510_ClassMember" id="ixv-48611">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242510_ClassMember" id="ixv-48617">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242510_ClassMember" id="ixv-48621">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242510_ClassMember" id="ixv-48624">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242510_ClassMember" id="ixv-48628">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242510_ClassMember" id="ixv-48639">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-48697">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242578_ClassMember" id="ixv-48709">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242578_ClassMember" id="ixv-48712">Fidelity Advisor&#xae; Sustainable Target Date 2030 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242578_ClassMember" id="ixv-48716">FSXDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242578_ClassMember" id="ixv-48735">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242578_ClassMember" id="ixv-48737">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242578_ClassMember" id="ixv-48742">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242578_ClassMember" id="ixv-48744">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242578_ClassMember" id="ixv-48747">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242578_ClassMember" id="ixv-48750">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242578_ClassMember" id="ixv-48757">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.97&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242578_ClassMember"
      decimals="0"
      id="ixv-207833"
      unitRef="usd">99</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242578_ClassMember"
      decimals="INF"
      id="ixv-207834"
      unitRef="pure">0.0097</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242578_ClassMember" id="ixv-48799">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242578_ClassMember" id="ixv-48823">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$10,828


$11,282



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242578_LG_ClassMember_3YR" id="ixv-48844">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242578_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207835"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242578_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207836"
      unitRef="usd">10828</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242578_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207837"
      unitRef="usd">11282</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242578_LG_1_AdditionalIndexMember_3YR"
      id="ixv-48861">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242578_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207838"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242578_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207839"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242578_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207840"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242578_LG_2_AdditionalIndexMember_3YR"
      id="ixv-48878">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242578_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207841"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242578_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207842"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242578_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207843"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242578_ClassMember" id="ixv-48920">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.55%

6.59%


Class M (without 3.50% sales charge)

4.19%

8.62%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_ClassMember_1YR"
      decimals="INF"
      id="ixv-207844"
      unitRef="pure">0.0055</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207845"
      unitRef="pure">0.0659</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207846"
      unitRef="pure">0.0419</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207847"
      unitRef="pure">0.0862</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207848"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207849"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207850"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242578_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207851"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242578_ClassMember" id="ixv-48986">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242578_ClassMember" id="ixv-49003">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242578_ClassMember" id="ixv-49007">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242578_ClassMember" id="ixv-49013">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242578_InstantMember"
      decimals="0"
      id="ixv-207852"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242578_InstantMember"
      decimals="INF"
      id="ixv-207853"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242578_ClassMember"
      decimals="0"
      id="ixv-207854"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242578_ClassMember"
      decimals="INF"
      id="ixv-207855"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242578_ClassMember" id="ixv-49088">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242578_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207856"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207857"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207858"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207859"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242578_ClassMember" id="ixv-49179">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242578_TH_0_Member"
      decimals="INF"
      id="ixv-207860"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_TH_1_Member"
      decimals="INF"
      id="ixv-207861"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_TH_2_Member"
      decimals="INF"
      id="ixv-207862"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_TH_3_Member"
      decimals="INF"
      id="ixv-207863"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_TH_4_Member"
      decimals="INF"
      id="ixv-207864"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_TH_5_Member"
      decimals="INF"
      id="ixv-207865"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242578_TH_6_Member"
      decimals="INF"
      id="ixv-207866"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-49320">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250744_ClassMember" id="ixv-49332">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250744_ClassMember" id="ixv-49335">Fidelity Advisor&#xae; Sustainable Target Date 2070 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250744_ClassMember" id="ixv-49339">FRCYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250744_ClassMember" id="ixv-49358">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250744_ClassMember" id="ixv-49360">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250744_ClassMember" id="ixv-49365">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250744_ClassMember" id="ixv-49367">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250744_ClassMember" id="ixv-49370">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250744_ClassMember" id="ixv-49373">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250744_ClassMember" id="ixv-49380">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;76&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250744_ClassMember"
      decimals="0"
      id="ixv-207867"
      unitRef="usd">76</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250744_ClassMember"
      decimals="INF"
      id="ixv-207868"
      unitRef="pure">0.0099</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250744_ClassMember" id="ixv-49423">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250744_ClassMember" id="ixv-49429">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250744_ClassMember" id="ixv-49453">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$9,882



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250744_LG_ClassMember_2YR" id="ixv-49474">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250744_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207869"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250744_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207870"
      unitRef="usd">9882</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250744_LG_1_AdditionalIndexMember_2YR"
      id="ixv-49487">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250744_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207871"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250744_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207872"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250744_LG_2_AdditionalIndexMember_2YR"
      id="ixv-49501">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250744_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207873"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250744_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207874"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250744_ClassMember" id="ixv-49536">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250744_InstantMember"
      decimals="0"
      id="ixv-207875"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250744_InstantMember"
      decimals="INF"
      id="ixv-207876"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250744_ClassMember"
      decimals="0"
      id="ixv-207877"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250744_ClassMember"
      decimals="INF"
      id="ixv-207878"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250744_ClassMember" id="ixv-49611">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250744_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207879"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207880"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207881"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207882"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250744_ClassMember" id="ixv-49702">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250744_TH_0_Member"
      decimals="INF"
      id="ixv-207883"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_TH_1_Member"
      decimals="INF"
      id="ixv-207884"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_TH_2_Member"
      decimals="INF"
      id="ixv-207885"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_TH_3_Member"
      decimals="INF"
      id="ixv-207886"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_TH_4_Member"
      decimals="INF"
      id="ixv-207887"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250744_TH_5_Member"
      decimals="INF"
      id="ixv-207888"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-49833">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242497_ClassMember" id="ixv-49845">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242497_ClassMember" id="ixv-49848">Fidelity Advisor&#xae; Sustainable Target Date Income Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242497_ClassMember" id="ixv-49852">FSUHX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242497_ClassMember" id="ixv-49871">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242497_ClassMember" id="ixv-49873">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242497_ClassMember" id="ixv-49878">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242497_ClassMember" id="ixv-49880">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242497_ClassMember" id="ixv-49883">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242497_ClassMember" id="ixv-49886">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242497_ClassMember" id="ixv-49893">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;93&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.91&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242497_ClassMember"
      decimals="0"
      id="ixv-207889"
      unitRef="usd">93</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242497_ClassMember"
      decimals="INF"
      id="ixv-207890"
      unitRef="pure">0.0091</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242497_ClassMember" id="ixv-49935">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242497_ClassMember" id="ixv-49959">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$10,079


$10,531



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242497_LG_ClassMember_3YR" id="ixv-49980">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242497_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207891"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242497_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207892"
      unitRef="usd">10079</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242497_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207893"
      unitRef="usd">10531</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242497_LG_1_AdditionalIndexMember_3YR"
      id="ixv-49997">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242497_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207894"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242497_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207895"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242497_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207896"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242497_LG_2_AdditionalIndexMember_3YR"
      id="ixv-50014">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242497_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207897"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242497_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207898"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242497_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207899"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242497_ClassMember" id="ixv-50056">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.82%

2.78%


Class M (without 3.50% sales charge)

4.48%

4.73%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_ClassMember_1YR"
      decimals="INF"
      id="ixv-207900"
      unitRef="pure">0.0082</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207901"
      unitRef="pure">0.0278</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207902"
      unitRef="pure">0.0448</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207903"
      unitRef="pure">0.0473</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207904"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207905"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207906"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242497_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207907"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242497_ClassMember" id="ixv-50122">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242497_ClassMember" id="ixv-50139">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242497_ClassMember" id="ixv-50143">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242497_ClassMember" id="ixv-50149">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242497_InstantMember"
      decimals="0"
      id="ixv-207908"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242497_InstantMember"
      decimals="INF"
      id="ixv-207909"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242497_ClassMember"
      decimals="0"
      id="ixv-207910"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242497_ClassMember"
      decimals="INF"
      id="ixv-207911"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242497_ClassMember" id="ixv-50224">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242497_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207912"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207913"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207914"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207915"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207916"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242497_ClassMember" id="ixv-50328">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242497_TH_0_Member"
      decimals="INF"
      id="ixv-207917"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_1_Member"
      decimals="INF"
      id="ixv-207918"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_2_Member"
      decimals="INF"
      id="ixv-207919"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_3_Member"
      decimals="INF"
      id="ixv-207920"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_4_Member"
      decimals="INF"
      id="ixv-207921"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_5_Member"
      decimals="INF"
      id="ixv-207922"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_6_Member"
      decimals="INF"
      id="ixv-207923"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_7_Member"
      decimals="INF"
      id="ixv-207924"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242497_TH_8_Member"
      decimals="INF"
      id="ixv-207925"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-50489">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242558_ClassMember" id="ixv-50501">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242558_ClassMember" id="ixv-50504">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242558_ClassMember" id="ixv-50508">FSWDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242558_ClassMember" id="ixv-50527">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242558_ClassMember" id="ixv-50529">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242558_ClassMember" id="ixv-50534">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242558_ClassMember" id="ixv-50536">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242558_ClassMember" id="ixv-50539">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242558_ClassMember" id="ixv-50542">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242558_ClassMember" id="ixv-50549">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2020 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;44&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.43&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242558_ClassMember"
      decimals="0"
      id="ixv-207926"
      unitRef="usd">44</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242558_ClassMember"
      decimals="INF"
      id="ixv-207927"
      unitRef="pure">0.0043</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242558_ClassMember" id="ixv-50591">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242558_ClassMember" id="ixv-50615">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2020 Fund


$10,000

$10,959


$11,498



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242558_LG_ClassMember_3YR" id="ixv-50634">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2020 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242558_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207928"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242558_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207929"
      unitRef="usd">10959</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242558_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207930"
      unitRef="usd">11498</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242558_LG_1_AdditionalIndexMember_3YR"
      id="ixv-50651">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242558_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207931"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242558_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207932"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242558_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207933"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242558_LG_2_AdditionalIndexMember_3YR"
      id="ixv-50668">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242558_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207934"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242558_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207935"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242558_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207936"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242558_ClassMember" id="ixv-50710">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2020 Fund

4.92%

7.66%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242558_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207937"
      unitRef="pure">0.0492</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242558_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207938"
      unitRef="pure">0.0766</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242558_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207939"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242558_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207940"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242558_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207941"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242558_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207942"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242558_ClassMember" id="ixv-50765">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242558_ClassMember" id="ixv-50782">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242558_ClassMember" id="ixv-50786">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242558_ClassMember" id="ixv-50792">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242558_InstantMember"
      decimals="0"
      id="ixv-207943"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242558_InstantMember"
      decimals="INF"
      id="ixv-207944"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242558_ClassMember"
      decimals="0"
      id="ixv-207945"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242558_ClassMember"
      decimals="INF"
      id="ixv-207946"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242558_ClassMember" id="ixv-50867">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242558_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207947"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207948"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207949"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207950"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207951"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242558_ClassMember" id="ixv-50971">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242558_TH_0_Member"
      decimals="INF"
      id="ixv-207952"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_1_Member"
      decimals="INF"
      id="ixv-207953"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_2_Member"
      decimals="INF"
      id="ixv-207954"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_3_Member"
      decimals="INF"
      id="ixv-207955"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_4_Member"
      decimals="INF"
      id="ixv-207956"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_5_Member"
      decimals="INF"
      id="ixv-207957"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_6_Member"
      decimals="INF"
      id="ixv-207958"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_7_Member"
      decimals="INF"
      id="ixv-207959"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242558_TH_8_Member"
      decimals="INF"
      id="ixv-207960"
      unitRef="pure">0.001</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-51132">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242552_ClassMember" id="ixv-51144">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242552_ClassMember" id="ixv-51147">Fidelity Advisor&#xae; Sustainable Target Date 2015 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242552_ClassMember" id="ixv-51151">FSVOX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242552_ClassMember" id="ixv-51170">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242552_ClassMember" id="ixv-51172">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242552_ClassMember" id="ixv-51177">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242552_ClassMember" id="ixv-51179">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242552_ClassMember" id="ixv-51182">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242552_ClassMember" id="ixv-51185">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242552_ClassMember" id="ixv-51192">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;69&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.68&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242552_ClassMember"
      decimals="0"
      id="ixv-207961"
      unitRef="usd">69</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242552_ClassMember"
      decimals="INF"
      id="ixv-207962"
      unitRef="pure">0.0068</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242552_ClassMember" id="ixv-51234">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242552_ClassMember" id="ixv-51258">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$10,157


$10,637



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242552_LG_ClassMember_3YR" id="ixv-51279">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242552_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-207963"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242552_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-207964"
      unitRef="usd">10157</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242552_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-207965"
      unitRef="usd">10637</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242552_LG_1_AdditionalIndexMember_3YR"
      id="ixv-51296">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242552_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207966"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242552_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207967"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242552_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207968"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242552_LG_2_AdditionalIndexMember_3YR"
      id="ixv-51313">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242552_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-207969"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242552_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-207970"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242552_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-207971"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242552_ClassMember" id="ixv-51355">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.29%

3.32%


Class A (without 5.75% sales charge)

