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    <unit id="usd">
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    <oef:MaterialFundChngNoticeTextBlock contextRef="C000212317_ClassMember" id="ixv-112">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
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    <oef:ClassName contextRef="C000212317_ClassMember" id="ixv-126">Fidelity Flex&#xae; Freedom Blend 2065 Fund</oef:ClassName>
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    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000212317_ClassMember" id="ixv-149">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000212317_ClassMember" id="ixv-151">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000212317_ClassMember" id="ixv-156">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
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    <oef:ExpensesTextBlock contextRef="C000212317_ClassMember" id="ixv-171">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2065 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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
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      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000212317_ClassMember"
      decimals="INF"
      id="ixv-209940"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000212317_ClassMember" id="ixv-223">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000212317_ClassMember" id="ixv-254">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2019 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2065 Fund


$10,000

$8,690


$13,613


$14,138


$13,202


$16,038


$16,991



Fidelity Freedom 2065 Composite Index&#x2120;


$10,000

$8,783


$13,174


$13,882


$12,862


$15,453


$16,465



S&amp;P 500&#xae; Index


$10,000

$8,918


$13,944


$16,126


$14,879


$19,326


$20,920



&#160;

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000212317_LG_ClassMember_7YR" id="ixv-273">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2065 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000212317_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-209941"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-209942"
      unitRef="usd">8690</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-209943"
      unitRef="usd">13613</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-209944"
      unitRef="usd">14138</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-209945"
      unitRef="usd">13202</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-209946"
      unitRef="usd">16038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-209947"
      unitRef="usd">16991</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000212317_LG_1_AdditionalIndexMember_7YR"
      id="ixv-306">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000212317_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-209948"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-209949"
      unitRef="usd">8783</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-209950"
      unitRef="usd">13174</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-209951"
      unitRef="usd">13882</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-209952"
      unitRef="usd">12862</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-209953"
      unitRef="usd">15453</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-209954"
      unitRef="usd">16465</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000212317_LG_2_AdditionalIndexMember_7YR"
      id="ixv-339">&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="C000212317_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-209955"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-209956"
      unitRef="usd">8918</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-209957"
      unitRef="usd">13944</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-209958"
      unitRef="usd">16126</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-209959"
      unitRef="usd">14879</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-209960"
      unitRef="usd">19326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212317_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-209961"
      unitRef="usd">20920</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000212317_ClassMember" id="ixv-409">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2065 Fund

5.94%

14.35%

9.66%


Fidelity Freedom 2065 Composite Index&#x2120;

6.55%


13.39%


9.06%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.70%




A&#160; &#160;From June 28, 2019

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="C000212317_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-209962"
      unitRef="pure">0.0594</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-209963"
      unitRef="pure">0.1435</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-209964"
      unitRef="pure">0.0966</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-209965"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-209966"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-209967"
      unitRef="pure">0.0906</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-209968"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-209969"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212317_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-209970"
      unitRef="pure">0.1370</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000212317_ClassMember" id="ixv-478">2019-06-28</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000212317_ClassMember" id="ixv-495">&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="C000212317_ClassMember" id="ixv-499">&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="C000212317_ClassMember" id="ixv-505">&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;$&lt;/span&gt;11,446,152&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000212317_InstantMember"
      decimals="0"
      id="ixv-209971"
      unitRef="usd">11446152</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000212317_InstantMember"
      decimals="INF"
      id="ixv-209972"
      unitRef="holding">23</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000212317_ClassMember"
      decimals="0"
      id="ixv-209973"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000212317_ClassMember"
      decimals="INF"
      id="ixv-209974"
      unitRef="pure">0.32</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000212317_ClassMember" id="ixv-580">
&#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="C000212317_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-209975"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-209976"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-209977"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-209978"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000212317_ClassMember" id="ixv-671">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

14.6


&#160;


Fidelity Series Blue Chip Growth Fund

12.0


&#160;


Fidelity Series Emerging Markets Opportunities Fund

10.4


&#160;


Fidelity Series Large Cap Growth Index Fund

7.7


&#160;


Fidelity Series International Growth Fund

7.2


&#160;


Fidelity Series Overseas Fund

7.1


&#160;


Fidelity Series International Value Fund

7.1


&#160;


Fidelity Series Large Cap Stock Fund

7.1


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Value Discovery Fund

5.3


&#160;


&#160;

85.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000212317_TH_0_Member"
      decimals="INF"
      id="ixv-209979"
      unitRef="pure">0.146</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_1_Member"
      decimals="INF"
      id="ixv-209980"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_2_Member"
      decimals="INF"
      id="ixv-209981"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_3_Member"
      decimals="INF"
      id="ixv-209982"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_4_Member"
      decimals="INF"
      id="ixv-209983"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_5_Member"
      decimals="INF"
      id="ixv-209984"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_6_Member"
      decimals="INF"
      id="ixv-209985"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_7_Member"
      decimals="INF"
      id="ixv-209986"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_8_Member"
      decimals="INF"
      id="ixv-209987"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212317_TH_9_Member"
      decimals="INF"
      id="ixv-209988"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000212317_ClassMember" id="ixv-796">
&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;1-800-544-3455&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="C000212317_ClassMember" id="ixv-802">&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;1-800-544-3455&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="C000212317_ClassMember" id="ixv-806">&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="C000212317_ClassMember" id="ixv-809">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000212317_ClassMember" id="ixv-813">&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="C000212317_ClassMember" id="ixv-824">&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-882">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000144493_ClassMember" id="ixv-894">Fidelity Freedom&#xae; Index 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000144493_ClassMember" id="ixv-897">Fidelity Freedom&#xae; Index 2060 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000144493_ClassMember" id="ixv-901">FDKLX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000144493_ClassMember" id="ixv-920">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000144493_ClassMember" id="ixv-922">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000144493_ClassMember" id="ixv-927">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="C000144493_ClassMember" id="ixv-929">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000144493_ClassMember" id="ixv-932">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000144493_ClassMember" id="ixv-935">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000144493_ClassMember" id="ixv-942">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000144493_ClassMember"
      decimals="0"
      id="ixv-209989"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000144493_ClassMember"
      decimals="INF"
      id="ixv-209990"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000144493_ClassMember" id="ixv-984">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000144493_ClassMember" id="ixv-1008">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,706


$11,143


$12,610


$13,182


$12,002


$17,990


$18,866


$17,521


$20,999


$22,385



Fidelity Freedom Index 2060 Composite Index&#x2120;


$10,000

$9,728


$11,177


$12,651


$13,260


$12,095


$18,143


$19,118


$17,714


$21,282


$22,675



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000144493_LG_ClassMember_11YR" id="ixv-1027">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-209991"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-209992"
      unitRef="usd">9706</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-209993"
      unitRef="usd">11143</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-209994"
      unitRef="usd">12610</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-209995"
      unitRef="usd">13182</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-209996"
      unitRef="usd">12002</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-209997"
      unitRef="usd">17990</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-209998"
      unitRef="usd">18866</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-209999"
      unitRef="usd">17521</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210000"
      unitRef="usd">20999</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210001"
      unitRef="usd">22385</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000144493_LG_1_AdditionalIndexMember_11YR"
      id="ixv-1076">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210002"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210003"
      unitRef="usd">9728</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210004"
      unitRef="usd">11177</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210005"
      unitRef="usd">12651</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210006"
      unitRef="usd">13260</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210007"
      unitRef="usd">12095</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210008"
      unitRef="usd">18143</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210009"
      unitRef="usd">19118</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210010"
      unitRef="usd">17714</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210011"
      unitRef="usd">21282</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210012"
      unitRef="usd">22675</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000144493_LG_2_AdditionalIndexMember_11YR"
      id="ixv-1125">&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="C000144493_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210013"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210014"
      unitRef="usd">10178</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210015"
      unitRef="usd">11926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210016"
      unitRef="usd">13595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210017"
      unitRef="usd">14886</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210018"
      unitRef="usd">13847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210019"
      unitRef="usd">21650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210020"
      unitRef="usd">25038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210021"
      unitRef="usd">23103</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210022"
      unitRef="usd">30006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000144493_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210023"
      unitRef="usd">32482</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000144493_ClassMember" id="ixv-1223">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

6.60%

13.28%

8.39%


Fidelity Freedom Index 2060 Composite Index&#x2120;

6.55%


13.39%


8.53%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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="C000144493_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210024"
      unitRef="pure">0.0660</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210025"
      unitRef="pure">0.1328</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-210026"
      unitRef="pure">0.0839</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210027"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210028"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-210029"
      unitRef="pure">0.0853</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210030"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210031"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000144493_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-210032"
      unitRef="pure">0.1250</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000144493_ClassMember" id="ixv-1300">&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="C000144493_ClassMember" id="ixv-1304">&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="C000144493_ClassMember" id="ixv-1310">&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;$&lt;/span&gt;8,623,848,580&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,700,606&lt;/div&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;11&lt;span 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="C000144493_InstantMember"
      decimals="0"
      id="ixv-210033"
      unitRef="usd">8623848580</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000144493_InstantMember"
      decimals="INF"
      id="ixv-210034"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000144493_ClassMember"
      decimals="0"
      id="ixv-210035"
      unitRef="usd">5700606</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000144493_ClassMember"
      decimals="INF"
      id="ixv-210036"
      unitRef="pure">0.11</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000144493_ClassMember" id="ixv-1385">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000144493_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210037"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000144493_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210038"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000144493_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210039"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000144493_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210040"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000144493_ClassMember" id="ixv-1476">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000144493_TH_0_Member"
      decimals="INF"
      id="ixv-210041"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000144493_TH_1_Member"
      decimals="INF"
      id="ixv-210042"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000144493_TH_2_Member"
      decimals="INF"
      id="ixv-210043"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000144493_TH_3_Member"
      decimals="INF"
      id="ixv-210044"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000144493_TH_4_Member"
      decimals="INF"
      id="ixv-210045"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-1597">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220385_ClassMember" id="ixv-1601">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220385_ClassMember" id="ixv-1612">Fidelity Freedom&#xae; Index 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220385_ClassMember" id="ixv-1615">Fidelity Freedom&#xae; Index 2020 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220385_ClassMember" id="ixv-1619">FKIPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220385_ClassMember" id="ixv-1638">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220385_ClassMember" id="ixv-1640">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220385_ClassMember" id="ixv-1645">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220385_ClassMember" id="ixv-1647">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220385_ClassMember" id="ixv-1650">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220385_ClassMember" id="ixv-1653">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220385_ClassMember" id="ixv-1660">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220385_ClassMember"
      decimals="0"
      id="ixv-210046"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220385_ClassMember"
      decimals="INF"
      id="ixv-210047"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220385_ClassMember" id="ixv-1702">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220385_ClassMember" id="ixv-1726">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,296,634,004


$2,330,272,136


$2,182,539,986


$2,411,988,961


$2,553,446,120



Fidelity Freedom Index 2020 Composite Index&#x2120;