4.73%

6.61%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_ClassMember_1YR"
      decimals="INF"
      id="ixv-207972"
      unitRef="pure">-0.0129</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207973"
      unitRef="pure">0.0332</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-207974"
      unitRef="pure">0.0473</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-207975"
      unitRef="pure">0.0661</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-207976"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-207977"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-207978"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242552_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-207979"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242552_ClassMember" id="ixv-51422">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242552_ClassMember" id="ixv-51439">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242552_ClassMember" id="ixv-51443">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242552_ClassMember" id="ixv-51449">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242552_InstantMember"
      decimals="0"
      id="ixv-207980"
      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242552_InstantMember"
      decimals="INF"
      id="ixv-207981"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242552_ClassMember"
      decimals="0"
      id="ixv-207982"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242552_ClassMember"
      decimals="INF"
      id="ixv-207983"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242552_ClassMember" id="ixv-51524">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242552_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-207984"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-207985"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-207986"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-207987"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-207988"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242552_ClassMember" id="ixv-51628">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242552_TH_0_Member"
      decimals="INF"
      id="ixv-207989"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_1_Member"
      decimals="INF"
      id="ixv-207990"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_2_Member"
      decimals="INF"
      id="ixv-207991"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_3_Member"
      decimals="INF"
      id="ixv-207992"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_4_Member"
      decimals="INF"
      id="ixv-207993"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_5_Member"
      decimals="INF"
      id="ixv-207994"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_6_Member"
      decimals="INF"
      id="ixv-207995"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_7_Member"
      decimals="INF"
      id="ixv-207996"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242552_TH_8_Member"
      decimals="INF"
      id="ixv-207997"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-51789">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242506_ClassMember" id="ixv-51793">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242506_ClassMember" id="ixv-51804">Fidelity&#xae; Sustainable Target Date 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242506_ClassMember" id="ixv-51807">Fidelity Advisor&#xae; Sustainable Target Date 2050 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242506_ClassMember" id="ixv-51811">FSYZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242506_ClassMember" id="ixv-51830">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242506_ClassMember" id="ixv-51832">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242506_ClassMember" id="ixv-51837">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242506_ClassMember" id="ixv-51839">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242506_ClassMember" id="ixv-51842">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242506_ClassMember" id="ixv-51845">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242506_ClassMember" id="ixv-51852">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;152&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242506_ClassMember"
      decimals="0"
      id="ixv-207998"
      unitRef="usd">152</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242506_ClassMember"
      decimals="INF"
      id="ixv-207999"
      unitRef="pure">0.0149</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242506_ClassMember" id="ixv-51894">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242506_ClassMember" id="ixv-51918">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,852


$12,299



Fidelity Sustainable Target Date 2050 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242506_LG_ClassMember_3YR" id="ixv-51937">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242506_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208000"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242506_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208001"
      unitRef="usd">11852</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242506_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208002"
      unitRef="usd">12299</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242506_LG_1_AdditionalIndexMember_3YR"
      id="ixv-51954">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242506_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208003"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242506_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208004"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242506_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208005"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242506_LG_2_AdditionalIndexMember_3YR"
      id="ixv-51971">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242506_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208006"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242506_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208007"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242506_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208008"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242506_ClassMember" id="ixv-52013">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.77%

11.57%


Class C

3.77%

11.57%


Fidelity Sustainable Target Date 2050 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_ClassMember_1YR"
      decimals="INF"
      id="ixv-208009"
      unitRef="pure">0.0277</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208010"
      unitRef="pure">0.1157</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208011"
      unitRef="pure">0.0377</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208012"
      unitRef="pure">0.1157</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208013"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208014"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208015"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242506_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208016"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242506_ClassMember" id="ixv-52080">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242506_ClassMember" id="ixv-52097">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242506_ClassMember" id="ixv-52101">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242506_ClassMember" id="ixv-52107">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,617,498&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,301&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242506_InstantMember"
      decimals="0"
      id="ixv-208017"
      unitRef="usd">7617498</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242506_InstantMember"
      decimals="INF"
      id="ixv-208018"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242506_ClassMember"
      decimals="0"
      id="ixv-208019"
      unitRef="usd">25301</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242506_ClassMember"
      decimals="INF"
      id="ixv-208020"
      unitRef="pure">0.21</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242506_ClassMember" id="ixv-52182">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242506_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208021"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208022"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208023"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208024"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242506_ClassMember" id="ixv-52273">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242506_TH_0_Member"
      decimals="INF"
      id="ixv-208025"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_TH_1_Member"
      decimals="INF"
      id="ixv-208026"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_TH_2_Member"
      decimals="INF"
      id="ixv-208027"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_TH_3_Member"
      decimals="INF"
      id="ixv-208028"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_TH_4_Member"
      decimals="INF"
      id="ixv-208029"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242506_TH_5_Member"
      decimals="INF"
      id="ixv-208030"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242506_ClassMember" id="ixv-52358">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242506_ClassMember" id="ixv-52364">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242506_ClassMember" id="ixv-52368">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242506_ClassMember" id="ixv-52371">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242506_ClassMember" id="ixv-52375">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242506_ClassMember" id="ixv-52386">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-52444">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242515_ClassMember" id="ixv-52448">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242515_ClassMember" id="ixv-52459">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242515_ClassMember" id="ixv-52462">Fidelity&#xae; Sustainable Target Date 2055 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242515_ClassMember" id="ixv-52466">FSZQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242515_ClassMember" id="ixv-52485">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242515_ClassMember" id="ixv-52487">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242515_ClassMember" id="ixv-52492">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242515_ClassMember" id="ixv-52494">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242515_ClassMember" id="ixv-52497">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242515_ClassMember" id="ixv-52500">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242515_ClassMember" id="ixv-52507">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242515_ClassMember"
      decimals="0"
      id="ixv-208031"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242515_ClassMember"
      decimals="INF"
      id="ixv-208032"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242515_ClassMember" id="ixv-52549">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242515_ClassMember" id="ixv-52573">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,966


$12,562



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242515_LG_ClassMember_3YR" id="ixv-52592">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242515_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208033"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242515_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208034"
      unitRef="usd">11966</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242515_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208035"
      unitRef="usd">12562</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242515_LG_1_AdditionalIndexMember_3YR"
      id="ixv-52609">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242515_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208036"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242515_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208037"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242515_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208038"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242515_LG_2_AdditionalIndexMember_3YR"
      id="ixv-52626">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242515_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208039"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242515_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208040"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242515_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208041"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242515_ClassMember" id="ixv-52668">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.98%

12.82%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242515_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208042"
      unitRef="pure">0.0498</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242515_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208043"
      unitRef="pure">0.1282</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242515_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208044"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242515_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208045"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242515_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208046"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242515_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208047"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242515_ClassMember" id="ixv-52723">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242515_ClassMember" id="ixv-52740">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242515_ClassMember" id="ixv-52744">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242515_ClassMember" id="ixv-52750">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242515_InstantMember"
      decimals="0"
      id="ixv-208048"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242515_InstantMember"
      decimals="INF"
      id="ixv-208049"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242515_ClassMember"
      decimals="0"
      id="ixv-208050"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242515_ClassMember"
      decimals="INF"
      id="ixv-208051"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242515_ClassMember" id="ixv-52825">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242515_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208052"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208053"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208054"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208055"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242515_ClassMember" id="ixv-52916">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242515_TH_0_Member"
      decimals="INF"
      id="ixv-208056"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_TH_1_Member"
      decimals="INF"
      id="ixv-208057"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_TH_2_Member"
      decimals="INF"
      id="ixv-208058"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_TH_3_Member"
      decimals="INF"
      id="ixv-208059"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_TH_4_Member"
      decimals="INF"
      id="ixv-208060"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242515_TH_5_Member"
      decimals="INF"
      id="ixv-208061"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242515_ClassMember" id="ixv-53001">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242515_ClassMember" id="ixv-53007">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242515_ClassMember" id="ixv-53011">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242515_ClassMember" id="ixv-53014">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242515_ClassMember" id="ixv-53018">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242515_ClassMember" id="ixv-53029">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-53087">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242581_ClassMember" id="ixv-53091">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242581_ClassMember" id="ixv-53102">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242581_ClassMember" id="ixv-53105">Fidelity&#xae; Sustainable Target Date 2035 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242581_ClassMember" id="ixv-53109">FSXUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242581_ClassMember" id="ixv-53128">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242581_ClassMember" id="ixv-53130">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242581_ClassMember" id="ixv-53135">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242581_ClassMember" id="ixv-53137">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242581_ClassMember" id="ixv-53140">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242581_ClassMember" id="ixv-53143">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242581_ClassMember" id="ixv-53150">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.27&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242581_ClassMember"
      decimals="0"
      id="ixv-208062"
      unitRef="usd">28</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242581_ClassMember"
      decimals="INF"
      id="ixv-208063"
      unitRef="pure">0.0027</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242581_ClassMember" id="ixv-53192">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242581_ClassMember" id="ixv-53216">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,573


$12,155



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242581_LG_ClassMember_3YR" id="ixv-53235">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242581_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208064"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242581_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208065"
      unitRef="usd">11573</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242581_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208066"
      unitRef="usd">12155</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242581_LG_1_AdditionalIndexMember_3YR"
      id="ixv-53252">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242581_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208067"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242581_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208068"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242581_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208069"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242581_LG_2_AdditionalIndexMember_3YR"
      id="ixv-53269">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242581_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208070"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242581_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208071"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242581_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208072"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242581_ClassMember" id="ixv-53311">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.03%

10.88%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242581_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208073"
      unitRef="pure">0.0503</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242581_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208074"
      unitRef="pure">0.1088</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242581_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208075"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242581_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208076"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242581_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208077"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242581_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208078"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242581_ClassMember" id="ixv-53366">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242581_ClassMember" id="ixv-53383">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242581_ClassMember" id="ixv-53387">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242581_ClassMember" id="ixv-53393">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242581_InstantMember"
      decimals="0"
      id="ixv-208079"
      unitRef="usd">5343383</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242581_InstantMember"
      decimals="INF"
      id="ixv-208080"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242581_ClassMember"
      decimals="0"
      id="ixv-208081"
      unitRef="usd">17388</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242581_ClassMember"
      decimals="INF"
      id="ixv-208082"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242581_ClassMember" id="ixv-53468">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242581_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208083"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208084"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208085"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208086"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242581_ClassMember" id="ixv-53559">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242581_TH_0_Member"
      decimals="INF"
      id="ixv-208087"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_TH_1_Member"
      decimals="INF"
      id="ixv-208088"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_TH_2_Member"
      decimals="INF"
      id="ixv-208089"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_TH_3_Member"
      decimals="INF"
      id="ixv-208090"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_TH_4_Member"
      decimals="INF"
      id="ixv-208091"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_TH_5_Member"
      decimals="INF"
      id="ixv-208092"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242581_TH_6_Member"
      decimals="INF"
      id="ixv-208093"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242581_ClassMember" id="ixv-53654">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242581_ClassMember" id="ixv-53660">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242581_ClassMember" id="ixv-53664">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242581_ClassMember" id="ixv-53667">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242581_ClassMember" id="ixv-53671">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-53737">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242597_ClassMember" id="ixv-53749">Fidelity&#xae; Sustainable Target Date 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242597_ClassMember" id="ixv-53752">Fidelity Advisor&#xae; Sustainable Target Date 2040 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242597_ClassMember" id="ixv-53756">FSXWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242597_ClassMember" id="ixv-53775">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242597_ClassMember" id="ixv-53777">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242597_ClassMember" id="ixv-53782">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242597_ClassMember" id="ixv-53784">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242597_ClassMember" id="ixv-53787">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242597_ClassMember" id="ixv-53790">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242597_ClassMember" id="ixv-53797">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;75&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.73&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242597_ClassMember"
      decimals="0"
      id="ixv-208094"
      unitRef="usd">75</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242597_ClassMember"
      decimals="INF"
      id="ixv-208095"
      unitRef="pure">0.0073</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242597_ClassMember" id="ixv-53839">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242597_ClassMember" id="ixv-53863">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$11,151


$11,665



Fidelity Sustainable Target Date 2040 Composite Index&#x2120;


$10,000

$11,756


$12,470



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242597_LG_ClassMember_3YR" id="ixv-53884">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242597_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208096"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242597_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208097"
      unitRef="usd">11151</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242597_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208098"
      unitRef="usd">11665</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242597_LG_1_AdditionalIndexMember_3YR"
      id="ixv-53901">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242597_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208099"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242597_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208100"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242597_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208101"
      unitRef="usd">12470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242597_LG_2_AdditionalIndexMember_3YR"
      id="ixv-53918">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242597_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208102"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242597_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208103"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242597_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208104"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242597_ClassMember" id="ixv-53960">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.41%

8.49%


Class A (without 5.75% sales charge)

4.61%

11.94%


Fidelity Sustainable Target Date 2040 Composite Index&#x2120;

6.07%


12.39%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_ClassMember_1YR"
      decimals="INF"
      id="ixv-208105"
      unitRef="pure">-0.0141</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208106"
      unitRef="pure">0.0849</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208107"
      unitRef="pure">0.0461</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208108"
      unitRef="pure">0.1194</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208109"
      unitRef="pure">0.0607</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208110"
      unitRef="pure">0.1239</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208111"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242597_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208112"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242597_ClassMember" id="ixv-54027">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242597_ClassMember" id="ixv-54044">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242597_ClassMember" id="ixv-54048">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242597_ClassMember" id="ixv-54054">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,752,032&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;25,445&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242597_InstantMember"
      decimals="0"
      id="ixv-208113"
      unitRef="usd">7752032</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242597_InstantMember"
      decimals="INF"
      id="ixv-208114"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242597_ClassMember"
      decimals="0"
      id="ixv-208115"
      unitRef="usd">25445</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242597_ClassMember"
      decimals="INF"
      id="ixv-208116"
      unitRef="pure">0.26</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242597_ClassMember" id="ixv-54129">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.0


International Equity Funds

38.5


Bond Funds

14.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 47.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 14.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242597_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208117"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208118"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208119"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208120"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242597_ClassMember" id="ixv-54220">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

47.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

26.5


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.7


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

4.5


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

0.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242597_TH_0_Member"
      decimals="INF"
      id="ixv-208121"
      unitRef="pure">0.470</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_TH_1_Member"
      decimals="INF"
      id="ixv-208122"
      unitRef="pure">0.265</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_TH_2_Member"
      decimals="INF"
      id="ixv-208123"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_TH_3_Member"
      decimals="INF"
      id="ixv-208124"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_TH_4_Member"
      decimals="INF"
      id="ixv-208125"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_TH_5_Member"
      decimals="INF"
      id="ixv-208126"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242597_TH_6_Member"
      decimals="INF"
      id="ixv-208127"
      unitRef="pure">0.009</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-54361">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242543_ClassMember" id="ixv-54373">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242543_ClassMember" id="ixv-54376">Fidelity Advisor&#xae; Sustainable Target Date 2010 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242543_ClassMember" id="ixv-54380">FSUZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242543_ClassMember" id="ixv-54399">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242543_ClassMember" id="ixv-54401">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242543_ClassMember" id="ixv-54406">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242543_ClassMember" id="ixv-54408">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242543_ClassMember" id="ixv-54411">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242543_ClassMember" id="ixv-54414">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242543_ClassMember" id="ixv-54421">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;68&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.66&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242543_ClassMember"
      decimals="0"
      id="ixv-208128"
      unitRef="usd">68</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242543_ClassMember"
      decimals="INF"
      id="ixv-208129"
      unitRef="pure">0.0066</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242543_ClassMember" id="ixv-54463">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242543_ClassMember" id="ixv-54487">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$10,002


$10,489



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242543_LG_ClassMember_3YR" id="ixv-54508">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242543_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208130"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242543_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208131"
      unitRef="usd">10002</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242543_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208132"
      unitRef="usd">10489</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242543_LG_1_AdditionalIndexMember_3YR"
      id="ixv-54525">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242543_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208133"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242543_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208134"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242543_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208135"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242543_LG_2_AdditionalIndexMember_3YR"
      id="ixv-54542">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242543_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208136"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242543_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208137"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242543_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208138"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242543_ClassMember" id="ixv-54584">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class A (incl. 5.75% sales charge) &#160;

-1.16%

2.56%


Class A (without 5.75% sales charge)

4.87%

5.82%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_ClassMember_1YR"
      decimals="INF"
      id="ixv-208139"
      unitRef="pure">-0.0116</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208140"
      unitRef="pure">0.0256</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208141"
      unitRef="pure">0.0487</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208142"
      unitRef="pure">0.0582</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208143"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208144"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208145"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242543_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208146"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242543_ClassMember" id="ixv-54651">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242543_ClassMember" id="ixv-54668">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242543_ClassMember" id="ixv-54672">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242543_ClassMember" id="ixv-54678">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
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      decimals="0"
      id="ixv-208147"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
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      id="ixv-208148"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      decimals="0"
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      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
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      decimals="INF"
      id="ixv-208150"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242543_ClassMember" id="ixv-54753">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-208151"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208152"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208153"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208154"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208155"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242543_ClassMember" id="ixv-54857">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242543_TH_0_Member"
      decimals="INF"
      id="ixv-208156"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_1_Member"
      decimals="INF"
      id="ixv-208157"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_2_Member"
      decimals="INF"
      id="ixv-208158"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_3_Member"
      decimals="INF"
      id="ixv-208159"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_4_Member"
      decimals="INF"
      id="ixv-208160"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_5_Member"
      decimals="INF"
      id="ixv-208161"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_6_Member"
      decimals="INF"
      id="ixv-208162"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_7_Member"
      decimals="INF"
      id="ixv-208163"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242543_TH_8_Member"
      decimals="INF"
      id="ixv-208164"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-55018">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250747_ClassMember" id="ixv-55030">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250747_ClassMember" id="ixv-55033">Fidelity Advisor&#xae; Sustainable Target Date 2070 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250747_ClassMember" id="ixv-55037">FRDCX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250747_ClassMember" id="ixv-55056">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250747_ClassMember" id="ixv-55058">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250747_ClassMember" id="ixv-55063">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250747_ClassMember" id="ixv-55065">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250747_ClassMember" id="ixv-55068">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250747_ClassMember" id="ixv-55071">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250747_ClassMember" id="ixv-55078">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;114&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250747_ClassMember"
      decimals="0"
      id="ixv-208165"
      unitRef="usd">114</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250747_ClassMember"
      decimals="INF"
      id="ixv-208166"
      unitRef="pure">0.0149</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250747_ClassMember" id="ixv-55121">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250747_ClassMember" id="ixv-55127">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250747_ClassMember" id="ixv-55151">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000. Share class performance includes contingent deferred sales charges in the past one year.
Class C


$10,000

$10,104



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250747_LG_ClassMember_2YR" id="ixv-55170">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250747_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208167"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250747_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208168"
      unitRef="usd">10104</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250747_LG_1_AdditionalIndexMember_2YR"
      id="ixv-55183">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250747_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208169"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250747_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208170"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250747_LG_2_AdditionalIndexMember_2YR"
      id="ixv-55197">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250747_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208171"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250747_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208172"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250747_ClassMember" id="ixv-55232">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250747_InstantMember"
      decimals="0"
      id="ixv-208173"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250747_InstantMember"
      decimals="INF"
      id="ixv-208174"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250747_ClassMember"
      decimals="0"
      id="ixv-208175"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250747_ClassMember"
      decimals="INF"
      id="ixv-208176"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250747_ClassMember" id="ixv-55307">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250747_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208177"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208178"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208179"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208180"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250747_ClassMember" id="ixv-55398">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250747_TH_0_Member"
      decimals="INF"
      id="ixv-208181"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_TH_1_Member"
      decimals="INF"
      id="ixv-208182"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_TH_2_Member"
      decimals="INF"
      id="ixv-208183"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_TH_3_Member"
      decimals="INF"
      id="ixv-208184"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_TH_4_Member"
      decimals="INF"
      id="ixv-208185"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250747_TH_5_Member"
      decimals="INF"
      id="ixv-208186"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-55529">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242572_ClassMember" id="ixv-55533">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242572_ClassMember" id="ixv-55544">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242572_ClassMember" id="ixv-55547">Fidelity&#xae; Sustainable Target Date 2030 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242572_ClassMember" id="ixv-55551">FSXJX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242572_ClassMember" id="ixv-55570">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242572_ClassMember" id="ixv-55572">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242572_ClassMember" id="ixv-55577">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242572_ClassMember" id="ixv-55579">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242572_ClassMember" id="ixv-55582">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242572_ClassMember" id="ixv-55585">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242572_ClassMember" id="ixv-55592">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;27&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242572_ClassMember"
      decimals="0"
      id="ixv-208187"
      unitRef="usd">27</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242572_ClassMember"
      decimals="INF"
      id="ixv-208188"
      unitRef="pure">0.0026</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242572_ClassMember" id="ixv-55634">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242572_ClassMember" id="ixv-55658">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,287


$11,854



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242572_LG_ClassMember_3YR" id="ixv-55677">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242572_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208189"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242572_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208190"
      unitRef="usd">11287</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242572_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208191"
      unitRef="usd">11854</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242572_LG_1_AdditionalIndexMember_3YR"
      id="ixv-55694">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242572_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208192"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242572_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208193"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242572_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208194"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242572_LG_2_AdditionalIndexMember_3YR"
      id="ixv-55711">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242572_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208195"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242572_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208196"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242572_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208197"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242572_ClassMember" id="ixv-55753">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.02%

9.42%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242572_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208198"
      unitRef="pure">0.0502</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242572_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208199"
      unitRef="pure">0.0942</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242572_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208200"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242572_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208201"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242572_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208202"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242572_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208203"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242572_ClassMember" id="ixv-55808">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242572_ClassMember" id="ixv-55825">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242572_ClassMember" id="ixv-55829">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242572_ClassMember" id="ixv-55835">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242572_InstantMember"
      decimals="0"
      id="ixv-208204"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242572_InstantMember"
      decimals="INF"
      id="ixv-208205"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242572_ClassMember"
      decimals="0"
      id="ixv-208206"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242572_ClassMember"
      decimals="INF"
      id="ixv-208207"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242572_ClassMember" id="ixv-55910">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242572_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208208"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208209"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208210"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208211"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242572_ClassMember" id="ixv-56001">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242572_TH_0_Member"
      decimals="INF"
      id="ixv-208212"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_TH_1_Member"
      decimals="INF"
      id="ixv-208213"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_TH_2_Member"
      decimals="INF"
      id="ixv-208214"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_TH_3_Member"
      decimals="INF"
      id="ixv-208215"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_TH_4_Member"
      decimals="INF"
      id="ixv-208216"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_TH_5_Member"
      decimals="INF"
      id="ixv-208217"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242572_TH_6_Member"
      decimals="INF"
      id="ixv-208218"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242572_ClassMember" id="ixv-56096">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242572_ClassMember" id="ixv-56102">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242572_ClassMember" id="ixv-56106">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242572_ClassMember" id="ixv-56109">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242572_ClassMember" id="ixv-56113">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-56179">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242569_ClassMember" id="ixv-56191">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242569_ClassMember" id="ixv-56194">Fidelity Advisor&#xae; Sustainable Target Date 2025 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242569_ClassMember" id="ixv-56198">FSWSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242569_ClassMember" id="ixv-56217">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242569_ClassMember" id="ixv-56219">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242569_ClassMember" id="ixv-56224">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242569_ClassMember" id="ixv-56226">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242569_ClassMember" id="ixv-56229">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242569_ClassMember" id="ixv-56232">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242569_ClassMember" id="ixv-56239">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;97&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.95&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242569_ClassMember"
      decimals="0"
      id="ixv-208219"
      unitRef="usd">97</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242569_ClassMember"
      decimals="INF"
      id="ixv-208220"
      unitRef="pure">0.0095</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242569_ClassMember" id="ixv-56281">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242569_ClassMember" id="ixv-56305">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$10,673


$11,125



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242569_LG_ClassMember_3YR" id="ixv-56326">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242569_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208221"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242569_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208222"
      unitRef="usd">10673</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242569_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208223"
      unitRef="usd">11125</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242569_LG_1_AdditionalIndexMember_3YR"
      id="ixv-56343">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242569_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208224"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242569_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208225"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242569_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208226"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242569_LG_2_AdditionalIndexMember_3YR"
      id="ixv-56360">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242569_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208227"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242569_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208228"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242569_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208229"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242569_ClassMember" id="ixv-56402">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.58%

5.80%


Class M (without 3.50% sales charge)

4.23%

7.81%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_ClassMember_1YR"
      decimals="INF"
      id="ixv-208230"
      unitRef="pure">0.0058</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208231"
      unitRef="pure">0.0580</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208232"
      unitRef="pure">0.0423</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208233"
      unitRef="pure">0.0781</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208234"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208235"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208236"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242569_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208237"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242569_ClassMember" id="ixv-56468">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242569_ClassMember" id="ixv-56485">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242569_ClassMember" id="ixv-56489">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242569_ClassMember" id="ixv-56495">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242569_InstantMember"
      decimals="0"
      id="ixv-208238"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242569_InstantMember"
      decimals="INF"
      id="ixv-208239"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242569_ClassMember"
      decimals="0"
      id="ixv-208240"
      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242569_ClassMember"
      decimals="INF"
      id="ixv-208241"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242569_ClassMember" id="ixv-56570">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242569_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208242"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208243"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208244"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208245"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242569_ClassMember" id="ixv-56661">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242569_TH_0_Member"
      decimals="INF"
      id="ixv-208246"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_TH_1_Member"
      decimals="INF"
      id="ixv-208247"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_TH_2_Member"
      decimals="INF"
      id="ixv-208248"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_TH_3_Member"
      decimals="INF"
      id="ixv-208249"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_TH_4_Member"
      decimals="INF"
      id="ixv-208250"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_TH_5_Member"
      decimals="INF"
      id="ixv-208251"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242569_TH_6_Member"
      decimals="INF"
      id="ixv-208252"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-56802">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242535_ClassMember" id="ixv-56806">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242535_ClassMember" id="ixv-56817">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242535_ClassMember" id="ixv-56820">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242535_ClassMember" id="ixv-56824">FTGPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242535_ClassMember" id="ixv-56843">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242535_ClassMember" id="ixv-56845">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242535_ClassMember" id="ixv-56850">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242535_ClassMember" id="ixv-56852">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242535_ClassMember" id="ixv-56855">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242535_ClassMember" id="ixv-56858">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242535_ClassMember" id="ixv-56865">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2065 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;51&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242535_ClassMember"
      decimals="0"
      id="ixv-208253"
      unitRef="usd">51</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242535_ClassMember"
      decimals="INF"
      id="ixv-208254"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242535_ClassMember" id="ixv-56907">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242535_ClassMember" id="ixv-56931">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2065 Fund


$10,000

$11,953


$12,533



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242535_LG_ClassMember_3YR" id="ixv-56950">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2065 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242535_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208255"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242535_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208256"
      unitRef="usd">11953</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242535_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208257"
      unitRef="usd">12533</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242535_LG_1_AdditionalIndexMember_3YR"
      id="ixv-56967">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242535_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208258"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242535_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208259"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242535_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208260"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242535_LG_2_AdditionalIndexMember_3YR"
      id="ixv-56984">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242535_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208261"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242535_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208262"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242535_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208263"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242535_ClassMember" id="ixv-57026">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2065 Fund

4.85%

12.69%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242535_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208264"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242535_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208265"
      unitRef="pure">0.1269</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242535_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208266"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242535_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208267"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242535_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208268"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242535_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208269"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242535_ClassMember" id="ixv-57081">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242535_ClassMember" id="ixv-57098">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242535_ClassMember" id="ixv-57102">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242535_ClassMember" id="ixv-57108">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242535_InstantMember"
      decimals="0"
      id="ixv-208270"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242535_InstantMember"
      decimals="INF"
      id="ixv-208271"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242535_ClassMember"
      decimals="0"
      id="ixv-208272"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242535_ClassMember"
      decimals="INF"
      id="ixv-208273"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242535_ClassMember" id="ixv-57183">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242535_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208274"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208275"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208276"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208277"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242535_ClassMember" id="ixv-57274">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242535_TH_0_Member"
      decimals="INF"
      id="ixv-208278"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_TH_1_Member"
      decimals="INF"
      id="ixv-208279"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_TH_2_Member"
      decimals="INF"
      id="ixv-208280"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_TH_3_Member"
      decimals="INF"
      id="ixv-208281"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_TH_4_Member"
      decimals="INF"
      id="ixv-208282"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242535_TH_5_Member"
      decimals="INF"
      id="ixv-208283"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242535_ClassMember" id="ixv-57359">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242535_ClassMember" id="ixv-57365">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242535_ClassMember" id="ixv-57369">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242535_ClassMember" id="ixv-57372">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242535_ClassMember" id="ixv-57376">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242535_ClassMember" id="ixv-57387">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-57445">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242496_ClassMember" id="ixv-57457">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242496_ClassMember" id="ixv-57460">Fidelity Advisor&#xae; Sustainable Target Date Income Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242496_ClassMember" id="ixv-57464">FSUFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242496_ClassMember" id="ixv-57483">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242496_ClassMember" id="ixv-57485">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242496_ClassMember" id="ixv-57490">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242496_ClassMember" id="ixv-57492">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242496_ClassMember" id="ixv-57495">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242496_ClassMember" id="ixv-57498">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242496_ClassMember" id="ixv-57505">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;144&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.41&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242496_ClassMember"
      decimals="0"
      id="ixv-208284"
      unitRef="usd">144</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242496_ClassMember"
      decimals="INF"
      id="ixv-208285"
      unitRef="pure">0.0141</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242496_ClassMember" id="ixv-57547">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242496_ClassMember" id="ixv-57571">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$10,396