$2,000,000,000

$2,296,214,892


$2,336,092,217


$2,184,563,190


$2,418,510,242


$2,557,828,211



Bloomberg U.S. Aggregate Bond Index


$2,000,000,000

$1,961,896,920


$1,880,437,250


$1,790,490,276


$1,820,891,361


$1,909,743,644



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220385_LG_ClassMember_6YR" id="ixv-1745">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220385_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210048"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210049"
      unitRef="usd">2296634004</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210050"
      unitRef="usd">2330272136</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210051"
      unitRef="usd">2182539986</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210052"
      unitRef="usd">2411988961</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210053"
      unitRef="usd">2553446120</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220385_LG_1_AdditionalIndexMember_6YR"
      id="ixv-1774">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220385_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210054"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210055"
      unitRef="usd">2296214892</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210056"
      unitRef="usd">2336092217</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210057"
      unitRef="usd">2184563190</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210058"
      unitRef="usd">2418510242</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210059"
      unitRef="usd">2557828211</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220385_LG_2_AdditionalIndexMember_6YR"
      id="ixv-1803">&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="C000220385_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210060"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210061"
      unitRef="usd">1961896920</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210062"
      unitRef="usd">1880437250</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210063"
      unitRef="usd">1790490276</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210064"
      unitRef="usd">1820891361</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220385_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210065"
      unitRef="usd">1909743644</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220385_ClassMember" id="ixv-1866">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

5.86%

5.26%


Fidelity Freedom Index 2020 Composite Index&#x2120;

5.76%


5.29%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.96%




A&#160; &#160;From June 24, 2020

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="C000220385_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210066"
      unitRef="pure">0.0586</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220385_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210067"
      unitRef="pure">0.0526</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220385_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210068"
      unitRef="pure">0.0576</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220385_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210069"
      unitRef="pure">0.0529</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220385_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210070"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220385_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210071"
      unitRef="pure">-0.0096</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220385_ClassMember" id="ixv-1922">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220385_ClassMember" id="ixv-1939">&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="C000220385_ClassMember" id="ixv-1943">&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="C000220385_ClassMember" id="ixv-1949">&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;$&lt;/span&gt;6,702,986,914&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,494,444&lt;/div&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;13&lt;span 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="C000220385_InstantMember"
      decimals="0"
      id="ixv-210072"
      unitRef="usd">6702986914</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220385_InstantMember"
      decimals="INF"
      id="ixv-210073"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220385_ClassMember"
      decimals="0"
      id="ixv-210074"
      unitRef="usd">5494444</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220385_ClassMember"
      decimals="INF"
      id="ixv-210075"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220385_ClassMember" id="ixv-2024">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.7


Domestic Equity Funds

26.3


International Equity Funds

17.4


Short-Term Funds

2.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.7&#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 - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 17.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 2.6&#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="C000220385_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210076"
      unitRef="pure">0.537</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210077"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210078"
      unitRef="pure">0.174</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-210079"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210080"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220385_ClassMember" id="ixv-2128">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

33.4


&#160;


Fidelity Series Total Market Index Fund

26.3


&#160;


Fidelity Series Global ex U.S. Index Fund

17.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

7.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


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

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.6


&#160;


Fidelity Series Treasury Bill Index Fund

2.6


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220385_TH_0_Member"
      decimals="INF"
      id="ixv-210081"
      unitRef="pure">0.334</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_TH_1_Member"
      decimals="INF"
      id="ixv-210082"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_TH_2_Member"
      decimals="INF"
      id="ixv-210083"
      unitRef="pure">0.174</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_TH_3_Member"
      decimals="INF"
      id="ixv-210084"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_TH_4_Member"
      decimals="INF"
      id="ixv-210085"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_TH_5_Member"
      decimals="INF"
      id="ixv-210086"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_TH_6_Member"
      decimals="INF"
      id="ixv-210087"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220385_TH_7_Member"
      decimals="INF"
      id="ixv-210088"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220385_ClassMember" id="ixv-2233">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220385_ClassMember" id="ixv-2239">&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;1-800-544-3455&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="C000220385_ClassMember" id="ixv-2243">&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="C000220385_ClassMember" id="ixv-2246">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220385_ClassMember" id="ixv-2250">&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="C000220385_ClassMember" id="ixv-2261">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-2326">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252919_ClassMember" id="ixv-2338">Fidelity Freedom&#xae; Index 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252919_ClassMember" id="ixv-2341">Fidelity Freedom&#xae; Index 2030 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252919_ClassMember" id="ixv-2345">FAUYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252919_ClassMember" id="ixv-2364">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2030 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252919_ClassMember" id="ixv-2366">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252919_ClassMember" id="ixv-2371">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252919_ClassMember" id="ixv-2373">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252919_ClassMember" id="ixv-2376">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252919_ClassMember" id="ixv-2379">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252919_ClassMember" id="ixv-2386">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252919_ClassMember"
      decimals="0"
      id="ixv-210089"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252919_ClassMember"
      decimals="INF"
      id="ixv-210090"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252919_ClassMember" id="ixv-2429">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252919_ClassMember" id="ixv-2435">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252919_ClassMember" id="ixv-2459">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,059,768,521



Fidelity Freedom Index 2030 Composite Index&#x2120;


$5,000,000,000

$5,051,246,961



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252919_LG_ClassMember_2YR" id="ixv-2478">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252919_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210091"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252919_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210092"
      unitRef="usd">5059768521</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252919_LG_1_AdditionalIndexMember_2YR"
      id="ixv-2491">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252919_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210093"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252919_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210094"
      unitRef="usd">5051246961</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252919_LG_2_AdditionalIndexMember_2YR"
      id="ixv-2504">&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="C000252919_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210095"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252919_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210096"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252919_ClassMember" id="ixv-2539">&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;$&lt;/span&gt;22,276,385,405&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,374,719&lt;/div&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;14&lt;span 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="C000252919_InstantMember"
      decimals="0"
      id="ixv-210097"
      unitRef="usd">22276385405</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252919_InstantMember"
      decimals="INF"
      id="ixv-210098"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252919_ClassMember"
      decimals="0"
      id="ixv-210099"
      unitRef="usd">16374719</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252919_ClassMember"
      decimals="INF"
      id="ixv-210100"
      unitRef="pure">0.14</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252919_ClassMember" id="ixv-2614">
&#160;
&#160;
&#160;
&#160;
Bond Funds

41.5


Domestic Equity Funds

35.2


International Equity Funds

23.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 41.5&#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 - 35.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 23.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252919_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210101"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210102"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210103"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210104"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252919_ClassMember" id="ixv-2705">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

35.2


&#160;


Fidelity Series Bond Index Fund

26.6


&#160;


Fidelity Series Global ex U.S. Index Fund

23.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252919_TH_0_Member"
      decimals="INF"
      id="ixv-210105"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_TH_1_Member"
      decimals="INF"
      id="ixv-210106"
      unitRef="pure">0.266</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_TH_2_Member"
      decimals="INF"
      id="ixv-210107"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_TH_3_Member"
      decimals="INF"
      id="ixv-210108"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_TH_4_Member"
      decimals="INF"
      id="ixv-210109"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252919_TH_5_Member"
      decimals="INF"
      id="ixv-210110"
      unitRef="pure">0.044</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-2836">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157965_ClassMember" id="ixv-2848">Fidelity Freedom&#xae; Index 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157965_ClassMember" id="ixv-2851">Fidelity Freedom&#xae; Index 2030 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157965_ClassMember" id="ixv-2855">FFEGX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157965_ClassMember" id="ixv-2874">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157965_ClassMember" id="ixv-2876">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157965_ClassMember" id="ixv-2881">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="C000157965_ClassMember" id="ixv-2883">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157965_ClassMember" id="ixv-2886">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157965_ClassMember" id="ixv-2889">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157965_ClassMember" id="ixv-2896">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157965_ClassMember"
      decimals="0"
      id="ixv-210111"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157965_ClassMember"
      decimals="INF"
      id="ixv-210112"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157965_ClassMember" id="ixv-2938">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157965_ClassMember" id="ixv-2962">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,785,817


$5,414,084


$6,030,953


$6,321,817


$6,043,767


$8,183,769


$8,393,706


$7,839,356


$8,890,744


$9,423,574



Fidelity Freedom Index 2030 Composite Index&#x2120;


$5,000,000

$4,788,996


$5,417,916


$6,037,392


$6,338,865


$6,066,232


$8,224,937


$8,460,928


$7,888,237


$8,965,643


$9,495,808



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157965_LG_ClassMember_11YR" id="ixv-2981">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-210113"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-210114"
      unitRef="usd">4785817</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210115"
      unitRef="usd">5414084</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210116"
      unitRef="usd">6030953</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210117"
      unitRef="usd">6321817</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210118"
      unitRef="usd">6043767</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210119"
      unitRef="usd">8183769</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210120"
      unitRef="usd">8393706</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210121"
      unitRef="usd">7839356</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210122"
      unitRef="usd">8890744</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210123"
      unitRef="usd">9423574</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157965_LG_1_AdditionalIndexMember_11YR"
      id="ixv-3030">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210124"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210125"
      unitRef="usd">4788996</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210126"
      unitRef="usd">5417916</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210127"
      unitRef="usd">6037392</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210128"
      unitRef="usd">6338865</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210129"
      unitRef="usd">6066232</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210130"
      unitRef="usd">8224937</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210131"
      unitRef="usd">8460928</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210132"
      unitRef="usd">7888237</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210133"
      unitRef="usd">8965643</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210134"
      unitRef="usd">9495808</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157965_LG_2_AdditionalIndexMember_11YR"
      id="ixv-3079">&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="C000157965_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210135"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210136"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210137"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210138"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210139"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210140"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210141"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210142"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210143"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210144"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157965_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210145"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157965_ClassMember" id="ixv-3177">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

5.99%

9.29%

6.70%


Fidelity Freedom Index 2030 Composite Index&#x2120;

5.91%


9.38%


6.78%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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="C000157965_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210146"
      unitRef="pure">0.0599</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210147"
      unitRef="pure">0.0929</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210148"
      unitRef="pure">0.0670</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210149"
      unitRef="pure">0.0591</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210150"
      unitRef="pure">0.0938</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210151"
      unitRef="pure">0.0678</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210152"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210153"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157965_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210154"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157965_ClassMember" id="ixv-3246">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157965_ClassMember" id="ixv-3263">&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="C000157965_ClassMember" id="ixv-3267">&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="C000157965_ClassMember" id="ixv-3273">&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;$&lt;/span&gt;22,276,385,405&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,374,719&lt;/div&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;14&lt;span 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="C000157965_InstantMember"
      decimals="0"
      id="ixv-210155"
      unitRef="usd">22276385405</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157965_InstantMember"
      decimals="INF"
      id="ixv-210156"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157965_ClassMember"
      decimals="0"
      id="ixv-210157"
      unitRef="usd">16374719</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157965_ClassMember"
      decimals="INF"
      id="ixv-210158"
      unitRef="pure">0.14</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157965_ClassMember" id="ixv-3348">
&#160;
&#160;
&#160;
&#160;
Bond Funds

41.5


Domestic Equity Funds

35.2


International Equity Funds

23.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 41.5&#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 - 35.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 23.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157965_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210159"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210160"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210161"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210162"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157965_ClassMember" id="ixv-3439">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