$10,815



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242496_LG_ClassMember_3YR" id="ixv-57590">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242496_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208286"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242496_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208287"
      unitRef="usd">10396</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242496_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208288"
      unitRef="usd">10815</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242496_LG_1_AdditionalIndexMember_3YR"
      id="ixv-57607">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242496_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208289"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242496_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208290"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242496_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208291"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242496_LG_2_AdditionalIndexMember_3YR"
      id="ixv-57624">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242496_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208292"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242496_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208293"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242496_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208294"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242496_ClassMember" id="ixv-57666">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

3.03%

4.23%


Class C

4.03%

4.23%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_ClassMember_1YR"
      decimals="INF"
      id="ixv-208295"
      unitRef="pure">0.0303</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208296"
      unitRef="pure">0.0423</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208297"
      unitRef="pure">0.0403</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208298"
      unitRef="pure">0.0423</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208299"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208300"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208301"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242496_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208302"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242496_ClassMember" id="ixv-57733">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242496_ClassMember" id="ixv-57750">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242496_ClassMember" id="ixv-57754">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242496_ClassMember" id="ixv-57760">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242496_InstantMember"
      decimals="0"
      id="ixv-208303"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242496_InstantMember"
      decimals="INF"
      id="ixv-208304"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242496_ClassMember"
      decimals="0"
      id="ixv-208305"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242496_ClassMember"
      decimals="INF"
      id="ixv-208306"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242496_ClassMember" id="ixv-57835">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242496_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208307"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208308"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208309"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208310"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208311"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242496_ClassMember" id="ixv-57939">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242496_TH_0_Member"
      decimals="INF"
      id="ixv-208312"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_1_Member"
      decimals="INF"
      id="ixv-208313"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_2_Member"
      decimals="INF"
      id="ixv-208314"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_3_Member"
      decimals="INF"
      id="ixv-208315"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_4_Member"
      decimals="INF"
      id="ixv-208316"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_5_Member"
      decimals="INF"
      id="ixv-208317"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_6_Member"
      decimals="INF"
      id="ixv-208318"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_7_Member"
      decimals="INF"
      id="ixv-208319"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242496_TH_8_Member"
      decimals="INF"
      id="ixv-208320"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-58100">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242512_ClassMember" id="ixv-58104">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242512_ClassMember" id="ixv-58115">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242512_ClassMember" id="ixv-58118">Fidelity Advisor&#xae; Sustainable Target Date 2055 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242512_ClassMember" id="ixv-58122">FSZMX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242512_ClassMember" id="ixv-58141">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242512_ClassMember" id="ixv-58143">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242512_ClassMember" id="ixv-58148">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242512_ClassMember" id="ixv-58150">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242512_ClassMember" id="ixv-58153">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242512_ClassMember" id="ixv-58156">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242512_ClassMember" id="ixv-58163">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242512_ClassMember"
      decimals="0"
      id="ixv-208321"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242512_ClassMember"
      decimals="INF"
      id="ixv-208322"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242512_ClassMember" id="ixv-58205">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242512_ClassMember" id="ixv-58229">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,959


$12,539



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242512_LG_ClassMember_3YR" id="ixv-58248">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242512_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208323"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242512_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208324"
      unitRef="usd">11959</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242512_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208325"
      unitRef="usd">12539</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242512_LG_1_AdditionalIndexMember_3YR"
      id="ixv-58265">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242512_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208326"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242512_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208327"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242512_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208328"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242512_LG_2_AdditionalIndexMember_3YR"
      id="ixv-58282">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242512_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208329"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242512_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208330"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242512_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208331"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242512_ClassMember" id="ixv-58324">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.85%

12.72%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242512_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208332"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242512_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208333"
      unitRef="pure">0.1272</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242512_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208334"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242512_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208335"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242512_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208336"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242512_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208337"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242512_ClassMember" id="ixv-58379">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242512_ClassMember" id="ixv-58396">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242512_ClassMember" id="ixv-58400">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242512_ClassMember" id="ixv-58406">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242512_InstantMember"
      decimals="0"
      id="ixv-208338"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242512_InstantMember"
      decimals="INF"
      id="ixv-208339"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242512_ClassMember"
      decimals="0"
      id="ixv-208340"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242512_ClassMember"
      decimals="INF"
      id="ixv-208341"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242512_ClassMember" id="ixv-58481">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242512_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208342"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208343"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208344"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208345"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242512_ClassMember" id="ixv-58572">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242512_TH_0_Member"
      decimals="INF"
      id="ixv-208346"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_TH_1_Member"
      decimals="INF"
      id="ixv-208347"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_TH_2_Member"
      decimals="INF"
      id="ixv-208348"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_TH_3_Member"
      decimals="INF"
      id="ixv-208349"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_TH_4_Member"
      decimals="INF"
      id="ixv-208350"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242512_TH_5_Member"
      decimals="INF"
      id="ixv-208351"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242512_ClassMember" id="ixv-58657">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242512_ClassMember" id="ixv-58663">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242512_ClassMember" id="ixv-58667">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242512_ClassMember" id="ixv-58670">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242512_ClassMember" id="ixv-58674">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242512_ClassMember" id="ixv-58685">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-58743">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242513_ClassMember" id="ixv-58747">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242513_ClassMember" id="ixv-58758">Fidelity&#xae; Sustainable Target Date 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242513_ClassMember" id="ixv-58761">Fidelity Advisor&#xae; Sustainable Target Date 2055 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242513_ClassMember" id="ixv-58765">FSZNX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242513_ClassMember" id="ixv-58784">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242513_ClassMember" id="ixv-58786">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242513_ClassMember" id="ixv-58791">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242513_ClassMember" id="ixv-58793">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242513_ClassMember" id="ixv-58796">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242513_ClassMember" id="ixv-58799">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242513_ClassMember" id="ixv-58806">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;40&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242513_ClassMember"
      decimals="0"
      id="ixv-208352"
      unitRef="usd">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242513_ClassMember"
      decimals="INF"
      id="ixv-208353"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242513_ClassMember" id="ixv-58848">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242513_ClassMember" id="ixv-58872">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,966


$12,562



Fidelity Sustainable Target Date 2055 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242513_LG_ClassMember_3YR" id="ixv-58891">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242513_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208354"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242513_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208355"
      unitRef="usd">11966</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242513_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208356"
      unitRef="usd">12562</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242513_LG_1_AdditionalIndexMember_3YR"
      id="ixv-58908">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242513_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208357"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242513_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208358"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242513_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208359"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242513_LG_2_AdditionalIndexMember_3YR"
      id="ixv-58925">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242513_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208360"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242513_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208361"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242513_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208362"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242513_ClassMember" id="ixv-58967">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.98%

12.82%


Fidelity Sustainable Target Date 2055 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242513_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208363"
      unitRef="pure">0.0498</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242513_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208364"
      unitRef="pure">0.1282</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242513_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208365"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242513_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208366"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242513_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208367"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242513_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208368"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242513_ClassMember" id="ixv-59022">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242513_ClassMember" id="ixv-59039">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242513_ClassMember" id="ixv-59043">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242513_ClassMember" id="ixv-59049">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,372,436&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,615&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242513_InstantMember"
      decimals="0"
      id="ixv-208369"
      unitRef="usd">6372436</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242513_InstantMember"
      decimals="INF"
      id="ixv-208370"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242513_ClassMember"
      decimals="0"
      id="ixv-208371"
      unitRef="usd">22615</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242513_ClassMember"
      decimals="INF"
      id="ixv-208372"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242513_ClassMember" id="ixv-59124">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242513_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208373"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208374"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208375"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208376"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242513_ClassMember" id="ixv-59215">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242513_TH_0_Member"
      decimals="INF"
      id="ixv-208377"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_TH_1_Member"
      decimals="INF"
      id="ixv-208378"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_TH_2_Member"
      decimals="INF"
      id="ixv-208379"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_TH_3_Member"
      decimals="INF"
      id="ixv-208380"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_TH_4_Member"
      decimals="INF"
      id="ixv-208381"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242513_TH_5_Member"
      decimals="INF"
      id="ixv-208382"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242513_ClassMember" id="ixv-59300">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242513_ClassMember" id="ixv-59306">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242513_ClassMember" id="ixv-59310">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242513_ClassMember" id="ixv-59313">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242513_ClassMember" id="ixv-59317">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242513_ClassMember" id="ixv-59328">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-59386">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242567_ClassMember" id="ixv-59398">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242567_ClassMember" id="ixv-59401">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242567_ClassMember" id="ixv-59405">FSWOX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242567_ClassMember" id="ixv-59424">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242567_ClassMember" id="ixv-59426">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242567_ClassMember" id="ixv-59431">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242567_ClassMember" id="ixv-59433">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242567_ClassMember" id="ixv-59436">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242567_ClassMember" id="ixv-59439">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242567_ClassMember" id="ixv-59446">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2025 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;46&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.45&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242567_ClassMember"
      decimals="0"
      id="ixv-208383"
      unitRef="usd">46</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242567_ClassMember"
      decimals="INF"
      id="ixv-208384"
      unitRef="pure">0.0045</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242567_ClassMember" id="ixv-59488">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242567_ClassMember" id="ixv-59512">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2025 Fund


$10,000

$11,109


$11,643



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242567_LG_ClassMember_3YR" id="ixv-59531">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2025 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242567_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208385"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242567_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208386"
      unitRef="usd">11109</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242567_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208387"
      unitRef="usd">11643</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242567_LG_1_AdditionalIndexMember_3YR"
      id="ixv-59548">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242567_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208388"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242567_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208389"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242567_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208390"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242567_LG_2_AdditionalIndexMember_3YR"
      id="ixv-59565">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242567_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208391"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242567_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208392"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242567_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208393"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242567_ClassMember" id="ixv-59607">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2025 Fund

4.81%

8.38%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242567_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208394"
      unitRef="pure">0.0481</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242567_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208395"
      unitRef="pure">0.0838</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242567_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208396"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242567_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208397"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242567_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208398"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242567_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208399"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242567_ClassMember" id="ixv-59662">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242567_ClassMember" id="ixv-59679">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242567_ClassMember" id="ixv-59683">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242567_ClassMember" id="ixv-59689">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242567_InstantMember"
      decimals="0"
      id="ixv-208400"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242567_InstantMember"
      decimals="INF"
      id="ixv-208401"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242567_ClassMember"
      decimals="0"
      id="ixv-208402"
      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242567_ClassMember"
      decimals="INF"
      id="ixv-208403"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242567_ClassMember" id="ixv-59764">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242567_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208404"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208405"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208406"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208407"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242567_ClassMember" id="ixv-59855">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242567_TH_0_Member"
      decimals="INF"
      id="ixv-208408"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_TH_1_Member"
      decimals="INF"
      id="ixv-208409"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_TH_2_Member"
      decimals="INF"
      id="ixv-208410"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_TH_3_Member"
      decimals="INF"
      id="ixv-208411"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_TH_4_Member"
      decimals="INF"
      id="ixv-208412"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_TH_5_Member"
      decimals="INF"
      id="ixv-208413"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242567_TH_6_Member"
      decimals="INF"
      id="ixv-208414"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-59996">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242537_ClassMember" id="ixv-60008">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242537_ClassMember" id="ixv-60011">Fidelity&#xae; Sustainable Target Date 2010 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242537_ClassMember" id="ixv-60015">FSVKX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242537_ClassMember" id="ixv-60034">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242537_ClassMember" id="ixv-60036">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242537_ClassMember" id="ixv-60041">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242537_ClassMember" id="ixv-60043">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242537_ClassMember" id="ixv-60046">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242537_ClassMember" id="ixv-60049">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242537_ClassMember" id="ixv-60056">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242537_ClassMember"
      decimals="0"
      id="ixv-208415"
      unitRef="usd">32</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242537_ClassMember"
      decimals="INF"
      id="ixv-208416"
      unitRef="pure">0.0031</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242537_ClassMember" id="ixv-60098">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242537_ClassMember" id="ixv-60122">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$10,655


$11,201



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242537_LG_ClassMember_3YR" id="ixv-60141">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242537_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208417"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242537_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208418"
      unitRef="usd">10655</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242537_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208419"
      unitRef="usd">11201</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242537_LG_1_AdditionalIndexMember_3YR"
      id="ixv-60158">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242537_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208420"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242537_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208421"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242537_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208422"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242537_LG_2_AdditionalIndexMember_3YR"
      id="ixv-60175">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242537_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208423"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242537_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208424"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242537_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208425"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242537_ClassMember" id="ixv-60217">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

5.13%

6.18%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242537_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208426"
      unitRef="pure">0.0513</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242537_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208427"
      unitRef="pure">0.0618</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242537_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208428"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242537_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208429"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242537_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208430"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242537_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208431"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242537_ClassMember" id="ixv-60272">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242537_ClassMember" id="ixv-60289">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242537_ClassMember" id="ixv-60293">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242537_ClassMember" id="ixv-60299">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242537_InstantMember"
      decimals="0"
      id="ixv-208432"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242537_InstantMember"
      decimals="INF"
      id="ixv-208433"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242537_ClassMember"
      decimals="0"
      id="ixv-208434"
      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242537_ClassMember"
      decimals="INF"
      id="ixv-208435"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242537_ClassMember" id="ixv-60374">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242537_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208436"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208437"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208438"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208439"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208440"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242537_ClassMember" id="ixv-60478">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242537_TH_0_Member"
      decimals="INF"
      id="ixv-208441"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_1_Member"
      decimals="INF"
      id="ixv-208442"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_2_Member"
      decimals="INF"
      id="ixv-208443"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_3_Member"
      decimals="INF"
      id="ixv-208444"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_4_Member"
      decimals="INF"
      id="ixv-208445"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_5_Member"
      decimals="INF"
      id="ixv-208446"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_6_Member"
      decimals="INF"
      id="ixv-208447"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_7_Member"
      decimals="INF"
      id="ixv-208448"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242537_TH_8_Member"
      decimals="INF"
      id="ixv-208449"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-60639">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242531_ClassMember" id="ixv-60643">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242531_ClassMember" id="ixv-60654">Fidelity&#xae; Sustainable Target Date 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242531_ClassMember" id="ixv-60657">Fidelity Advisor&#xae; Sustainable Target Date 2065 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242531_ClassMember" id="ixv-60661">FTHBX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242531_ClassMember" id="ixv-60680">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242531_ClassMember" id="ixv-60682">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242531_ClassMember" id="ixv-60687">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242531_ClassMember" id="ixv-60689">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242531_ClassMember" id="ixv-60692">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242531_ClassMember" id="ixv-60695">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242531_ClassMember" id="ixv-60702">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;50&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242531_ClassMember"
      decimals="0"
      id="ixv-208450"
      unitRef="usd">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242531_ClassMember"
      decimals="INF"
      id="ixv-208451"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242531_ClassMember" id="ixv-60744">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242531_ClassMember" id="ixv-60768">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,963


$12,541



Fidelity Sustainable Target Date 2065 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242531_LG_ClassMember_3YR" id="ixv-60787">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242531_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208452"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242531_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208453"
      unitRef="usd">11963</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242531_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208454"
      unitRef="usd">12541</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242531_LG_1_AdditionalIndexMember_3YR"
      id="ixv-60804">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242531_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208455"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242531_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208456"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242531_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208457"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242531_LG_2_AdditionalIndexMember_3YR"
      id="ixv-60821">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242531_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208458"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242531_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208459"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242531_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208460"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242531_ClassMember" id="ixv-60863">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.84%

12.73%


Fidelity Sustainable Target Date 2065 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242531_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208461"
      unitRef="pure">0.0484</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242531_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208462"
      unitRef="pure">0.1273</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242531_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208463"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242531_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208464"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242531_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208465"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242531_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208466"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242531_ClassMember" id="ixv-60918">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242531_ClassMember" id="ixv-60935">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242531_ClassMember" id="ixv-60939">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242531_ClassMember" id="ixv-60945">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,712,296&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,465&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242531_InstantMember"
      decimals="0"
      id="ixv-208467"
      unitRef="usd">3712296</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242531_InstantMember"
      decimals="INF"
      id="ixv-208468"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242531_ClassMember"
      decimals="0"
      id="ixv-208469"
      unitRef="usd">13465</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242531_ClassMember"
      decimals="INF"
      id="ixv-208470"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242531_ClassMember" id="ixv-61020">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242531_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208471"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208472"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208473"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208474"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242531_ClassMember" id="ixv-61111">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242531_TH_0_Member"
      decimals="INF"
      id="ixv-208475"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_TH_1_Member"
      decimals="INF"
      id="ixv-208476"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_TH_2_Member"
      decimals="INF"
      id="ixv-208477"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_TH_3_Member"
      decimals="INF"
      id="ixv-208478"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_TH_4_Member"
      decimals="INF"
      id="ixv-208479"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242531_TH_5_Member"
      decimals="INF"
      id="ixv-208480"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242531_ClassMember" id="ixv-61196">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242531_ClassMember" id="ixv-61202">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242531_ClassMember" id="ixv-61206">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242531_ClassMember" id="ixv-61209">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-877-208-0098&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242531_ClassMember" id="ixv-61213">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000242531_ClassMember" id="ixv-61224">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund added a contractual proxy and shareholder meeting expense cap during the reporting period.&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-61282">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250741_ClassMember" id="ixv-61294">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250741_ClassMember" id="ixv-61297">Fidelity Advisor&#xae; Sustainable Target Date 2070 Fund Class A</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250741_ClassMember" id="ixv-61301">FRCWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250741_ClassMember" id="ixv-61320">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250741_ClassMember" id="ixv-61322">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250741_ClassMember" id="ixv-61327">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250741_ClassMember" id="ixv-61329">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250741_ClassMember" id="ixv-61332">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250741_ClassMember" id="ixv-61335">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250741_ClassMember" id="ixv-61342">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;57&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.74&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250741_ClassMember"
      decimals="0"
      id="ixv-208481"
      unitRef="usd">57</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250741_ClassMember"
      decimals="INF"
      id="ixv-208482"
      unitRef="pure">0.0074</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250741_ClassMember" id="ixv-61385">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250741_ClassMember" id="ixv-61391">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250741_ClassMember" id="ixv-61415">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class A


$9,425

$9,664



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250741_LG_ClassMember_2YR" id="ixv-61436">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class A&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250741_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208483"
      unitRef="usd">9425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250741_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208484"
      unitRef="usd">9664</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250741_LG_1_AdditionalIndexMember_2YR"
      id="ixv-61449">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250741_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208485"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250741_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208486"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250741_LG_2_AdditionalIndexMember_2YR"
      id="ixv-61463">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250741_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208487"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250741_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208488"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250741_ClassMember" id="ixv-61498">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250741_InstantMember"
      decimals="0"
      id="ixv-208489"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250741_InstantMember"
      decimals="INF"
      id="ixv-208490"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250741_ClassMember"
      decimals="0"
      id="ixv-208491"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250741_ClassMember"
      decimals="INF"
      id="ixv-208492"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250741_ClassMember" id="ixv-61573">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250741_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208493"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208494"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208495"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208496"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250741_ClassMember" id="ixv-61664">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250741_TH_0_Member"
      decimals="INF"
      id="ixv-208497"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_TH_1_Member"
      decimals="INF"
      id="ixv-208498"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_TH_2_Member"
      decimals="INF"
      id="ixv-208499"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_TH_3_Member"
      decimals="INF"
      id="ixv-208500"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_TH_4_Member"
      decimals="INF"
      id="ixv-208501"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250741_TH_5_Member"
      decimals="INF"
      id="ixv-208502"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-61795">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242492_ClassMember" id="ixv-61807">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242492_ClassMember" id="ixv-61810">Fidelity&#xae; Sustainable Target Date Income Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242492_ClassMember" id="ixv-61814">FSUOX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242492_ClassMember" id="ixv-61833">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242492_ClassMember" id="ixv-61835">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242492_ClassMember" id="ixv-61840">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242492_ClassMember" id="ixv-61842">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242492_ClassMember" id="ixv-61845">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242492_ClassMember" id="ixv-61848">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242492_ClassMember" id="ixv-61855">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242492_ClassMember"
      decimals="0"
      id="ixv-208503"
      unitRef="usd">32</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242492_ClassMember"
      decimals="INF"
      id="ixv-208504"
      unitRef="pure">0.0031</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242492_ClassMember" id="ixv-61897">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242492_ClassMember" id="ixv-61921">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$10,494


$11,039



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242492_LG_ClassMember_3YR" id="ixv-61940">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242492_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208505"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242492_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208506"
      unitRef="usd">10494</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242492_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208507"
      unitRef="usd">11039</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242492_LG_1_AdditionalIndexMember_3YR"
      id="ixv-61957">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242492_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208508"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242492_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208509"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242492_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208510"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242492_LG_2_AdditionalIndexMember_3YR"
      id="ixv-61974">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242492_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208511"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242492_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208512"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242492_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208513"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242492_ClassMember" id="ixv-62016">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

5.19%

5.37%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242492_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208514"
      unitRef="pure">0.0519</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242492_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208515"
      unitRef="pure">0.0537</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242492_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208516"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242492_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208517"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242492_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208518"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242492_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208519"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242492_ClassMember" id="ixv-62071">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242492_ClassMember" id="ixv-62088">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242492_ClassMember" id="ixv-62092">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242492_ClassMember" id="ixv-62098">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242492_InstantMember"
      decimals="0"
      id="ixv-208520"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242492_InstantMember"
      decimals="INF"
      id="ixv-208521"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242492_ClassMember"
      decimals="0"
      id="ixv-208522"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242492_ClassMember"
      decimals="INF"
      id="ixv-208523"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242492_ClassMember" id="ixv-62173">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242492_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208524"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208525"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208526"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208527"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208528"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242492_ClassMember" id="ixv-62277">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242492_TH_0_Member"
      decimals="INF"
      id="ixv-208529"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_1_Member"
      decimals="INF"
      id="ixv-208530"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_2_Member"
      decimals="INF"
      id="ixv-208531"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_3_Member"
      decimals="INF"
      id="ixv-208532"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_4_Member"
      decimals="INF"
      id="ixv-208533"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_5_Member"
      decimals="INF"
      id="ixv-208534"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_6_Member"
      decimals="INF"
      id="ixv-208535"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_7_Member"
      decimals="INF"
      id="ixv-208536"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242492_TH_8_Member"
      decimals="INF"
      id="ixv-208537"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-62438">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242571_ClassMember" id="ixv-62450">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242571_ClassMember" id="ixv-62453">Fidelity Advisor&#xae; Sustainable Target Date 2025 Fund Class I</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242571_ClassMember" id="ixv-62457">FSWUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242571_ClassMember" id="ixv-62476">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242571_ClassMember" id="ixv-62478">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242571_ClassMember" id="ixv-62483">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242571_ClassMember" id="ixv-62485">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242571_ClassMember" id="ixv-62488">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242571_ClassMember" id="ixv-62491">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242571_ClassMember" id="ixv-62498">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;46&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.45&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242571_ClassMember"
      decimals="0"
      id="ixv-208538"
      unitRef="usd">46</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242571_ClassMember"
      decimals="INF"
      id="ixv-208539"
      unitRef="pure">0.0045</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242571_ClassMember" id="ixv-62540">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242571_ClassMember" id="ixv-62564">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class I


$10,000

$11,113


$11,639



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242571_LG_ClassMember_3YR" id="ixv-62583">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class I&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242571_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208540"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242571_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208541"
      unitRef="usd">11113</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242571_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208542"
      unitRef="usd">11639</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242571_LG_1_AdditionalIndexMember_3YR"
      id="ixv-62600">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242571_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208543"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242571_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208544"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242571_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208545"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242571_LG_2_AdditionalIndexMember_3YR"
      id="ixv-62617">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242571_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208546"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242571_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208547"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242571_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208548"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242571_ClassMember" id="ixv-62659">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class I

4.73%

8.36%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242571_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208549"
      unitRef="pure">0.0473</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242571_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208550"
      unitRef="pure">0.0836</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242571_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208551"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242571_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208552"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242571_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208553"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242571_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208554"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242571_ClassMember" id="ixv-62714">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242571_ClassMember" id="ixv-62731">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242571_ClassMember" id="ixv-62735">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242571_ClassMember" id="ixv-62741">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242571_InstantMember"
      decimals="0"
      id="ixv-208555"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242571_InstantMember"
      decimals="INF"
      id="ixv-208556"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242571_ClassMember"
      decimals="0"
      id="ixv-208557"
      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242571_ClassMember"
      decimals="INF"
      id="ixv-208558"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242571_ClassMember" id="ixv-62816">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242571_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208559"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208560"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208561"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208562"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242571_ClassMember" id="ixv-62907">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242571_TH_0_Member"
      decimals="INF"
      id="ixv-208563"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_TH_1_Member"
      decimals="INF"
      id="ixv-208564"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_TH_2_Member"
      decimals="INF"
      id="ixv-208565"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_TH_3_Member"
      decimals="INF"
      id="ixv-208566"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_TH_4_Member"
      decimals="INF"
      id="ixv-208567"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_TH_5_Member"
      decimals="INF"
      id="ixv-208568"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242571_TH_6_Member"
      decimals="INF"
      id="ixv-208569"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-63048">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242555_ClassMember" id="ixv-63060">Fidelity&#xae; Sustainable Target Date 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242555_ClassMember" id="ixv-63063">Fidelity&#xae; Sustainable Target Date 2020 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242555_ClassMember" id="ixv-63067">FSWMX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242555_ClassMember" id="ixv-63086">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242555_ClassMember" id="ixv-63088">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242555_ClassMember" id="ixv-63093">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242555_ClassMember" id="ixv-63095">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242555_ClassMember" id="ixv-63098">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242555_ClassMember" id="ixv-63101">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242555_ClassMember" id="ixv-63108">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;34&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.33&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242555_ClassMember"
      decimals="0"
      id="ixv-208570"
      unitRef="usd">34</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242555_ClassMember"
      decimals="INF"
      id="ixv-208571"
      unitRef="pure">0.0033</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242555_ClassMember" id="ixv-63150">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242555_ClassMember" id="ixv-63174">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$10,974


$11,516



Fidelity Sustainable Target Date 2020 Composite Index&#x2120;


$10,000

$10,956


$11,565



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242555_LG_ClassMember_3YR" id="ixv-63193">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242555_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208572"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242555_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208573"
      unitRef="usd">10974</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242555_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208574"
      unitRef="usd">11516</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242555_LG_1_AdditionalIndexMember_3YR"
      id="ixv-63210">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242555_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208575"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242555_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208576"
      unitRef="usd">10956</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242555_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208577"
      unitRef="usd">11565</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242555_LG_2_AdditionalIndexMember_3YR"
      id="ixv-63227">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242555_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208578"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242555_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208579"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242555_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208580"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242555_ClassMember" id="ixv-63269">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.94%

7.75%


Fidelity Sustainable Target Date 2020 Composite Index&#x2120;