35.2


&#160;


Fidelity Series Bond Index Fund

26.6


&#160;


Fidelity Series Global ex U.S. Index Fund

23.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157965_TH_0_Member"
      decimals="INF"
      id="ixv-210163"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_TH_1_Member"
      decimals="INF"
      id="ixv-210164"
      unitRef="pure">0.266</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_TH_2_Member"
      decimals="INF"
      id="ixv-210165"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_TH_3_Member"
      decimals="INF"
      id="ixv-210166"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_TH_4_Member"
      decimals="INF"
      id="ixv-210167"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157965_TH_5_Member"
      decimals="INF"
      id="ixv-210168"
      unitRef="pure">0.044</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-3570">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079278_ClassMember" id="ixv-3582">Fidelity Freedom&#xae; Index 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079278_ClassMember" id="ixv-3585">Fidelity Freedom&#xae; Index 2050 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079278_ClassMember" id="ixv-3589">FIPFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079278_ClassMember" id="ixv-3608">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079278_ClassMember" id="ixv-3610">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079278_ClassMember" id="ixv-3615">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="C000079278_ClassMember" id="ixv-3617">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079278_ClassMember" id="ixv-3620">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079278_ClassMember" id="ixv-3623">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079278_ClassMember" id="ixv-3630">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079278_ClassMember"
      decimals="0"
      id="ixv-210169"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079278_ClassMember"
      decimals="INF"
      id="ixv-210170"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079278_ClassMember" id="ixv-3672">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079278_ClassMember" id="ixv-3696">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,708


$11,147


$12,613


$13,185


$12,005


$17,999


$18,879


$17,531


$21,010


$22,397



Fidelity Freedom Index 2050 Composite Index&#x2120;


$10,000

$9,728


$11,177


$12,651


$13,260


$12,095


$18,143


$19,118


$17,714


$21,282


$22,675



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079278_LG_ClassMember_11YR" id="ixv-3715">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-210171"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-210172"
      unitRef="usd">9708</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210173"
      unitRef="usd">11147</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210174"
      unitRef="usd">12613</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210175"
      unitRef="usd">13185</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210176"
      unitRef="usd">12005</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210177"
      unitRef="usd">17999</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210178"
      unitRef="usd">18879</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210179"
      unitRef="usd">17531</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210180"
      unitRef="usd">21010</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210181"
      unitRef="usd">22397</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079278_LG_1_AdditionalIndexMember_11YR"
      id="ixv-3764">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210182"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210183"
      unitRef="usd">9728</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210184"
      unitRef="usd">11177</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210185"
      unitRef="usd">12651</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210186"
      unitRef="usd">13260</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210187"
      unitRef="usd">12095</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210188"
      unitRef="usd">18143</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210189"
      unitRef="usd">19118</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210190"
      unitRef="usd">17714</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210191"
      unitRef="usd">21282</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210192"
      unitRef="usd">22675</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079278_LG_2_AdditionalIndexMember_11YR"
      id="ixv-3813">&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="C000079278_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210193"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210194"
      unitRef="usd">10178</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210195"
      unitRef="usd">11926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210196"
      unitRef="usd">13595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210197"
      unitRef="usd">14886</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210198"
      unitRef="usd">13847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210199"
      unitRef="usd">21650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210200"
      unitRef="usd">25038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210201"
      unitRef="usd">23103</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210202"
      unitRef="usd">30006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079278_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210203"
      unitRef="usd">32482</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079278_ClassMember" id="ixv-3911">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

6.60%

13.28%

8.40%


Fidelity Freedom Index 2050 Composite Index&#x2120;

6.55%


13.39%


8.53%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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-210204"
      unitRef="pure">0.0660</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210205"
      unitRef="pure">0.1328</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-210206"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210207"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210208"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-210209"
      unitRef="pure">0.0853</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210210"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210211"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079278_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-210212"
      unitRef="pure">0.1250</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079278_ClassMember" id="ixv-3988">&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="C000079278_ClassMember" id="ixv-3992">&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="C000079278_ClassMember" id="ixv-3998">&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;$&lt;/span&gt;20,141,523,508&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,737,175&lt;/div&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;12&lt;span 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="C000079278_InstantMember"
      decimals="0"
      id="ixv-210213"
      unitRef="usd">20141523508</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000079278_InstantMember"
      decimals="INF"
      id="ixv-210214"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000079278_ClassMember"
      decimals="0"
      id="ixv-210215"
      unitRef="usd">13737175</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000079278_ClassMember"
      decimals="INF"
      id="ixv-210216"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000079278_ClassMember" id="ixv-4073">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000079278_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210217"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079278_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210218"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079278_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210219"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079278_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210220"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000079278_ClassMember" id="ixv-4164">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079278_TH_0_Member"
      decimals="INF"
      id="ixv-210221"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079278_TH_1_Member"
      decimals="INF"
      id="ixv-210222"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079278_TH_2_Member"
      decimals="INF"
      id="ixv-210223"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079278_TH_3_Member"
      decimals="INF"
      id="ixv-210224"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079278_TH_4_Member"
      decimals="INF"
      id="ixv-210225"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-4285">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079277_ClassMember" id="ixv-4297">Fidelity Freedom&#xae; Index 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079277_ClassMember" id="ixv-4300">Fidelity Freedom&#xae; Index 2045 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079277_ClassMember" id="ixv-4304">FIOFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079277_ClassMember" id="ixv-4323">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079277_ClassMember" id="ixv-4325">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079277_ClassMember" id="ixv-4330">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="C000079277_ClassMember" id="ixv-4332">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079277_ClassMember" id="ixv-4335">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079277_ClassMember" id="ixv-4338">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079277_ClassMember" id="ixv-4345">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079277_ClassMember"
      decimals="0"
      id="ixv-210226"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079277_ClassMember"
      decimals="INF"
      id="ixv-210227"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079277_ClassMember" id="ixv-4387">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079277_ClassMember" id="ixv-4411">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,712


$11,156


$12,615


$13,193


$12,010


$18,002


$18,881


$17,539


$21,020


$22,402



Fidelity Freedom Index 2045 Composite Index&#x2120;


$10,000

$9,728


$11,177


$12,651


$13,260


$12,095


$18,143


$19,118


$17,714


$21,282


$22,675



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079277_LG_ClassMember_11YR" id="ixv-4430">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-210228"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-210229"
      unitRef="usd">9712</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210230"
      unitRef="usd">11156</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210231"
      unitRef="usd">12615</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210232"
      unitRef="usd">13193</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210233"
      unitRef="usd">12010</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210234"
      unitRef="usd">18002</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210235"
      unitRef="usd">18881</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210236"
      unitRef="usd">17539</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210237"
      unitRef="usd">21020</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210238"
      unitRef="usd">22402</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079277_LG_1_AdditionalIndexMember_11YR"
      id="ixv-4479">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210239"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210240"
      unitRef="usd">9728</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210241"
      unitRef="usd">11177</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210242"
      unitRef="usd">12651</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210243"
      unitRef="usd">13260</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210244"
      unitRef="usd">12095</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210245"
      unitRef="usd">18143</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210246"
      unitRef="usd">19118</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210247"
      unitRef="usd">17714</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210248"
      unitRef="usd">21282</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210249"
      unitRef="usd">22675</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079277_LG_2_AdditionalIndexMember_11YR"
      id="ixv-4528">&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="C000079277_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210250"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210251"
      unitRef="usd">10178</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210252"
      unitRef="usd">11926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210253"
      unitRef="usd">13595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210254"
      unitRef="usd">14886</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210255"
      unitRef="usd">13847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210256"
      unitRef="usd">21650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210257"
      unitRef="usd">25038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210258"
      unitRef="usd">23103</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210259"
      unitRef="usd">30006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079277_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210260"
      unitRef="usd">32482</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079277_ClassMember" id="ixv-4626">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

6.58%

13.28%

8.40%


Fidelity Freedom Index 2045 Composite Index&#x2120;

6.55%


13.39%


8.53%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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="C000079277_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210261"
      unitRef="pure">0.0658</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210262"
      unitRef="pure">0.1328</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-210263"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210264"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210265"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-210266"
      unitRef="pure">0.0853</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210267"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210268"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079277_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-210269"
      unitRef="pure">0.1250</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079277_ClassMember" id="ixv-4703">&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="C000079277_ClassMember" id="ixv-4707">&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="C000079277_ClassMember" id="ixv-4713">&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;$&lt;/span&gt;20,980,633,428&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;14,374,153&lt;/div&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;13&lt;span 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="C000079277_InstantMember"
      decimals="0"
      id="ixv-210270"
      unitRef="usd">20980633428</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000079277_InstantMember"
      decimals="INF"
      id="ixv-210271"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000079277_ClassMember"
      decimals="0"
      id="ixv-210272"
      unitRef="usd">14374153</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000079277_ClassMember"
      decimals="INF"
      id="ixv-210273"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000079277_ClassMember" id="ixv-4788">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000079277_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210274"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079277_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210275"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079277_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210276"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079277_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210277"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000079277_ClassMember" id="ixv-4879">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079277_TH_0_Member"
      decimals="INF"
      id="ixv-210278"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079277_TH_1_Member"
      decimals="INF"
      id="ixv-210279"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079277_TH_2_Member"
      decimals="INF"
      id="ixv-210280"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079277_TH_3_Member"
      decimals="INF"
      id="ixv-210281"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079277_TH_4_Member"
      decimals="INF"
      id="ixv-210282"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-5000">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252918_ClassMember" id="ixv-5012">Fidelity Freedom&#xae; Index 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252918_ClassMember" id="ixv-5015">Fidelity Freedom&#xae; Index 2025 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252918_ClassMember" id="ixv-5019">FATZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252918_ClassMember" id="ixv-5038">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2025 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252918_ClassMember" id="ixv-5040">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252918_ClassMember" id="ixv-5045">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252918_ClassMember" id="ixv-5047">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252918_ClassMember" id="ixv-5050">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252918_ClassMember" id="ixv-5053">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252918_ClassMember" id="ixv-5060">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252918_ClassMember"
      decimals="0"
      id="ixv-210283"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252918_ClassMember"
      decimals="INF"
      id="ixv-210284"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252918_ClassMember" id="ixv-5103">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252918_ClassMember" id="ixv-5109">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252918_ClassMember" id="ixv-5133">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,059,679,111



Fidelity Freedom Index 2025 Composite Index&#x2120;


$5,000,000,000

$5,051,143,810



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252918_LG_ClassMember_2YR" id="ixv-5152">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252918_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210285"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252918_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210286"
      unitRef="usd">5059679111</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252918_LG_1_AdditionalIndexMember_2YR"
      id="ixv-5165">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252918_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210287"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252918_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210288"
      unitRef="usd">5051143810</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252918_LG_2_AdditionalIndexMember_2YR"
      id="ixv-5178">&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="C000252918_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210289"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252918_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210290"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252918_ClassMember" id="ixv-5213">&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;$&lt;/span&gt;13,994,954,502&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,898,228&lt;/div&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="C000252918_InstantMember"
      decimals="0"
      id="ixv-210291"
      unitRef="usd">13994954502</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252918_InstantMember"
      decimals="INF"
      id="ixv-210292"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252918_ClassMember"
      decimals="0"
      id="ixv-210293"
      unitRef="usd">10898228</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252918_ClassMember"
      decimals="INF"
      id="ixv-210294"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252918_ClassMember" id="ixv-5288">
&#160;
&#160;
&#160;
&#160;
Bond Funds