5.57%


8.00%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242555_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208581"
      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242555_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208582"
      unitRef="pure">0.0775</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242555_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208583"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242555_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208584"
      unitRef="pure">0.0800</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242555_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208585"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242555_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208586"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242555_ClassMember" id="ixv-63324">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242555_ClassMember" id="ixv-63341">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242555_ClassMember" id="ixv-63345">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242555_ClassMember" id="ixv-63351">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,087,392&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,025&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242555_InstantMember"
      decimals="0"
      id="ixv-208587"
      unitRef="usd">2087392</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242555_InstantMember"
      decimals="INF"
      id="ixv-208588"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242555_ClassMember"
      decimals="0"
      id="ixv-208589"
      unitRef="usd">7025</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242555_ClassMember"
      decimals="INF"
      id="ixv-208590"
      unitRef="pure">0.22</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242555_ClassMember" id="ixv-63426">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.6


International Equity Funds

22.9


Short-Term Funds

0.1


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 23.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242555_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208591"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208592"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208593"
      unitRef="pure">0.229</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208594"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208595"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242555_ClassMember" id="ixv-63530">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

34.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

23.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

15.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

1.9


&#160;


Fidelity Series Treasury Bill Index Fund

0.1


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242555_TH_0_Member"
      decimals="INF"
      id="ixv-208596"
      unitRef="pure">0.345</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_1_Member"
      decimals="INF"
      id="ixv-208597"
      unitRef="pure">0.236</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_2_Member"
      decimals="INF"
      id="ixv-208598"
      unitRef="pure">0.153</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_3_Member"
      decimals="INF"
      id="ixv-208599"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_4_Member"
      decimals="INF"
      id="ixv-208600"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_5_Member"
      decimals="INF"
      id="ixv-208601"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_6_Member"
      decimals="INF"
      id="ixv-208602"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_7_Member"
      decimals="INF"
      id="ixv-208603"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242555_TH_8_Member"
      decimals="INF"
      id="ixv-208604"
      unitRef="pure">0.001</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-63691">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242549_ClassMember" id="ixv-63703">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242549_ClassMember" id="ixv-63706">Fidelity&#xae; Sustainable Target Date 2015 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242549_ClassMember" id="ixv-63710">FSVNX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242549_ClassMember" id="ixv-63729">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242549_ClassMember" id="ixv-63731">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242549_ClassMember" id="ixv-63736">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242549_ClassMember" id="ixv-63738">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242549_ClassMember" id="ixv-63741">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242549_ClassMember" id="ixv-63744">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242549_ClassMember" id="ixv-63751">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2015 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;43&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.42&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242549_ClassMember"
      decimals="0"
      id="ixv-208605"
      unitRef="usd">43</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242549_ClassMember"
      decimals="INF"
      id="ixv-208606"
      unitRef="pure">0.0042</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242549_ClassMember" id="ixv-63793">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242549_ClassMember" id="ixv-63817">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2015 Fund


$10,000

$10,805


$11,336



Fidelity Sustainable Target Date 2015 Composite Index&#x2120;


$10,000

$10,811


$11,411



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242549_LG_ClassMember_3YR" id="ixv-63836">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2015 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242549_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208607"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242549_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208608"
      unitRef="usd">10805</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242549_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208609"
      unitRef="usd">11336</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242549_LG_1_AdditionalIndexMember_3YR"
      id="ixv-63853">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242549_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208610"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242549_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208611"
      unitRef="usd">10811</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242549_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208612"
      unitRef="usd">11411</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242549_LG_2_AdditionalIndexMember_3YR"
      id="ixv-63870">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242549_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208613"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242549_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208614"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242549_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208615"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242549_ClassMember" id="ixv-63912">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2015 Fund

4.91%

6.86%


Fidelity Sustainable Target Date 2015 Composite Index&#x2120;

5.55%


7.23%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242549_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208616"
      unitRef="pure">0.0491</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242549_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208617"
      unitRef="pure">0.0686</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242549_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208618"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242549_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208619"
      unitRef="pure">0.0723</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242549_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208620"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242549_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208621"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242549_ClassMember" id="ixv-63967">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242549_ClassMember" id="ixv-63984">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242549_ClassMember" id="ixv-63988">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242549_ClassMember" id="ixv-63994">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,330,950&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,396&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;19&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242549_InstantMember"
      decimals="0"
      id="ixv-208622"
      unitRef="usd">1330950</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242549_InstantMember"
      decimals="INF"
      id="ixv-208623"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242549_ClassMember"
      decimals="0"
      id="ixv-208624"
      unitRef="usd">4396</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242549_ClassMember"
      decimals="INF"
      id="ixv-208625"
      unitRef="pure">0.19</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242549_ClassMember" id="ixv-64069">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.3


International Equity Funds

19.2


Domestic Equity Funds

18.1


Short-Term Funds

0.4


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242549_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208626"
      unitRef="pure">0.623</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208627"
      unitRef="pure">0.192</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208628"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208629"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208630"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242549_ClassMember" id="ixv-64173">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

37.9


&#160;


Fidelity Series Sustainable U.S. Market Fund

18.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

12.7


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

6.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Treasury Bill Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242549_TH_0_Member"
      decimals="INF"
      id="ixv-208631"
      unitRef="pure">0.379</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_1_Member"
      decimals="INF"
      id="ixv-208632"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_2_Member"
      decimals="INF"
      id="ixv-208633"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_3_Member"
      decimals="INF"
      id="ixv-208634"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_4_Member"
      decimals="INF"
      id="ixv-208635"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_5_Member"
      decimals="INF"
      id="ixv-208636"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_6_Member"
      decimals="INF"
      id="ixv-208637"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_7_Member"
      decimals="INF"
      id="ixv-208638"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242549_TH_8_Member"
      decimals="INF"
      id="ixv-208639"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-64334">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242603_ClassMember" id="ixv-64346">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242603_ClassMember" id="ixv-64349">Fidelity&#xae; Sustainable Target Date 2045 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242603_ClassMember" id="ixv-64353">FSYHX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242603_ClassMember" id="ixv-64372">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242603_ClassMember" id="ixv-64374">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242603_ClassMember" id="ixv-64379">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242603_ClassMember" id="ixv-64381">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242603_ClassMember" id="ixv-64384">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242603_ClassMember" id="ixv-64387">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242603_ClassMember" id="ixv-64394">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2045 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;51&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.49&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242603_ClassMember"
      decimals="0"
      id="ixv-208640"
      unitRef="usd">51</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242603_ClassMember"
      decimals="INF"
      id="ixv-208641"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242603_ClassMember" id="ixv-64436">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242603_ClassMember" id="ixv-64460">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Fidelity&#xae; Sustainable Target Date 2045 Fund


$10,000

$11,953


$12,538



Fidelity Sustainable Target Date 2045 Composite Index&#x2120;


$10,000

$11,842


$12,567



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242603_LG_ClassMember_3YR" id="ixv-64479">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable Target Date 2045 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242603_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208642"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242603_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208643"
      unitRef="usd">11953</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242603_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208644"
      unitRef="usd">12538</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242603_LG_1_AdditionalIndexMember_3YR"
      id="ixv-64496">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242603_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208645"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242603_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208646"
      unitRef="usd">11842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242603_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208647"
      unitRef="usd">12567</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242603_LG_2_AdditionalIndexMember_3YR"
      id="ixv-64513">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242603_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208648"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242603_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208649"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242603_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208650"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242603_ClassMember" id="ixv-64555">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Fidelity&#xae; Sustainable Target Date 2045 Fund

4.90%

12.71%


Fidelity Sustainable Target Date 2045 Composite Index&#x2120;

6.12%


12.85%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242603_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208651"
      unitRef="pure">0.0490</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242603_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208652"
      unitRef="pure">0.1271</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242603_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208653"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242603_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208654"
      unitRef="pure">0.1285</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242603_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208655"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242603_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208656"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242603_ClassMember" id="ixv-64610">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242603_ClassMember" id="ixv-64627">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242603_ClassMember" id="ixv-64631">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242603_ClassMember" id="ixv-64637">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;7,140,040&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;23,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242603_InstantMember"
      decimals="0"
      id="ixv-208657"
      unitRef="usd">7140040</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242603_InstantMember"
      decimals="INF"
      id="ixv-208658"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242603_ClassMember"
      decimals="0"
      id="ixv-208659"
      unitRef="usd">23323</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242603_ClassMember"
      decimals="INF"
      id="ixv-208660"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242603_ClassMember" id="ixv-64712">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242603_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208661"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208662"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208663"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208664"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242603_ClassMember" id="ixv-64803">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242603_TH_0_Member"
      decimals="INF"
      id="ixv-208665"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_TH_1_Member"
      decimals="INF"
      id="ixv-208666"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_TH_2_Member"
      decimals="INF"
      id="ixv-208667"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_TH_3_Member"
      decimals="INF"
      id="ixv-208668"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_TH_4_Member"
      decimals="INF"
      id="ixv-208669"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242603_TH_5_Member"
      decimals="INF"
      id="ixv-208670"
      unitRef="pure">0.000</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-64934">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242491_ClassMember" id="ixv-64938">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242491_ClassMember" id="ixv-64949">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242491_ClassMember" id="ixv-64952">Fidelity&#xae; Sustainable Target Date Income Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242491_ClassMember" id="ixv-64956">FSUWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242491_ClassMember" id="ixv-64975">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242491_ClassMember" id="ixv-64977">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242491_ClassMember" id="ixv-64982">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242491_ClassMember" id="ixv-64984">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242491_ClassMember" id="ixv-64987">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242491_ClassMember" id="ixv-64990">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242491_ClassMember" id="ixv-64997">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.21&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242491_ClassMember"
      decimals="0"
      id="ixv-208671"
      unitRef="usd">22</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242491_ClassMember"
      decimals="INF"
      id="ixv-208672"
      unitRef="pure">0.0021</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242491_ClassMember" id="ixv-65039">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242491_ClassMember" id="ixv-65063">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$10,503


$11,064



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242491_LG_ClassMember_3YR" id="ixv-65082">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242491_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208673"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242491_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208674"
      unitRef="usd">10503</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242491_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208675"
      unitRef="usd">11064</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242491_LG_1_AdditionalIndexMember_3YR"
      id="ixv-65099">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242491_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208676"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242491_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208677"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242491_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208678"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242491_LG_2_AdditionalIndexMember_3YR"
      id="ixv-65116">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242491_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208679"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242491_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208680"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242491_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208681"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242491_ClassMember" id="ixv-65158">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

5.34%

5.49%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242491_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208682"
      unitRef="pure">0.0534</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242491_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208683"
      unitRef="pure">0.0549</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242491_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208684"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242491_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208685"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242491_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208686"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242491_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208687"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242491_ClassMember" id="ixv-65213">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242491_ClassMember" id="ixv-65230">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242491_ClassMember" id="ixv-65234">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242491_ClassMember" id="ixv-65240">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242491_InstantMember"
      decimals="0"
      id="ixv-208688"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242491_InstantMember"
      decimals="INF"
      id="ixv-208689"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242491_ClassMember"
      decimals="0"
      id="ixv-208690"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242491_ClassMember"
      decimals="INF"
      id="ixv-208691"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242491_ClassMember" id="ixv-65315">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242491_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208692"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208693"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208694"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208695"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208696"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242491_ClassMember" id="ixv-65419">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242491_TH_0_Member"
      decimals="INF"
      id="ixv-208697"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_1_Member"
      decimals="INF"
      id="ixv-208698"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_2_Member"
      decimals="INF"
      id="ixv-208699"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_3_Member"
      decimals="INF"
      id="ixv-208700"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_4_Member"
      decimals="INF"
      id="ixv-208701"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_5_Member"
      decimals="INF"
      id="ixv-208702"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_6_Member"
      decimals="INF"
      id="ixv-208703"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_7_Member"
      decimals="INF"
      id="ixv-208704"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242491_TH_8_Member"
      decimals="INF"
      id="ixv-208705"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242491_ClassMember" id="ixv-65534">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242491_ClassMember" id="ixv-65540">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242491_ClassMember" id="ixv-65544">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242491_ClassMember" id="ixv-65547">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242491_ClassMember" id="ixv-65551">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-65617">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000242563_ClassMember" id="ixv-65621">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000242563_ClassMember" id="ixv-65632">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242563_ClassMember" id="ixv-65635">Fidelity&#xae; Sustainable Target Date 2025 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242563_ClassMember" id="ixv-65639">FSWZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242563_ClassMember" id="ixv-65658">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242563_ClassMember" id="ixv-65660">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242563_ClassMember" id="ixv-65665">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242563_ClassMember" id="ixv-65667">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242563_ClassMember" id="ixv-65670">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242563_ClassMember" id="ixv-65673">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242563_ClassMember" id="ixv-65680">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;26&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.25&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242563_ClassMember"
      decimals="0"
      id="ixv-208706"
      unitRef="usd">26</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242563_ClassMember"
      decimals="INF"
      id="ixv-208707"
      unitRef="pure">0.0025</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242563_ClassMember" id="ixv-65722">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242563_ClassMember" id="ixv-65746">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$11,127


$11,682



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242563_LG_ClassMember_3YR" id="ixv-65765">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242563_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208708"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242563_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208709"
      unitRef="usd">11127</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242563_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208710"
      unitRef="usd">11682</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242563_LG_1_AdditionalIndexMember_3YR"
      id="ixv-65782">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242563_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208711"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242563_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208712"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242563_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208713"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242563_LG_2_AdditionalIndexMember_3YR"
      id="ixv-65799">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242563_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208714"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242563_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208715"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242563_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208716"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242563_ClassMember" id="ixv-65841">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K6