48.0


Domestic Equity Funds

31.3


International Equity Funds

20.7


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 48.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 31.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 20.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252918_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210295"
      unitRef="pure">0.480</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210296"
      unitRef="pure">0.313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210297"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210298"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252918_ClassMember" id="ixv-5379">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

31.3


&#160;


Fidelity Series Bond Index Fund

29.4


&#160;


Fidelity Series Global ex U.S. Index Fund

20.7


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

9.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252918_TH_0_Member"
      decimals="INF"
      id="ixv-210299"
      unitRef="pure">0.313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_TH_1_Member"
      decimals="INF"
      id="ixv-210300"
      unitRef="pure">0.294</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_TH_2_Member"
      decimals="INF"
      id="ixv-210301"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_TH_3_Member"
      decimals="INF"
      id="ixv-210302"
      unitRef="pure">0.098</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_TH_4_Member"
      decimals="INF"
      id="ixv-210303"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252918_TH_5_Member"
      decimals="INF"
      id="ixv-210304"
      unitRef="pure">0.039</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-5510">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250737_ClassMember" id="ixv-5522">Fidelity Freedom&#xae; Index 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250737_ClassMember" id="ixv-5525">Fidelity Freedom&#xae; &#160;Index 2070 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250737_ClassMember" id="ixv-5530">FRBVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250737_ClassMember" id="ixv-5549">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250737_ClassMember" id="ixv-5551">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250737_ClassMember" id="ixv-5556">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="C000250737_ClassMember" id="ixv-5558">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250737_ClassMember" id="ixv-5561">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250737_ClassMember" id="ixv-5564">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250737_ClassMember" id="ixv-5571">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;9&lt;span style="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;0.12&lt;span 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="C000250737_ClassMember"
      decimals="0"
      id="ixv-210305"
      unitRef="usd">9</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250737_ClassMember"
      decimals="INF"
      id="ixv-210306"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250737_ClassMember" id="ixv-5614">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250737_ClassMember" id="ixv-5620">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000250737_ClassMember" id="ixv-5644">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.
Investor Class


$10,000

$10,461



Fidelity Freedom Index 2070 Composite Index&#x2120;


$10,000

$10,441



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250737_LG_ClassMember_2YR" id="ixv-5663">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250737_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210307"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250737_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210308"
      unitRef="usd">10461</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250737_LG_1_AdditionalIndexMember_2YR"
      id="ixv-5676">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2070 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250737_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210309"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250737_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210310"
      unitRef="usd">10441</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250737_LG_2_AdditionalIndexMember_2YR"
      id="ixv-5689">&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="C000250737_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210311"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250737_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210312"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250737_ClassMember" id="ixv-5724">&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;$&lt;/span&gt;49,873,888&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,824&lt;/div&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;9&lt;span 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="C000250737_InstantMember"
      decimals="0"
      id="ixv-210313"
      unitRef="usd">49873888</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250737_InstantMember"
      decimals="INF"
      id="ixv-210314"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250737_ClassMember"
      decimals="0"
      id="ixv-210315"
      unitRef="usd">8824</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250737_ClassMember"
      decimals="INF"
      id="ixv-210316"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250737_ClassMember" id="ixv-5799">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000250737_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210317"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250737_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210318"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250737_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210319"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250737_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210320"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250737_ClassMember" id="ixv-5890">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250737_TH_0_Member"
      decimals="INF"
      id="ixv-210321"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250737_TH_1_Member"
      decimals="INF"
      id="ixv-210322"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250737_TH_2_Member"
      decimals="INF"
      id="ixv-210323"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250737_TH_3_Member"
      decimals="INF"
      id="ixv-210324"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250737_TH_4_Member"
      decimals="INF"
      id="ixv-210325"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-6011">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252913_ClassMember" id="ixv-6023">Fidelity Freedom&#xae; Index 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252913_ClassMember" id="ixv-6026">Fidelity Freedom&#xae; Index 2050 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252913_ClassMember" id="ixv-6030">FAVQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252913_ClassMember" id="ixv-6049">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2050 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252913_ClassMember" id="ixv-6051">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252913_ClassMember" id="ixv-6056">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252913_ClassMember" id="ixv-6058">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252913_ClassMember" id="ixv-6061">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252913_ClassMember" id="ixv-6064">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252913_ClassMember" id="ixv-6071">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252913_ClassMember"
      decimals="0"
      id="ixv-210326"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252913_ClassMember"
      decimals="INF"
      id="ixv-210327"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252913_ClassMember" id="ixv-6114">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252913_ClassMember" id="ixv-6120">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252913_ClassMember" id="ixv-6144">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,072,642,127



Fidelity Freedom Index 2050 Composite Index&#x2120;


$5,000,000,000

$5,055,971,476



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252913_LG_ClassMember_2YR" id="ixv-6163">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252913_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210328"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252913_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210329"
      unitRef="usd">5072642127</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252913_LG_1_AdditionalIndexMember_2YR"
      id="ixv-6176">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252913_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210330"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252913_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210331"
      unitRef="usd">5055971476</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252913_LG_2_AdditionalIndexMember_2YR"
      id="ixv-6189">&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="C000252913_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210332"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252913_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210333"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252913_ClassMember" id="ixv-6224">&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;$&lt;/span&gt;20,141,523,508&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,737,175&lt;/div&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;12&lt;span 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="C000252913_InstantMember"
      decimals="0"
      id="ixv-210334"
      unitRef="usd">20141523508</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252913_InstantMember"
      decimals="INF"
      id="ixv-210335"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252913_ClassMember"
      decimals="0"
      id="ixv-210336"
      unitRef="usd">13737175</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252913_ClassMember"
      decimals="INF"
      id="ixv-210337"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252913_ClassMember" id="ixv-6299">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000252913_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210338"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252913_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210339"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252913_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210340"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252913_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210341"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252913_ClassMember" id="ixv-6390">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252913_TH_0_Member"
      decimals="INF"
      id="ixv-210342"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252913_TH_1_Member"
      decimals="INF"
      id="ixv-210343"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252913_TH_2_Member"
      decimals="INF"
      id="ixv-210344"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252913_TH_3_Member"
      decimals="INF"
      id="ixv-210345"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252913_TH_4_Member"
      decimals="INF"
      id="ixv-210346"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-6511">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079283_ClassMember" id="ixv-6523">Fidelity Freedom&#xae; Index 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079283_ClassMember" id="ixv-6526">Fidelity Freedom&#xae; Index 2020 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079283_ClassMember" id="ixv-6530">FPIFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079283_ClassMember" id="ixv-6549">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079283_ClassMember" id="ixv-6551">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079283_ClassMember" id="ixv-6556">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="C000079283_ClassMember" id="ixv-6558">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079283_ClassMember" id="ixv-6561">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079283_ClassMember" id="ixv-6564">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079283_ClassMember" id="ixv-6571">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079283_ClassMember"
      decimals="0"
      id="ixv-210347"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079283_ClassMember"
      decimals="INF"
      id="ixv-210348"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079283_ClassMember" id="ixv-6613">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079283_ClassMember" id="ixv-6637">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,866


$10,820


$11,764


$12,304


$12,104


$15,326


$15,550


$14,555


$16,071


$17,000



Fidelity Freedom Index 2020 Composite Index&#x2120;


$10,000

$9,877


$10,843


$11,802


$12,370


$12,176


$15,453


$15,721


$14,702


$16,276


$17,214



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,196


$10,241


$10,364


$10,829


$11,796


$11,880


$11,386


$10,842


$11,026


$11,564



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079283_LG_ClassMember_11YR" id="ixv-6656">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
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      contextRef="C000079283_ClassMember_AsOf_2015"
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    <oef:AccmVal
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      id="ixv-210350"
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    <oef:AccmVal
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      id="ixv-210351"
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      decimals="0"
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    <oef:AccmVal
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      id="ixv-6705">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
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      unitRef="usd">14702</oef:AccmVal>
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      id="ixv-6754">&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>
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      id="ixv-210372"
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    <oef:AccmVal
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      decimals="0"
      id="ixv-210374"
      unitRef="usd">10364</oef:AccmVal>
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      unitRef="usd">10829</oef:AccmVal>
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      id="ixv-210377"
      unitRef="usd">11880</oef:AccmVal>
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      id="ixv-210378"
      unitRef="usd">11386</oef:AccmVal>
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      id="ixv-210379"
      unitRef="usd">10842</oef:AccmVal>
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    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079283_ClassMember" id="ixv-6852">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

5.78%

7.03%

5.45%


Fidelity Freedom Index 2020 Composite Index&#x2120;

5.76%


7.17%


5.58%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.46%




&#160;
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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    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079283_ClassMember" id="ixv-6930">&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="C000079283_ClassMember" id="ixv-6934">&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="C000079283_ClassMember" id="ixv-6940">&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;$&lt;/span&gt;6,702,986,914&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,494,444&lt;/div&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;13&lt;span 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>
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      id="ixv-210391"
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    <oef:HoldingsCount
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      id="ixv-210392"
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    <oef:AdvisoryFeesPaidAmt
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    <us-gaap:InvestmentCompanyPortfolioTurnover
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    <oef:HoldingsTableTextBlock contextRef="C000079283_ClassMember" id="ixv-7015">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.7


Domestic Equity Funds

26.3


International Equity Funds

17.4


Short-Term Funds

2.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.7&#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 - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 17.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 2.6&#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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      id="ixv-210395"
      unitRef="pure">0.537</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079283_AA_DomesticEquityFunds_Member"
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      id="ixv-210396"
      unitRef="pure">0.263</oef:PctOfNav>
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      id="ixv-210397"
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    <oef:PctOfNav
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      id="ixv-210398"
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    <oef:LargestHoldingsTableTextBlock contextRef="C000079283_ClassMember" id="ixv-7119">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

33.4


&#160;


Fidelity Series Total Market Index Fund

26.3


&#160;


Fidelity Series Global ex U.S. Index Fund

17.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

7.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


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

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.6


&#160;


Fidelity Series Treasury Bill Index Fund

2.6


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
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    <oef:PctOfNav
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    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-7270">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157967_ClassMember" id="ixv-7282">Fidelity Freedom&#xae; Index 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157967_ClassMember" id="ixv-7285">Fidelity Freedom&#xae; Index 2040 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157967_ClassMember" id="ixv-7289">FFIZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157967_ClassMember" id="ixv-7308">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157967_ClassMember" id="ixv-7310">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157967_ClassMember" id="ixv-7315">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="C000157967_ClassMember" id="ixv-7317">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157967_ClassMember" id="ixv-7320">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157967_ClassMember" id="ixv-7323">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157967_ClassMember" id="ixv-7330">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157967_ClassMember"
      decimals="0"
      id="ixv-210408"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157967_ClassMember"
      decimals="INF"
      id="ixv-210409"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157967_ClassMember" id="ixv-7372">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157967_ClassMember" id="ixv-7396">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,746,953


$5,454,420


$6,174,468


$6,459,038


$5,884,772


$8,820,840


$9,255,024


$8,593,648


$10,224,029


$10,895,251



Fidelity Freedom Index 2040 Composite Index&#x2120;


$5,000,000

$4,751,667


$5,459,524


$6,179,499


$6,477,152


$5,908,057


$8,862,422


$9,336,522


$8,647,032


$10,309,842


$10,975,967



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157967_LG_ClassMember_11YR" id="ixv-7415">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-210410"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-210411"
      unitRef="usd">4746953</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210412"
      unitRef="usd">5454420</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210413"
      unitRef="usd">6174468</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210414"
      unitRef="usd">6459038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210415"
      unitRef="usd">5884772</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210416"
      unitRef="usd">8820840</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210417"
      unitRef="usd">9255024</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210418"
      unitRef="usd">8593648</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210419"
      unitRef="usd">10224029</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210420"
      unitRef="usd">10895251</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157967_LG_1_AdditionalIndexMember_11YR"
      id="ixv-7464">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210421"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210422"
      unitRef="usd">4751667</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210423"
      unitRef="usd">5459524</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210424"
      unitRef="usd">6179499</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210425"
      unitRef="usd">6477152</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210426"
      unitRef="usd">5908057</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210427"
      unitRef="usd">8862422</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210428"
      unitRef="usd">9336522</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210429"
      unitRef="usd">8647032</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210430"
      unitRef="usd">10309842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210431"
      unitRef="usd">10975967</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157967_LG_2_AdditionalIndexMember_11YR"
      id="ixv-7513">&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="C000157967_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210432"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210433"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210434"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210435"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210436"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210437"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210438"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210439"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210440"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210441"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157967_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210442"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157967_ClassMember" id="ixv-7611">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

6.57%

13.11%

8.29%


Fidelity Freedom Index 2040 Composite Index&#x2120;

6.46%


13.19%


8.38%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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="C000157967_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210443"
      unitRef="pure">0.0657</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210444"
      unitRef="pure">0.1311</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210445"
      unitRef="pure">0.0829</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210446"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210447"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210448"
      unitRef="pure">0.0838</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210449"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210450"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157967_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210451"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157967_ClassMember" id="ixv-7680">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157967_ClassMember" id="ixv-7697">&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="C000157967_ClassMember" id="ixv-7701">&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="C000157967_ClassMember" id="ixv-7707">&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;$&lt;/span&gt;23,680,015,185&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,584,331&lt;/div&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;13&lt;span 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="C000157967_InstantMember"
      decimals="0"
      id="ixv-210452"
      unitRef="usd">23680015185</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157967_InstantMember"
      decimals="INF"
      id="ixv-210453"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157967_ClassMember"
      decimals="0"
      id="ixv-210454"
      unitRef="usd">16584331</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157967_ClassMember"
      decimals="INF"
      id="ixv-210455"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157967_ClassMember" id="ixv-7782">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

49.6


International Equity Funds

32.8


Bond Funds

17.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 49.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 17.6&#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="C000157967_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210456"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157967_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210457"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157967_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210458"
      unitRef="pure">0.176</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157967_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210459"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157967_ClassMember" id="ixv-7873">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

49.6


&#160;


Fidelity Series Global ex U.S. Index Fund

32.8


&#160;


Fidelity Series Bond Index Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157967_TH_0_Member"
      decimals="INF"
      id="ixv-210460"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157967_TH_1_Member"
      decimals="INF"
      id="ixv-210461"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157967_TH_2_Member"
      decimals="INF"
      id="ixv-210462"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157967_TH_3_Member"
      decimals="INF"
      id="ixv-210463"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157967_TH_4_Member"
      decimals="INF"
      id="ixv-210464"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-7994">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177883_ClassMember" id="ixv-8006">Fidelity Flex&#xae; Freedom Blend 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177883_ClassMember" id="ixv-8009">Fidelity Flex&#xae; Freedom Blend 2015 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177883_ClassMember" id="ixv-8013">FILSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177883_ClassMember" id="ixv-8032">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177883_ClassMember" id="ixv-8034">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177883_ClassMember" id="ixv-8039">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177883_ClassMember" id="ixv-8041">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177883_ClassMember" id="ixv-8044">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177883_ClassMember" id="ixv-8047">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177883_ClassMember" id="ixv-8054">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2015 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177883_ClassMember"
      decimals="0"
      id="ixv-210465"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177883_ClassMember"
      decimals="INF"
      id="ixv-210466"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177883_ClassMember" id="ixv-8106">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177883_ClassMember" id="ixv-8137">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2015 Fund


$10,000

$10,609


$10,967


$10,757


$13,580


$13,647


$12,892


$14,105


$14,914



Fidelity Freedom 2015 Composite Index&#x2120;


$10,000

$10,524


$11,030


$11,014


$13,463


$13,619


$12,849


$14,024


$14,824



Bloomberg U.S. Aggregate Bond Index


$10,000

$9,960


$10,406


$11,336


$11,416


$10,942


$10,419


$10,596


$11,113



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177883_LG_ClassMember_9YR" id="ixv-8156">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2015 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210467"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210468"
      unitRef="usd">10609</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210469"
      unitRef="usd">10967</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210470"
      unitRef="usd">10757</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210471"
      unitRef="usd">13580</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210472"
      unitRef="usd">13647</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210473"
      unitRef="usd">12892</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210474"
      unitRef="usd">14105</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210475"
      unitRef="usd">14914</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177883_LG_1_AdditionalIndexMember_9YR"
      id="ixv-8197">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210476"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210477"
      unitRef="usd">10524</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210478"
      unitRef="usd">11030</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210479"
      unitRef="usd">11014</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210480"
      unitRef="usd">13463</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210481"
      unitRef="usd">13619</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210482"
      unitRef="usd">12849</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210483"
      unitRef="usd">14024</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210484"
      unitRef="usd">14824</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177883_LG_2_AdditionalIndexMember_9YR"
      id="ixv-8238">&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="C000177883_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210485"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210486"
      unitRef="usd">9960</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210487"
      unitRef="usd">10406</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210488"
      unitRef="usd">11336</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210489"
      unitRef="usd">11416</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210490"
      unitRef="usd">10942</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210491"
      unitRef="usd">10419</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210492"
      unitRef="usd">10596</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177883_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210493"
      unitRef="usd">11113</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177883_ClassMember" id="ixv-8322">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2015 Fund

5.73%

6.75%

5.25%


Fidelity Freedom 2015 Composite Index&#x2120;

5.70%


6.12%


5.17%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.36%




A&#160; &#160;From June 8, 2017

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="C000177883_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210494"
      unitRef="pure">0.0573</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210495"
      unitRef="pure">0.0675</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210496"
      unitRef="pure">0.0525</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210497"
      unitRef="pure">0.0570</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210498"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210499"
      unitRef="pure">0.0517</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210500"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210501"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177883_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210502"
      unitRef="pure">0.0136</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177883_ClassMember" id="ixv-8392">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177883_ClassMember" id="ixv-8409">&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="C000177883_ClassMember" id="ixv-8413">&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="C000177883_ClassMember" id="ixv-8419">&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;$&lt;/span&gt;8,108,092&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;34&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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="C000177883_InstantMember"
      decimals="0"
      id="ixv-210503"
      unitRef="usd">8108092</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177883_InstantMember"
      decimals="INF"
      id="ixv-210504"
      unitRef="holding">34</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177883_ClassMember"
      decimals="0"
      id="ixv-210505"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177883_ClassMember"
      decimals="INF"
      id="ixv-210506"
      unitRef="pure">0.25</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177883_ClassMember" id="ixv-8494">
&#160;
&#160;
&#160;
&#160;
Bond Funds

62.4


International Equity Funds

19.0


Domestic Equity Funds

18.4


Short-Term Funds

0.2


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 62.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 19.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 18.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 0.2&#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="C000177883_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210507"
      unitRef="pure">0.624</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210508"
      unitRef="pure">0.190</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210509"
      unitRef="pure">0.184</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-210510"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210511"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177883_ClassMember" id="ixv-8598">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Government Bond Index Fund

11.8


&#160;


Fidelity Series Investment Grade Bond Fund

11.2


&#160;


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

11.1


&#160;


Fidelity Series Corporate Bond Fund

7.3


&#160;


Fidelity Series Investment Grade Securitized Fund

7.0


&#160;


Fidelity Series Emerging Markets Opportunities Fund

5.3


&#160;


Fidelity Series Large Cap Value Index Fund

5.2


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.1


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

4.4


&#160;


Fidelity Series Blue Chip Growth Fund

4.3


&#160;


&#160;

72.7

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177883_TH_0_Member"
      decimals="INF"
      id="ixv-210512"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_1_Member"
      decimals="INF"
      id="ixv-210513"
      unitRef="pure">0.112</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_2_Member"
      decimals="INF"
      id="ixv-210514"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_3_Member"
      decimals="INF"
      id="ixv-210515"
      unitRef="pure">0.073</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_4_Member"
      decimals="INF"
      id="ixv-210516"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_5_Member"
      decimals="INF"
      id="ixv-210517"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_6_Member"
      decimals="INF"
      id="ixv-210518"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_7_Member"
      decimals="INF"
      id="ixv-210519"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_8_Member"
      decimals="INF"
      id="ixv-210520"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177883_TH_9_Member"
      decimals="INF"
      id="ixv-210521"
      unitRef="pure">0.043</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-8769">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220384_ClassMember" id="ixv-8773">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220384_ClassMember" id="ixv-8784">Fidelity Freedom&#xae; Index 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220384_ClassMember" id="ixv-8787">Fidelity Freedom&#xae; Index 2015 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220384_ClassMember" id="ixv-8791">FFYPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220384_ClassMember" id="ixv-8810">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220384_ClassMember" id="ixv-8812">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220384_ClassMember" id="ixv-8817">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220384_ClassMember" id="ixv-8819">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220384_ClassMember" id="ixv-8822">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220384_ClassMember" id="ixv-8825">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220384_ClassMember" id="ixv-8832">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220384_ClassMember"
      decimals="0"
      id="ixv-210522"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220384_ClassMember"
      decimals="INF"
      id="ixv-210523"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220384_ClassMember" id="ixv-8874">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220384_ClassMember" id="ixv-8898">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,239,599,040


$2,260,173,101


$2,134,323,470


$2,326,250,334


$2,461,644,353



Fidelity Freedom Index 2015 Composite Index&#x2120;