4.99%

8.57%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242563_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208717"
      unitRef="pure">0.0499</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242563_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208718"
      unitRef="pure">0.0857</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242563_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208719"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242563_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208720"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242563_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208721"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242563_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208722"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242563_ClassMember" id="ixv-65896">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242563_ClassMember" id="ixv-65913">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242563_ClassMember" id="ixv-65917">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242563_ClassMember" id="ixv-65923">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242563_InstantMember"
      decimals="0"
      id="ixv-208723"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242563_InstantMember"
      decimals="INF"
      id="ixv-208724"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242563_ClassMember"
      decimals="0"
      id="ixv-208725"
      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242563_ClassMember"
      decimals="INF"
      id="ixv-208726"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242563_ClassMember" id="ixv-65998">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242563_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208727"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208728"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208729"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208730"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242563_ClassMember" id="ixv-66089">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242563_TH_0_Member"
      decimals="INF"
      id="ixv-208731"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_TH_1_Member"
      decimals="INF"
      id="ixv-208732"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_TH_2_Member"
      decimals="INF"
      id="ixv-208733"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_TH_3_Member"
      decimals="INF"
      id="ixv-208734"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_TH_4_Member"
      decimals="INF"
      id="ixv-208735"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_TH_5_Member"
      decimals="INF"
      id="ixv-208736"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242563_TH_6_Member"
      decimals="INF"
      id="ixv-208737"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000242563_ClassMember" id="ixv-66184">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000242563_ClassMember" id="ixv-66190">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since April 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;May 30, 2025 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000242563_ClassMember" id="ixv-66194">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000242563_ClassMember" id="ixv-66197">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-835-5092&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000242563_ClassMember" id="ixv-66201">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-66267">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242577_ClassMember" id="ixv-66279">Fidelity&#xae; Sustainable Target Date 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242577_ClassMember" id="ixv-66282">Fidelity Advisor&#xae; Sustainable Target Date 2030 Fund Class C</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242577_ClassMember" id="ixv-66286">FSXCX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242577_ClassMember" id="ixv-66305">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242577_ClassMember" id="ixv-66307">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242577_ClassMember" id="ixv-66312">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242577_ClassMember" id="ixv-66314">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242577_ClassMember" id="ixv-66317">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242577_ClassMember" id="ixv-66320">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242577_ClassMember" id="ixv-66327">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;149&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;1.46&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242577_ClassMember"
      decimals="0"
      id="ixv-208738"
      unitRef="usd">149</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242577_ClassMember"
      decimals="INF"
      id="ixv-208739"
      unitRef="pure">0.0146</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242577_ClassMember" id="ixv-66369">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242577_ClassMember" id="ixv-66393">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class C


$10,000

$11,168


$11,580



Fidelity Sustainable Target Date 2030 Composite Index&#x2120;


$10,000

$11,231


$11,865



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242577_LG_ClassMember_3YR" id="ixv-66412">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class C&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242577_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208740"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242577_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208741"
      unitRef="usd">11168</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242577_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208742"
      unitRef="usd">11580</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242577_LG_1_AdditionalIndexMember_3YR"
      id="ixv-66429">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242577_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208743"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242577_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208744"
      unitRef="usd">11231</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242577_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208745"
      unitRef="usd">11865</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242577_LG_2_AdditionalIndexMember_3YR"
      id="ixv-66446">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242577_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208746"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242577_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208747"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242577_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208748"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242577_ClassMember" id="ixv-66488">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class C &#160;(incl. contingent deferred sales charge)

2.69%

8.07%


Class C

3.69%

8.07%


Fidelity Sustainable Target Date 2030 Composite Index&#x2120;

5.65%


9.47%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_ClassMember_1YR"
      decimals="INF"
      id="ixv-208749"
      unitRef="pure">0.0269</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208750"
      unitRef="pure">0.0807</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208751"
      unitRef="pure">0.0369</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208752"
      unitRef="pure">0.0807</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208753"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208754"
      unitRef="pure">0.0947</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208755"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242577_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208756"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242577_ClassMember" id="ixv-66555">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242577_ClassMember" id="ixv-66572">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242577_ClassMember" id="ixv-66576">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242577_ClassMember" id="ixv-66582">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,927,493&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;22,240&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242577_InstantMember"
      decimals="0"
      id="ixv-208757"
      unitRef="usd">6927493</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242577_InstantMember"
      decimals="INF"
      id="ixv-208758"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242577_ClassMember"
      decimals="0"
      id="ixv-208759"
      unitRef="usd">22240</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242577_ClassMember"
      decimals="INF"
      id="ixv-208760"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242577_ClassMember" id="ixv-66657">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.5


International Equity Funds

29.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 38.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 32.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 29.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242577_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208761"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208762"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208763"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208764"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242577_ClassMember" id="ixv-66748">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

32.5


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

21.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

19.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

9.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242577_TH_0_Member"
      decimals="INF"
      id="ixv-208765"
      unitRef="pure">0.325</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_TH_1_Member"
      decimals="INF"
      id="ixv-208766"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_TH_2_Member"
      decimals="INF"
      id="ixv-208767"
      unitRef="pure">0.197</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_TH_3_Member"
      decimals="INF"
      id="ixv-208768"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_TH_4_Member"
      decimals="INF"
      id="ixv-208769"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_TH_5_Member"
      decimals="INF"
      id="ixv-208770"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242577_TH_6_Member"
      decimals="INF"
      id="ixv-208771"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-66889">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242582_ClassMember" id="ixv-66901">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242582_ClassMember" id="ixv-66904">Fidelity&#xae; Sustainable Target Date 2035 Fund Class K</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242582_ClassMember" id="ixv-66908">FSXTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242582_ClassMember" id="ixv-66927">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242582_ClassMember" id="ixv-66929">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242582_ClassMember" id="ixv-66934">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242582_ClassMember" id="ixv-66936">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242582_ClassMember" id="ixv-66939">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242582_ClassMember" id="ixv-66942">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242582_ClassMember" id="ixv-66949">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.37&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242582_ClassMember"
      decimals="0"
      id="ixv-208772"
      unitRef="usd">38</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242582_ClassMember"
      decimals="INF"
      id="ixv-208773"
      unitRef="pure">0.0037</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242582_ClassMember" id="ixv-66991">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242582_ClassMember" id="ixv-67015">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class K


$10,000

$11,556


$12,128



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242582_LG_ClassMember_3YR" id="ixv-67034">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242582_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208774"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242582_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208775"
      unitRef="usd">11556</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242582_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208776"
      unitRef="usd">12128</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242582_LG_1_AdditionalIndexMember_3YR"
      id="ixv-67051">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242582_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208777"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242582_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208778"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242582_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208779"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242582_LG_2_AdditionalIndexMember_3YR"
      id="ixv-67068">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242582_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208780"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242582_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208781"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242582_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208782"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242582_ClassMember" id="ixv-67110">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class K

4.95%

10.74%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit www.401k.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
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      id="ixv-208783"
      unitRef="pure">0.0495</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="INF"
      id="ixv-208784"
      unitRef="pure">0.1074</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242582_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208785"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242582_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208786"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242582_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208787"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242582_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208788"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242582_ClassMember" id="ixv-67165">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242582_ClassMember" id="ixv-67182">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242582_ClassMember" id="ixv-67186">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242582_ClassMember" id="ixv-67192">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
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    <oef:HoldingsCount
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      id="ixv-208790"
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    <oef:AdvisoryFeesPaidAmt
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    <us-gaap:InvestmentCompanyPortfolioTurnover
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    <oef:HoldingsTableTextBlock contextRef="C000242582_ClassMember" id="ixv-67267">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242582_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208793"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208794"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208795"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208796"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242582_ClassMember" id="ixv-67358">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
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      id="ixv-208797"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_TH_1_Member"
      decimals="INF"
      id="ixv-208798"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_TH_2_Member"
      decimals="INF"
      id="ixv-208799"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_TH_3_Member"
      decimals="INF"
      id="ixv-208800"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_TH_4_Member"
      decimals="INF"
      id="ixv-208801"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_TH_5_Member"
      decimals="INF"
      id="ixv-208802"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242582_TH_6_Member"
      decimals="INF"
      id="ixv-208803"
      unitRef="pure">0.027</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-67499">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242566_ClassMember" id="ixv-67511">Fidelity&#xae; Sustainable Target Date 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242566_ClassMember" id="ixv-67514">Fidelity Advisor&#xae; Sustainable Target Date 2025 Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242566_ClassMember" id="ixv-67518">FSWVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242566_ClassMember" id="ixv-67537">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242566_ClassMember" id="ixv-67539">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242566_ClassMember" id="ixv-67544">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242566_ClassMember" id="ixv-67546">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242566_ClassMember" id="ixv-67549">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242566_ClassMember" id="ixv-67552">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242566_ClassMember" id="ixv-67559">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;36&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.35&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
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      id="ixv-208804"
      unitRef="usd">36</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242566_ClassMember"
      decimals="INF"
      id="ixv-208805"
      unitRef="pure">0.0035</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242566_ClassMember" id="ixv-67601">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242566_ClassMember" id="ixv-67625">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$11,120


$11,659



Fidelity Sustainable Target Date 2025 Composite Index&#x2120;


$10,000

$11,087


$11,705



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242566_LG_ClassMember_3YR" id="ixv-67644">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242566_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208806"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242566_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208807"
      unitRef="usd">11120</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242566_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208808"
      unitRef="usd">11659</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242566_LG_1_AdditionalIndexMember_3YR"
      id="ixv-67661">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242566_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208809"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242566_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208810"
      unitRef="usd">11087</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242566_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208811"
      unitRef="usd">11705</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242566_LG_2_AdditionalIndexMember_3YR"
      id="ixv-67678">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242566_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208812"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242566_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208813"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242566_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208814"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242566_ClassMember" id="ixv-67720">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

4.85%

8.46%


Fidelity Sustainable Target Date 2025 Composite Index&#x2120;

5.57%


8.68%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242566_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208815"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242566_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208816"
      unitRef="pure">0.0846</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242566_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208817"
      unitRef="pure">0.0557</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242566_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208818"
      unitRef="pure">0.0868</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242566_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208819"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242566_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208820"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242566_ClassMember" id="ixv-67775">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242566_ClassMember" id="ixv-67792">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242566_ClassMember" id="ixv-67796">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242566_ClassMember" id="ixv-67802">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,235,708&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,026&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;28&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242566_InstantMember"
      decimals="0"
      id="ixv-208821"
      unitRef="usd">2235708</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242566_InstantMember"
      decimals="INF"
      id="ixv-208822"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242566_ClassMember"
      decimals="0"
      id="ixv-208823"
      unitRef="usd">8026</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242566_ClassMember"
      decimals="INF"
      id="ixv-208824"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242566_ClassMember" id="ixv-67877">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.6


International Equity Funds

26.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 45.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 28.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242566_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208825"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208826"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208827"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208828"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242566_ClassMember" id="ixv-67968">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

28.6


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

23.9


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

17.8


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

11.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

8.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242566_TH_0_Member"
      decimals="INF"
      id="ixv-208829"
      unitRef="pure">0.286</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_TH_1_Member"
      decimals="INF"
      id="ixv-208830"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_TH_2_Member"
      decimals="INF"
      id="ixv-208831"
      unitRef="pure">0.178</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_TH_3_Member"
      decimals="INF"
      id="ixv-208832"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_TH_4_Member"
      decimals="INF"
      id="ixv-208833"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_TH_5_Member"
      decimals="INF"
      id="ixv-208834"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242566_TH_6_Member"
      decimals="INF"
      id="ixv-208835"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-68109">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242494_ClassMember" id="ixv-68121">Fidelity&#xae; Sustainable Target Date Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000242494_ClassMember" id="ixv-68124">Fidelity Advisor&#xae; Sustainable Target Date Income Fund Class Z</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242494_ClassMember" id="ixv-68128">FSULX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242494_ClassMember" id="ixv-68147">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242494_ClassMember" id="ixv-68149">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242494_ClassMember" id="ixv-68154">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242494_ClassMember" id="ixv-68156">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242494_ClassMember" id="ixv-68159">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242494_ClassMember" id="ixv-68162">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242494_ClassMember" id="ixv-68169">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242494_ClassMember"
      decimals="0"
      id="ixv-208836"
      unitRef="usd">32</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242494_ClassMember"
      decimals="INF"
      id="ixv-208837"
      unitRef="pure">0.0031</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242494_ClassMember" id="ixv-68211">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242494_ClassMember" id="ixv-68235">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000.
Class Z


$10,000

$10,495


$11,040



Fidelity Sustainable Target Date Income Composite Index&#x2120;


$10,000

$10,532


$11,107



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242494_LG_ClassMember_3YR" id="ixv-68254">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class Z&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242494_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208838"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242494_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208839"
      unitRef="usd">10495</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242494_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208840"
      unitRef="usd">11040</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242494_LG_1_AdditionalIndexMember_3YR"
      id="ixv-68271">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242494_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208841"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242494_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208842"
      unitRef="usd">10532</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242494_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208843"
      unitRef="usd">11107</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242494_LG_2_AdditionalIndexMember_3YR"
      id="ixv-68288">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242494_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208844"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242494_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208845"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242494_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208846"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242494_ClassMember" id="ixv-68330">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class Z

5.19%

5.37%


Fidelity Sustainable Target Date Income Composite Index&#x2120;

5.46%


5.71%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242494_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208847"
      unitRef="pure">0.0519</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242494_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208848"
      unitRef="pure">0.0537</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242494_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208849"
      unitRef="pure">0.0546</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242494_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208850"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242494_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208851"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242494_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208852"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242494_ClassMember" id="ixv-68385">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242494_ClassMember" id="ixv-68402">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242494_ClassMember" id="ixv-68406">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242494_ClassMember" id="ixv-68412">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,192,124&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,965&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242494_InstantMember"
      decimals="0"
      id="ixv-208853"
      unitRef="usd">1192124</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242494_InstantMember"
      decimals="INF"
      id="ixv-208854"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242494_ClassMember"
      decimals="0"
      id="ixv-208855"
      unitRef="usd">3965</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242494_ClassMember"
      decimals="INF"
      id="ixv-208856"
      unitRef="pure">0.23</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242494_ClassMember" id="ixv-68487">
&#160;
&#160;
&#160;
&#160;
Bond Funds

73.0


International Equity Funds

13.2


Domestic Equity Funds

9.0


Short-Term Funds

4.8


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 73.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 4.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242494_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208857"
      unitRef="pure">0.730</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208858"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208859"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208860"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208861"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242494_ClassMember" id="ixv-68591">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

43.9


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

20.5


&#160;