$2,000,000,000

$2,240,328,599


$2,266,284,020


$2,138,123,847


$2,333,690,107


$2,466,775,311



Bloomberg U.S. Aggregate Bond Index


$2,000,000,000

$1,961,896,920


$1,880,437,250


$1,790,490,276


$1,820,891,361


$1,909,743,644



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220384_LG_ClassMember_6YR" id="ixv-8917">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220384_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210524"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210525"
      unitRef="usd">2239599040</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210526"
      unitRef="usd">2260173101</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210527"
      unitRef="usd">2134323470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210528"
      unitRef="usd">2326250334</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210529"
      unitRef="usd">2461644353</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220384_LG_1_AdditionalIndexMember_6YR"
      id="ixv-8946">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220384_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210530"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210531"
      unitRef="usd">2240328599</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210532"
      unitRef="usd">2266284020</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210533"
      unitRef="usd">2138123847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210534"
      unitRef="usd">2333690107</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210535"
      unitRef="usd">2466775311</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220384_LG_2_AdditionalIndexMember_6YR"
      id="ixv-8975">&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="C000220384_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210536"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210537"
      unitRef="usd">1961896920</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210538"
      unitRef="usd">1880437250</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210539"
      unitRef="usd">1790490276</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210540"
      unitRef="usd">1820891361</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220384_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210541"
      unitRef="usd">1909743644</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220384_ClassMember" id="ixv-9038">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

5.82%

4.45%


Fidelity Freedom Index 2015 Composite Index&#x2120;

5.70%


4.50%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.96%




A&#160; &#160;From June 24, 2020

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="C000220384_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210542"
      unitRef="pure">0.0582</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220384_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210543"
      unitRef="pure">0.0445</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220384_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210544"
      unitRef="pure">0.0570</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220384_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210545"
      unitRef="pure">0.0450</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220384_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210546"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220384_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210547"
      unitRef="pure">-0.0096</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220384_ClassMember" id="ixv-9094">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220384_ClassMember" id="ixv-9111">&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="C000220384_ClassMember" id="ixv-9115">&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="C000220384_ClassMember" id="ixv-9121">&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;$&lt;/span&gt;1,926,973,408&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,595,575&lt;/div&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="C000220384_InstantMember"
      decimals="0"
      id="ixv-210548"
      unitRef="usd">1926973408</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220384_InstantMember"
      decimals="INF"
      id="ixv-210549"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220384_ClassMember"
      decimals="0"
      id="ixv-210550"
      unitRef="usd">1595575</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220384_ClassMember"
      decimals="INF"
      id="ixv-210551"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220384_ClassMember" id="ixv-9196">
&#160;
&#160;
&#160;
&#160;
Bond Funds

60.1


Domestic Equity Funds

20.7


International Equity Funds

13.7


Short-Term Funds

5.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 60.1&#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 - 20.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 5.5&#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="C000220384_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210552"
      unitRef="pure">0.601</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210553"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210554"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-210555"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210556"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220384_ClassMember" id="ixv-9300">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

36.9


&#160;


Fidelity Series Total Market Index Fund

20.7


&#160;


Fidelity Series Global ex U.S. Index Fund

13.7


&#160;


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

10.4


&#160;


Fidelity Series Treasury Bill Index Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

4.4


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220384_TH_0_Member"
      decimals="INF"
      id="ixv-210557"
      unitRef="pure">0.369</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_TH_1_Member"
      decimals="INF"
      id="ixv-210558"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_TH_2_Member"
      decimals="INF"
      id="ixv-210559"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_TH_3_Member"
      decimals="INF"
      id="ixv-210560"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_TH_4_Member"
      decimals="INF"
      id="ixv-210561"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_TH_5_Member"
      decimals="INF"
      id="ixv-210562"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_TH_6_Member"
      decimals="INF"
      id="ixv-210563"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220384_TH_7_Member"
      decimals="INF"
      id="ixv-210564"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220384_ClassMember" id="ixv-9405">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220384_ClassMember" id="ixv-9411">&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;1-800-544-3455&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="C000220384_ClassMember" id="ixv-9415">&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="C000220384_ClassMember" id="ixv-9418">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220384_ClassMember" id="ixv-9422">&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="C000220384_ClassMember" id="ixv-9433">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-9498">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177888_ClassMember" id="ixv-9510">Fidelity Flex&#xae; Freedom Blend 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177888_ClassMember" id="ixv-9513">Fidelity Flex&#xae; Freedom Blend 2040 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177888_ClassMember" id="ixv-9517">FCLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177888_ClassMember" id="ixv-9536">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177888_ClassMember" id="ixv-9538">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177888_ClassMember" id="ixv-9543">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177888_ClassMember" id="ixv-9545">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177888_ClassMember" id="ixv-9548">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177888_ClassMember" id="ixv-9551">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177888_ClassMember" id="ixv-9558">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2040 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177888_ClassMember"
      decimals="0"
      id="ixv-210565"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177888_ClassMember"
      decimals="INF"
      id="ixv-210566"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177888_ClassMember" id="ixv-9610">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177888_ClassMember" id="ixv-9641">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2040 Fund


$10,000

$10,989


$11,271


$10,114


$15,831


$16,450


$15,370


$18,522


$19,628



Fidelity Freedom 2040 Composite Index&#x2120;


$10,000

$10,910


$11,449


$10,443


$15,666


$16,504


$15,285


$18,224


$19,402



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177888_LG_ClassMember_9YR" id="ixv-9660">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2040 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210567"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210568"
      unitRef="usd">10989</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210569"
      unitRef="usd">11271</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210570"
      unitRef="usd">10114</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210571"
      unitRef="usd">15831</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210572"
      unitRef="usd">16450</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210573"
      unitRef="usd">15370</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210574"
      unitRef="usd">18522</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210575"
      unitRef="usd">19628</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177888_LG_1_AdditionalIndexMember_9YR"
      id="ixv-9701">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210576"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210577"
      unitRef="usd">10910</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210578"
      unitRef="usd">11449</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210579"
      unitRef="usd">10443</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210580"
      unitRef="usd">15666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210581"
      unitRef="usd">16504</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210582"
      unitRef="usd">15285</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210583"
      unitRef="usd">18224</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210584"
      unitRef="usd">19402</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177888_LG_2_AdditionalIndexMember_9YR"
      id="ixv-9742">&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="C000177888_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210585"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210586"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210587"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210588"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210589"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210590"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210591"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210592"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177888_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210593"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177888_ClassMember" id="ixv-9826">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2040 Fund

5.97%

14.18%

9.01%


Fidelity Freedom 2040 Composite Index&#x2120;

6.46%


13.19%


8.85%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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="C000177888_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210594"
      unitRef="pure">0.0597</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210595"
      unitRef="pure">0.1418</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210596"
      unitRef="pure">0.0901</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210597"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210598"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210599"
      unitRef="pure">0.0885</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210600"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210601"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177888_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210602"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177888_ClassMember" id="ixv-9895">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177888_ClassMember" id="ixv-9912">&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="C000177888_ClassMember" id="ixv-9916">&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="C000177888_ClassMember" id="ixv-9922">&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;$&lt;/span&gt;66,246,323&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;30&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;44&lt;span 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="C000177888_InstantMember"
      decimals="0"
      id="ixv-210603"
      unitRef="usd">66246323</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177888_InstantMember"
      decimals="INF"
      id="ixv-210604"
      unitRef="holding">30</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177888_ClassMember"
      decimals="0"
      id="ixv-210605"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177888_ClassMember"
      decimals="INF"
      id="ixv-210606"
      unitRef="pure">0.44</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177888_ClassMember" id="ixv-9997">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

47.2


International Equity Funds

38.3


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 - 47.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 38.3&#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="C000177888_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210607"
      unitRef="pure">0.472</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210608"
      unitRef="pure">0.383</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210609"
      unitRef="pure">0.145</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210610"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177888_ClassMember" id="ixv-10088">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

13.4


&#160;


Fidelity Series Blue Chip Growth Fund

10.9


&#160;


Fidelity Series Emerging Markets Opportunities Fund

9.7


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.9


&#160;


Fidelity Series Large Cap Growth Index Fund

7.0


&#160;


Fidelity Series International Growth Fund

6.6


&#160;


Fidelity Series Overseas Fund

6.5


&#160;


Fidelity Series International Value Fund

6.5


&#160;


Fidelity Series Large Cap Stock Fund

6.5


&#160;


Fidelity Series Value Discovery Fund

4.8


&#160;


&#160;

79.8

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177888_TH_0_Member"
      decimals="INF"
      id="ixv-210611"
      unitRef="pure">0.134</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_1_Member"
      decimals="INF"
      id="ixv-210612"
      unitRef="pure">0.109</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_2_Member"
      decimals="INF"
      id="ixv-210613"
      unitRef="pure">0.097</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_3_Member"
      decimals="INF"
      id="ixv-210614"
      unitRef="pure">0.079</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_4_Member"
      decimals="INF"
      id="ixv-210615"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_5_Member"
      decimals="INF"
      id="ixv-210616"
      unitRef="pure">0.066</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_6_Member"
      decimals="INF"
      id="ixv-210617"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_7_Member"
      decimals="INF"
      id="ixv-210618"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_8_Member"
      decimals="INF"
      id="ixv-210619"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177888_TH_9_Member"
      decimals="INF"
      id="ixv-210620"
      unitRef="pure">0.048</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-10259">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157957_ClassMember" id="ixv-10271">Fidelity Freedom&#xae; Index 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157957_ClassMember" id="ixv-10274">Fidelity Freedom&#xae; Index 2045 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157957_ClassMember" id="ixv-10278">FFOLX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157957_ClassMember" id="ixv-10297">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157957_ClassMember" id="ixv-10299">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157957_ClassMember" id="ixv-10304">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="C000157957_ClassMember" id="ixv-10306">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157957_ClassMember" id="ixv-10309">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157957_ClassMember" id="ixv-10312">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157957_ClassMember" id="ixv-10319">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157957_ClassMember"
      decimals="0"
      id="ixv-210621"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157957_ClassMember"
      decimals="INF"
      id="ixv-210622"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157957_ClassMember" id="ixv-10361">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157957_ClassMember" id="ixv-10385">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,746,061


$5,454,932


$6,174,724


$6,457,394


$5,884,207


$8,819,916


$9,256,753


$8,599,109


$10,310,036


$10,996,524



Fidelity Freedom Index 2045 Composite Index&#x2120;


$5,000,000

$4,751,667


$5,459,524


$6,179,499


$6,477,152


$5,908,057


$8,862,422


$9,338,439


$8,652,539


$10,395,314


$11,076,086



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157957_LG_ClassMember_11YR" id="ixv-10404">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-210623"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-210624"
      unitRef="usd">4746061</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210625"
      unitRef="usd">5454932</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210626"
      unitRef="usd">6174724</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210627"
      unitRef="usd">6457394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210628"
      unitRef="usd">5884207</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210629"
      unitRef="usd">8819916</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210630"
      unitRef="usd">9256753</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210631"
      unitRef="usd">8599109</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210632"
      unitRef="usd">10310036</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210633"
      unitRef="usd">10996524</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157957_LG_1_AdditionalIndexMember_11YR"
      id="ixv-10453">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210634"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210635"
      unitRef="usd">4751667</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210636"
      unitRef="usd">5459524</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210637"
      unitRef="usd">6179499</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210638"
      unitRef="usd">6477152</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210639"
      unitRef="usd">5908057</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210640"
      unitRef="usd">8862422</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210641"
      unitRef="usd">9338439</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210642"
      unitRef="usd">8652539</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210643"
      unitRef="usd">10395314</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210644"
      unitRef="usd">11076086</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157957_LG_2_AdditionalIndexMember_11YR"
      id="ixv-10502">&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="C000157957_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210645"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210646"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210647"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210648"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210649"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210650"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210651"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210652"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210653"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210654"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157957_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210655"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157957_ClassMember" id="ixv-10600">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