Fidelity Series Sustainable U.S. Market Fund

9.0


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

8.4


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

4.8


&#160;


Fidelity Series Sustainable Emerging Markets Fund

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242494_TH_0_Member"
      decimals="INF"
      id="ixv-208862"
      unitRef="pure">0.439</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_1_Member"
      decimals="INF"
      id="ixv-208863"
      unitRef="pure">0.205</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_2_Member"
      decimals="INF"
      id="ixv-208864"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_3_Member"
      decimals="INF"
      id="ixv-208865"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_4_Member"
      decimals="INF"
      id="ixv-208866"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_5_Member"
      decimals="INF"
      id="ixv-208867"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_6_Member"
      decimals="INF"
      id="ixv-208868"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_7_Member"
      decimals="INF"
      id="ixv-208869"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242494_TH_8_Member"
      decimals="INF"
      id="ixv-208870"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-68752">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242587_ClassMember" id="ixv-68764">Fidelity&#xae; Sustainable Target Date 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242587_ClassMember" id="ixv-68767">Fidelity Advisor&#xae; Sustainable Target Date 2035 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242587_ClassMember" id="ixv-68771">FSXOX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242587_ClassMember" id="ixv-68790">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242587_ClassMember" id="ixv-68792">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242587_ClassMember" id="ixv-68797">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242587_ClassMember" id="ixv-68799">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242587_ClassMember" id="ixv-68802">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242587_ClassMember" id="ixv-68805">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242587_ClassMember" id="ixv-68812">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;99&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.97&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242587_ClassMember"
      decimals="0"
      id="ixv-208871"
      unitRef="usd">99</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242587_ClassMember"
      decimals="INF"
      id="ixv-208872"
      unitRef="pure">0.0097</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242587_ClassMember" id="ixv-68854">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242587_ClassMember" id="ixv-68878">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$11,092


$11,573



Fidelity Sustainable Target Date 2035 Composite Index&#x2120;


$10,000

$11,483


$12,154



S&amp;P 500&#xae; Index


$10,000

$12,902


$13,967



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242587_LG_ClassMember_3YR" id="ixv-68899">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242587_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208873"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242587_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208874"
      unitRef="usd">11092</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242587_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208875"
      unitRef="usd">11573</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242587_LG_1_AdditionalIndexMember_3YR"
      id="ixv-68916">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242587_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208876"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242587_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208877"
      unitRef="usd">11483</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242587_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208878"
      unitRef="usd">12154</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242587_LG_2_AdditionalIndexMember_3YR"
      id="ixv-68933">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242587_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208879"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242587_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208880"
      unitRef="usd">12902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242587_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208881"
      unitRef="usd">13967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242587_ClassMember" id="ixv-68975">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.68%

8.03%


Class M (without 3.50% sales charge)

4.33%

10.09%


Fidelity Sustainable Target Date 2035 Composite Index&#x2120;

5.85%


10.87%


S&amp;P 500&#xae; Index

8.25%


19.33%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_ClassMember_1YR"
      decimals="INF"
      id="ixv-208882"
      unitRef="pure">0.0068</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208883"
      unitRef="pure">0.0803</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208884"
      unitRef="pure">0.0433</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208885"
      unitRef="pure">0.1009</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208886"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208887"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208888"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242587_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208889"
      unitRef="pure">0.1933</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242587_ClassMember" id="ixv-69041">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242587_ClassMember" id="ixv-69058">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242587_ClassMember" id="ixv-69062">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242587_ClassMember" id="ixv-69068">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,343,383&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;17,388&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242587_InstantMember"
      decimals="0"
      id="ixv-208890"
      unitRef="usd">5343383</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242587_InstantMember"
      decimals="INF"
      id="ixv-208891"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242587_ClassMember"
      decimals="0"
      id="ixv-208892"
      unitRef="usd">17388</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242587_ClassMember"
      decimals="INF"
      id="ixv-208893"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242587_ClassMember" id="ixv-69143">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.1


International Equity Funds

32.6


Bond Funds

29.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242587_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208894"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208895"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208896"
      unitRef="pure">0.293</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208897"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242587_ClassMember" id="ixv-69234">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

38.1


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

22.3


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

16.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

3.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.7


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242587_TH_0_Member"
      decimals="INF"
      id="ixv-208898"
      unitRef="pure">0.381</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_TH_1_Member"
      decimals="INF"
      id="ixv-208899"
      unitRef="pure">0.223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_TH_2_Member"
      decimals="INF"
      id="ixv-208900"
      unitRef="pure">0.161</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_TH_3_Member"
      decimals="INF"
      id="ixv-208901"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_TH_4_Member"
      decimals="INF"
      id="ixv-208902"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_TH_5_Member"
      decimals="INF"
      id="ixv-208903"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242587_TH_6_Member"
      decimals="INF"
      id="ixv-208904"
      unitRef="pure">0.027</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-69375">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000242544_ClassMember" id="ixv-69387">Fidelity&#xae; Sustainable Target Date 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000242544_ClassMember" id="ixv-69390">Fidelity Advisor&#xae; Sustainable Target Date 2010 Fund Class M</oef:ClassName>
    <dei:TradingSymbol contextRef="C000242544_ClassMember" id="ixv-69394">FSVEX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000242544_ClassMember" id="ixv-69413">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000242544_ClassMember" id="ixv-69415">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000242544_ClassMember" id="ixv-69420">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000242544_ClassMember" id="ixv-69422">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000242544_ClassMember" id="ixv-69425">1-877-208-0098</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000242544_ClassMember" id="ixv-69428">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000242544_ClassMember" id="ixv-69435">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;93&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.91&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000242544_ClassMember"
      decimals="0"
      id="ixv-208905"
      unitRef="usd">93</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000242544_ClassMember"
      decimals="INF"
      id="ixv-208906"
      unitRef="pure">0.0091</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000242544_ClassMember" id="ixv-69477">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000242544_ClassMember" id="ixv-69501">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
May 11, 2023 through March 31, 2025.
Initial investment of $10,000&#160;and the current sales charge was paid.
Class M


$9,650

$10,225


$10,690



Fidelity Sustainable Target Date 2010 Composite Index&#x2120;


$10,000

$10,666


$11,256



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,089


$10,582



&#160;

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000242544_LG_ClassMember_3YR" id="ixv-69522">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class M&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242544_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-208907"
      unitRef="usd">9650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242544_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208908"
      unitRef="usd">10225</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242544_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208909"
      unitRef="usd">10690</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242544_LG_1_AdditionalIndexMember_3YR"
      id="ixv-69539">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242544_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208910"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242544_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208911"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242544_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208912"
      unitRef="usd">11256</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000242544_LG_2_AdditionalIndexMember_3YR"
      id="ixv-69556">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg U.S. Aggregate Bond Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000242544_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-208913"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242544_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208914"
      unitRef="usd">10089</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000242544_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208915"
      unitRef="usd">10582</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000242544_ClassMember" id="ixv-69598">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Class M (incl. 3.50% sales charge) &#160;

0.89%

3.59%


Class M (without 3.50% sales charge)

4.55%

5.56%


Fidelity Sustainable Target Date 2010 Composite Index&#x2120;

5.53%


6.46%


Bloomberg U.S. Aggregate Bond Index

4.88%


3.04%




A&#160; &#160;From May 11, 2023

Visit institutional.fidelity.com for more recent performance information.
&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_ClassMember_1YR"
      decimals="INF"
      id="ixv-208916"
      unitRef="pure">0.0089</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_ClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208917"
      unitRef="pure">0.0359</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-208918"
      unitRef="pure">0.0455</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-208919"
      unitRef="pure">0.0556</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-208920"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-208921"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-208922"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000242544_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-208923"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000242544_ClassMember" id="ixv-69664">2023-05-11</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000242544_ClassMember" id="ixv-69681">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000242544_ClassMember" id="ixv-69685">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000242544_ClassMember" id="ixv-69691">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,137,721&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;9&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;3,900&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000242544_InstantMember"
      decimals="0"
      id="ixv-208924"
      unitRef="usd">1137721</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000242544_InstantMember"
      decimals="INF"
      id="ixv-208925"
      unitRef="holding">9</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000242544_ClassMember"
      decimals="0"
      id="ixv-208926"
      unitRef="usd">3900</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000242544_ClassMember"
      decimals="INF"
      id="ixv-208927"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000242544_ClassMember" id="ixv-69766">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.5


International Equity Funds

15.6


Domestic Equity Funds

12.6


Short-Term Funds

3.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 15.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242544_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208928"
      unitRef="pure">0.685</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208929"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208930"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-208931"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208932"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000242544_ClassMember" id="ixv-69870">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

41.4


&#160;


Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

16.4


&#160;


Fidelity Series Sustainable U.S. Market Fund

12.6


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

10.1


&#160;


Fidelity Series Sustainable Emerging Markets Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.2


&#160;


Fidelity Series Treasury Bill Index Fund

3.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000242544_TH_0_Member"
      decimals="INF"
      id="ixv-208933"
      unitRef="pure">0.414</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_1_Member"
      decimals="INF"
      id="ixv-208934"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_2_Member"
      decimals="INF"
      id="ixv-208935"
      unitRef="pure">0.126</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_3_Member"
      decimals="INF"
      id="ixv-208936"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_4_Member"
      decimals="INF"
      id="ixv-208937"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_5_Member"
      decimals="INF"
      id="ixv-208938"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_6_Member"
      decimals="INF"
      id="ixv-208939"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_7_Member"
      decimals="INF"
      id="ixv-208940"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000242544_TH_8_Member"
      decimals="INF"
      id="ixv-208941"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-70031">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250742_ClassMember" id="ixv-70043">Fidelity&#xae; Sustainable Target Date 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250742_ClassMember" id="ixv-70046">Fidelity&#xae; Sustainable Target Date 2070 Fund Class K6</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250742_ClassMember" id="ixv-70050">FRCVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250742_ClassMember" id="ixv-70069">This annual shareholder report contains information about Fidelity&#xae; Sustainable Target Date 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250742_ClassMember" id="ixv-70071">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250742_ClassMember" id="ixv-70076">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250742_ClassMember" id="ixv-70078">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250742_ClassMember" id="ixv-70081">1-800-835-5092</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250742_ClassMember" id="ixv-70084">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250742_ClassMember" id="ixv-70091">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;22&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.29&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Expenses for the full reporting period would be higher.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000250742_ClassMember"
      decimals="0"
      id="ixv-208942"
      unitRef="usd">22</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250742_ClassMember"
      decimals="INF"
      id="ixv-208943"
      unitRef="pure">0.0029</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250742_ClassMember" id="ixv-70134">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250742_ClassMember" id="ixv-70140">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Global risk assets largely achieved positive results for the 12 months ending March 31, 2025, influenced by an expanding global economy, a slowing in the pace of inflation in certain markets and a pivot by some central banks toward monetary easing, despite ongoing geopolitical risk.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, an underweight in U.S. equities and investment performance among the underlying U.S. equity portfolio notably detracted from the fund's performance versus the composite index for the fiscal year.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Within non-U.S. equities, investment performance among the underlying investment portfolios also detracted on a relative basis, especially in emerging-markets equities. An underweight allocation, on average, in U.S. investment-grade bonds also hurt.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;From an underlying portfolio standpoint, the largest individual relative detractor this period was an investment in Fidelity Series Sustainable U.S. Markets Fund (+5.04%), which trailed its benchmark, the MSCI USA IMI ESG Focus Dynamic Weighted Index (+5.98%) for the 12 months.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Also detracting was Fidelity Series Sustainable Emerging Markets Fund (+7.59%), which lagged the 9.81% return of its benchmark, the MSCI EM ESG Focus Index.&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the biggest contributor versus the composite index was an overweight allocation to non-U.S. equities. Also helping was the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Sustainable Investment Grade Bond Fund gained 5.25% for the period, topping the 4.90% advance of the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000250742_ClassMember" id="ixv-70164">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $10,000.
Class K6


$10,000

$10,288



Fidelity Sustainable Target Date 2070 Composite Index &#160;&#x2120;


$10,000

$10,385



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250742_LG_ClassMember_2YR" id="ixv-70183">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Class K6&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250742_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-208944"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250742_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-208945"
      unitRef="usd">10288</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250742_LG_1_AdditionalIndexMember_2YR"
      id="ixv-70196">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Sustainable Target Date 2070 Composite Index &lt;span&gt;&#160;&lt;/span&gt;&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250742_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208946"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250742_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208947"
      unitRef="usd">10385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250742_LG_2_AdditionalIndexMember_2YR"
      id="ixv-70210">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250742_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-208948"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250742_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-208949"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250742_ClassMember" id="ixv-70245">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of March 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;714,642&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000250742_InstantMember"
      decimals="0"
      id="ixv-208950"
      unitRef="usd">714642</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250742_InstantMember"
      decimals="INF"
      id="ixv-208951"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250742_ClassMember"
      decimals="0"
      id="ixv-208952"
      unitRef="usd">2080</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250742_ClassMember"
      decimals="INF"
      id="ixv-208953"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250742_ClassMember" id="ixv-70320">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

51.5


International Equity Funds

41.5


Bond Funds

7.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 51.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 41.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 7.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.0


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250742_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-208954"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-208955"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-208956"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-208957"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250742_ClassMember" id="ixv-70411">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Sustainable U.S. Market Fund

51.5


&#160;


Fidelity Series Sustainable Non-U.S. Developed Markets Fund

28.7


&#160;


Fidelity Series Sustainable Emerging Markets Fund

12.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Sustainable Investment Grade Bond Fund

0.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

0.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250742_TH_0_Member"
      decimals="INF"
      id="ixv-208958"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_TH_1_Member"
      decimals="INF"
      id="ixv-208959"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_TH_2_Member"
      decimals="INF"
      id="ixv-208960"
      unitRef="pure">0.128</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_TH_3_Member"
      decimals="INF"
      id="ixv-208961"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_TH_4_Member"
      decimals="INF"
      id="ixv-208962"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250742_TH_5_Member"
      decimals="INF"
      id="ixv-208963"
      unitRef="pure">0.000</oef:PctOfNav>
</xbrl>