6.66%

13.32%

8.40%


Fidelity Freedom Index 2045 Composite Index&#x2120;

6.55%


13.39%


8.48%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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="C000157957_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210656"
      unitRef="pure">0.0666</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210657"
      unitRef="pure">0.1332</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210658"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210659"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210660"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210661"
      unitRef="pure">0.0848</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210662"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210663"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157957_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210664"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157957_ClassMember" id="ixv-10669">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157957_ClassMember" id="ixv-10686">&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="C000157957_ClassMember" id="ixv-10690">&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="C000157957_ClassMember" id="ixv-10696">&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;$&lt;/span&gt;20,980,633,428&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;14,374,153&lt;/div&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;13&lt;span 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="C000157957_InstantMember"
      decimals="0"
      id="ixv-210665"
      unitRef="usd">20980633428</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157957_InstantMember"
      decimals="INF"
      id="ixv-210666"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157957_ClassMember"
      decimals="0"
      id="ixv-210667"
      unitRef="usd">14374153</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157957_ClassMember"
      decimals="INF"
      id="ixv-210668"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157957_ClassMember" id="ixv-10771">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000157957_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210669"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157957_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210670"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157957_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210671"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157957_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210672"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157957_ClassMember" id="ixv-10862">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157957_TH_0_Member"
      decimals="INF"
      id="ixv-210673"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157957_TH_1_Member"
      decimals="INF"
      id="ixv-210674"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157957_TH_2_Member"
      decimals="INF"
      id="ixv-210675"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157957_TH_3_Member"
      decimals="INF"
      id="ixv-210676"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157957_TH_4_Member"
      decimals="INF"
      id="ixv-210677"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-10983">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220380_ClassMember" id="ixv-10987">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220380_ClassMember" id="ixv-10998">Fidelity Freedom&#xae; Index 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220380_ClassMember" id="ixv-11001">Fidelity Freedom&#xae; Index 2050 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220380_ClassMember" id="ixv-11005">FRLPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220380_ClassMember" id="ixv-11024">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220380_ClassMember" id="ixv-11026">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220380_ClassMember" id="ixv-11031">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220380_ClassMember" id="ixv-11033">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220380_ClassMember" id="ixv-11036">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220380_ClassMember" id="ixv-11039">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220380_ClassMember" id="ixv-11046">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220380_ClassMember"
      decimals="0"
      id="ixv-210678"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220380_ClassMember"
      decimals="INF"
      id="ixv-210679"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220380_ClassMember" id="ixv-11088">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220380_ClassMember" id="ixv-11112">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,570,598,052


$2,697,791,321


$2,506,619,120


$3,006,497,215


$3,207,102,829



Fidelity Freedom Index 2050 Composite Index&#x2120;


$2,000,000,000

$2,564,930,037


$2,702,697,201


$2,504,186,394


$3,008,574,171


$3,205,600,618



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220380_LG_ClassMember_6YR" id="ixv-11131">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220380_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210680"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210681"
      unitRef="usd">2570598052</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210682"
      unitRef="usd">2697791321</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210683"
      unitRef="usd">2506619120</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210684"
      unitRef="usd">3006497215</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210685"
      unitRef="usd">3207102829</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220380_LG_1_AdditionalIndexMember_6YR"
      id="ixv-11160">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220380_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210686"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210687"
      unitRef="usd">2564930037</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210688"
      unitRef="usd">2702697201</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210689"
      unitRef="usd">2504186394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210690"
      unitRef="usd">3008574171</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210691"
      unitRef="usd">3205600618</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220380_LG_2_AdditionalIndexMember_6YR"
      id="ixv-11189">&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="C000220380_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210692"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210693"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210694"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210695"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210696"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220380_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210697"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220380_ClassMember" id="ixv-11252">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.67%

10.41%


Fidelity Freedom Index 2050 Composite Index&#x2120;

6.55%


10.40%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220380_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210698"
      unitRef="pure">0.0667</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220380_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210699"
      unitRef="pure">0.1041</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220380_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210700"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220380_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210701"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220380_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210702"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220380_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210703"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220380_ClassMember" id="ixv-11307">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220380_ClassMember" id="ixv-11324">&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="C000220380_ClassMember" id="ixv-11328">&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="C000220380_ClassMember" id="ixv-11334">&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;$&lt;/span&gt;20,141,523,508&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,737,175&lt;/div&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;12&lt;span 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="C000220380_InstantMember"
      decimals="0"
      id="ixv-210704"
      unitRef="usd">20141523508</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220380_InstantMember"
      decimals="INF"
      id="ixv-210705"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220380_ClassMember"
      decimals="0"
      id="ixv-210706"
      unitRef="usd">13737175</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220380_ClassMember"
      decimals="INF"
      id="ixv-210707"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220380_ClassMember" id="ixv-11409">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000220380_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210708"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220380_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210709"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220380_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210710"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220380_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210711"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220380_ClassMember" id="ixv-11500">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220380_TH_0_Member"
      decimals="INF"
      id="ixv-210712"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220380_TH_1_Member"
      decimals="INF"
      id="ixv-210713"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220380_TH_2_Member"
      decimals="INF"
      id="ixv-210714"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220380_TH_3_Member"
      decimals="INF"
      id="ixv-210715"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220380_TH_4_Member"
      decimals="INF"
      id="ixv-210716"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220380_ClassMember" id="ixv-11575">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220380_ClassMember" id="ixv-11581">&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;1-800-544-3455&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="C000220380_ClassMember" id="ixv-11585">&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="C000220380_ClassMember" id="ixv-11588">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220380_ClassMember" id="ixv-11592">&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="C000220380_ClassMember" id="ixv-11603">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-11668">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177884_ClassMember" id="ixv-11680">Fidelity Flex&#xae; Freedom Blend 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177884_ClassMember" id="ixv-11683">Fidelity Flex&#xae; Freedom Blend 2020 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177884_ClassMember" id="ixv-11687">FULSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177884_ClassMember" id="ixv-11706">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177884_ClassMember" id="ixv-11708">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177884_ClassMember" id="ixv-11713">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177884_ClassMember" id="ixv-11715">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177884_ClassMember" id="ixv-11718">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177884_ClassMember" id="ixv-11721">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177884_ClassMember" id="ixv-11728">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2020 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177884_ClassMember"
      decimals="0"
      id="ixv-210717"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177884_ClassMember"
      decimals="INF"
      id="ixv-210718"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177884_ClassMember" id="ixv-11780">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&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="C000177884_ClassMember" id="ixv-11811">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2020 Fund


$10,000

$10,672


$11,022


$10,666


$14,008


$14,145


$13,265


$14,743


$15,580



Fidelity Freedom 2020 Composite Index&#x2120;


$10,000

$10,586


$11,106


$10,931


$13,873


$14,114


$13,199


$14,612


$15,454



Bloomberg U.S. Aggregate Bond Index


$10,000

$9,960


$10,406


$11,336


$11,416


$10,942


$10,419


$10,596


$11,113



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177884_LG_ClassMember_9YR" id="ixv-11830">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2020 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210719"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210720"
      unitRef="usd">10672</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210721"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210722"
      unitRef="usd">10666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210723"
      unitRef="usd">14008</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210724"
      unitRef="usd">14145</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210725"
      unitRef="usd">13265</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210726"
      unitRef="usd">14743</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210727"
      unitRef="usd">15580</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177884_LG_1_AdditionalIndexMember_9YR"
      id="ixv-11871">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210728"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210729"
      unitRef="usd">10586</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210730"
      unitRef="usd">11106</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210731"
      unitRef="usd">10931</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210732"
      unitRef="usd">13873</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210733"
      unitRef="usd">14114</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210734"
      unitRef="usd">13199</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210735"
      unitRef="usd">14612</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210736"
      unitRef="usd">15454</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177884_LG_2_AdditionalIndexMember_9YR"
      id="ixv-11912">&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="C000177884_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210737"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210738"
      unitRef="usd">9960</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210739"
      unitRef="usd">10406</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210740"
      unitRef="usd">11336</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210741"
      unitRef="usd">11416</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210742"
      unitRef="usd">10942</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210743"
      unitRef="usd">10419</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210744"
      unitRef="usd">10596</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177884_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210745"
      unitRef="usd">11113</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177884_ClassMember" id="ixv-11996">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2020 Fund

5.68%

7.87%

5.84%


Fidelity Freedom 2020 Composite Index&#x2120;

5.76%


7.17%


5.73%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.36%




A&#160; &#160;From June 8, 2017

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="C000177884_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210746"
      unitRef="pure">0.0568</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210747"
      unitRef="pure">0.0787</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210748"
      unitRef="pure">0.0584</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210749"
      unitRef="pure">0.0576</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210750"
      unitRef="pure">0.0717</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210751"
      unitRef="pure">0.0573</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210752"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210753"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177884_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210754"
      unitRef="pure">0.0136</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177884_ClassMember" id="ixv-12066">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177884_ClassMember" id="ixv-12083">&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="C000177884_ClassMember" id="ixv-12087">&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="C000177884_ClassMember" id="ixv-12093">&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;$&lt;/span&gt;28,259,843&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;33&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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="C000177884_InstantMember"
      decimals="0"
      id="ixv-210755"
      unitRef="usd">28259843</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177884_InstantMember"
      decimals="INF"
      id="ixv-210756"
      unitRef="holding">33</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177884_ClassMember"
      decimals="0"
      id="ixv-210757"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177884_ClassMember"
      decimals="INF"
      id="ixv-210758"
      unitRef="pure">0.28</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177884_ClassMember" id="ixv-12168">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.4


Domestic Equity Funds

23.9


International Equity Funds

22.6


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 - 23.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 22.6&#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="C000177884_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210759"
      unitRef="pure">0.534</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210760"
      unitRef="pure">0.239</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210761"
      unitRef="pure">0.226</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-210762"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210763"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177884_ClassMember" id="ixv-12272">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Government Bond Index Fund

9.9


&#160;


Fidelity Series Investment Grade Bond Fund

9.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

8.1


&#160;


Fidelity Series Large Cap Value Index Fund

6.8


&#160;


Fidelity Series Emerging Markets Opportunities Fund

6.2


&#160;


Fidelity Series Corporate Bond Fund

6.1


&#160;


Fidelity Series Investment Grade Securitized Fund

5.9


&#160;


Fidelity Series Blue Chip Growth Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.5


&#160;


&#160;

67.4

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177884_TH_0_Member"
      decimals="INF"
      id="ixv-210764"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_1_Member"
      decimals="INF"
      id="ixv-210765"
      unitRef="pure">0.094</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_2_Member"
      decimals="INF"
      id="ixv-210766"
      unitRef="pure">0.081</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_3_Member"
      decimals="INF"
      id="ixv-210767"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_4_Member"
      decimals="INF"
      id="ixv-210768"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_5_Member"
      decimals="INF"
      id="ixv-210769"
      unitRef="pure">0.061</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_6_Member"
      decimals="INF"
      id="ixv-210770"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_7_Member"
      decimals="INF"
      id="ixv-210771"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_8_Member"
      decimals="INF"
      id="ixv-210772"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177884_TH_9_Member"
      decimals="INF"
      id="ixv-210773"
      unitRef="pure">0.045</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-12443">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220379_ClassMember" id="ixv-12447">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220379_ClassMember" id="ixv-12458">Fidelity Freedom&#xae; Index 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220379_ClassMember" id="ixv-12461">Fidelity Freedom&#xae; Index 2045 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220379_ClassMember" id="ixv-12465">FQIPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220379_ClassMember" id="ixv-12484">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220379_ClassMember" id="ixv-12486">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220379_ClassMember" id="ixv-12491">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220379_ClassMember" id="ixv-12493">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220379_ClassMember" id="ixv-12496">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220379_ClassMember" id="ixv-12499">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220379_ClassMember" id="ixv-12506">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220379_ClassMember"
      decimals="0"
      id="ixv-210774"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220379_ClassMember"
      decimals="INF"
      id="ixv-210775"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220379_ClassMember" id="ixv-12548">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220379_ClassMember" id="ixv-12572">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,570,322,474


$2,696,910,965


$2,506,886,552


$3,005,131,673


$3,206,138,060



Fidelity Freedom Index 2045 Composite Index&#x2120;


$2,000,000,000

$2,564,930,037


$2,702,697,201


$2,504,186,394


$3,008,574,171


$3,205,600,618



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220379_LG_ClassMember_6YR" id="ixv-12591">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220379_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210776"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210777"
      unitRef="usd">2570322474</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210778"
      unitRef="usd">2696910965</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210779"
      unitRef="usd">2506886552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210780"
      unitRef="usd">3005131673</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210781"
      unitRef="usd">3206138060</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220379_LG_1_AdditionalIndexMember_6YR"
      id="ixv-12620">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220379_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210782"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210783"
      unitRef="usd">2564930037</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210784"
      unitRef="usd">2702697201</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210785"
      unitRef="usd">2504186394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210786"
      unitRef="usd">3008574171</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210787"
      unitRef="usd">3205600618</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220379_LG_2_AdditionalIndexMember_6YR"
      id="ixv-12649">&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="C000220379_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210788"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210789"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210790"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210791"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210792"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220379_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210793"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220379_ClassMember" id="ixv-12712">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.69%

10.40%


Fidelity Freedom Index 2045 Composite Index&#x2120;

6.55%


10.40%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220379_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210794"
      unitRef="pure">0.0669</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220379_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210795"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220379_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210796"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220379_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210797"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220379_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210798"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220379_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210799"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220379_ClassMember" id="ixv-12767">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220379_ClassMember" id="ixv-12784">&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="C000220379_ClassMember" id="ixv-12788">&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="C000220379_ClassMember" id="ixv-12794">&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;$&lt;/span&gt;20,980,633,428&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;14,374,153&lt;/div&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;13&lt;span 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="C000220379_InstantMember"
      decimals="0"
      id="ixv-210800"
      unitRef="usd">20980633428</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220379_InstantMember"
      decimals="INF"
      id="ixv-210801"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220379_ClassMember"
      decimals="0"
      id="ixv-210802"
      unitRef="usd">14374153</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220379_ClassMember"
      decimals="INF"
      id="ixv-210803"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220379_ClassMember" id="ixv-12869">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000220379_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210804"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220379_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210805"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220379_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210806"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220379_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210807"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220379_ClassMember" id="ixv-12960">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220379_TH_0_Member"
      decimals="INF"
      id="ixv-210808"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220379_TH_1_Member"
      decimals="INF"
      id="ixv-210809"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220379_TH_2_Member"
      decimals="INF"
      id="ixv-210810"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220379_TH_3_Member"
      decimals="INF"
      id="ixv-210811"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220379_TH_4_Member"
      decimals="INF"
      id="ixv-210812"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220379_ClassMember" id="ixv-13035">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220379_ClassMember" id="ixv-13041">&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;1-800-544-3455&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="C000220379_ClassMember" id="ixv-13045">&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="C000220379_ClassMember" id="ixv-13048">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220379_ClassMember" id="ixv-13052">&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="C000220379_ClassMember" id="ixv-13063">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-13128">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252925_ClassMember" id="ixv-13140">Fidelity Freedom&#xae; Index 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252925_ClassMember" id="ixv-13143">Fidelity Freedom&#xae; Index 2070 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252925_ClassMember" id="ixv-13147">FAVWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252925_ClassMember" id="ixv-13166">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2070 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252925_ClassMember" id="ixv-13168">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252925_ClassMember" id="ixv-13173">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252925_ClassMember" id="ixv-13175">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252925_ClassMember" id="ixv-13178">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252925_ClassMember" id="ixv-13181">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252925_ClassMember" id="ixv-13188">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252925_ClassMember"
      decimals="0"
      id="ixv-210813"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252925_ClassMember"
      decimals="INF"
      id="ixv-210814"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252925_ClassMember" id="ixv-13231">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252925_ClassMember" id="ixv-13237">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252925_ClassMember" id="ixv-13261">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,069,015,444



Fidelity Freedom Index 2070 Composite Index&#x2120;


$5,000,000,000

$5,055,971,476



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252925_LG_ClassMember_2YR" id="ixv-13280">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252925_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210815"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252925_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210816"
      unitRef="usd">5069015444</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252925_LG_1_AdditionalIndexMember_2YR"
      id="ixv-13293">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2070 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252925_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210817"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252925_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210818"
      unitRef="usd">5055971476</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252925_LG_2_AdditionalIndexMember_2YR"
      id="ixv-13306">&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="C000252925_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210819"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252925_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210820"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252925_ClassMember" id="ixv-13341">&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;$&lt;/span&gt;49,873,888&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,824&lt;/div&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;9&lt;span 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="C000252925_InstantMember"
      decimals="0"
      id="ixv-210821"
      unitRef="usd">49873888</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252925_InstantMember"
      decimals="INF"
      id="ixv-210822"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252925_ClassMember"
      decimals="0"
      id="ixv-210823"
      unitRef="usd">8824</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252925_ClassMember"
      decimals="INF"
      id="ixv-210824"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252925_ClassMember" id="ixv-13416">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000252925_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210825"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252925_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210826"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252925_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210827"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252925_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210828"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252925_ClassMember" id="ixv-13507">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252925_TH_0_Member"
      decimals="INF"
      id="ixv-210829"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252925_TH_1_Member"
      decimals="INF"
      id="ixv-210830"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252925_TH_2_Member"
      decimals="INF"
      id="ixv-210831"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252925_TH_3_Member"
      decimals="INF"
      id="ixv-210832"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252925_TH_4_Member"
      decimals="INF"
      id="ixv-210833"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-13628">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220383_ClassMember" id="ixv-13632">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220383_ClassMember" id="ixv-13643">Fidelity Freedom&#xae; Index 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220383_ClassMember" id="ixv-13646">Fidelity Freedom&#xae; Index 2010 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220383_ClassMember" id="ixv-13650">FCYPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220383_ClassMember" id="ixv-13669">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220383_ClassMember" id="ixv-13671">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220383_ClassMember" id="ixv-13676">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220383_ClassMember" id="ixv-13678">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220383_ClassMember" id="ixv-13681">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220383_ClassMember" id="ixv-13684">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220383_ClassMember" id="ixv-13691">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220383_ClassMember"
      decimals="0"
      id="ixv-210834"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220383_ClassMember"
      decimals="INF"
      id="ixv-210835"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220383_ClassMember" id="ixv-13733">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220383_ClassMember" id="ixv-13757">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,181,263,394


$2,189,435,914


$2,084,500,431


$2,239,051,130


$2,366,539,244



Fidelity Freedom Index 2010 Composite Index&#x2120;


$2,000,000,000

$2,182,342,947


$2,194,669,131


$2,088,181,925


$2,246,718,486


$2,373,369,726



Bloomberg U.S. Aggregate Bond Index


$2,000,000,000

$1,961,896,920


$1,880,437,250


$1,790,490,276


$1,820,891,361


$1,909,743,644



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220383_LG_ClassMember_6YR" id="ixv-13776">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220383_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210836"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210837"
      unitRef="usd">2181263394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210838"
      unitRef="usd">2189435914</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210839"
      unitRef="usd">2084500431</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210840"
      unitRef="usd">2239051130</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210841"
      unitRef="usd">2366539244</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220383_LG_1_AdditionalIndexMember_6YR"
      id="ixv-13805">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220383_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210842"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210843"
      unitRef="usd">2182342947</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210844"
      unitRef="usd">2194669131</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210845"
      unitRef="usd">2088181925</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210846"
      unitRef="usd">2246718486</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210847"
      unitRef="usd">2373369726</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220383_LG_2_AdditionalIndexMember_6YR"
      id="ixv-13834">&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="C000220383_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210848"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210849"
      unitRef="usd">1961896920</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210850"
      unitRef="usd">1880437250</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210851"
      unitRef="usd">1790490276</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210852"
      unitRef="usd">1820891361</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220383_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210853"
      unitRef="usd">1909743644</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220383_ClassMember" id="ixv-13897">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

5.69%

3.59%


Fidelity Freedom Index 2010 Composite Index&#x2120;

5.64%


3.65%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.96%




A&#160; &#160;From June 24, 2020

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="C000220383_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210854"
      unitRef="pure">0.0569</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220383_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210855"
      unitRef="pure">0.0359</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220383_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210856"
      unitRef="pure">0.0564</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220383_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210857"
      unitRef="pure">0.0365</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220383_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210858"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220383_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210859"
      unitRef="pure">-0.0096</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220383_ClassMember" id="ixv-13953">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220383_ClassMember" id="ixv-13970">&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="C000220383_ClassMember" id="ixv-13974">&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="C000220383_ClassMember" id="ixv-13980">&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;$&lt;/span&gt;715,752,160&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;601,571&lt;/div&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;17&lt;span 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="C000220383_InstantMember"
      decimals="0"
      id="ixv-210860"
      unitRef="usd">715752160</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220383_InstantMember"
      decimals="INF"
      id="ixv-210861"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220383_ClassMember"
      decimals="0"
      id="ixv-210862"
      unitRef="usd">601571</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220383_ClassMember"
      decimals="INF"
      id="ixv-210863"
      unitRef="pure">0.17</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220383_ClassMember" id="ixv-14055">
&#160;
&#160;
&#160;
&#160;
Bond Funds

66.4


Domestic Equity Funds

15.2


International Equity Funds

10.1


Short-Term Funds

8.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 66.4&#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 - 15.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 10.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 8.3&#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="C000220383_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210864"
      unitRef="pure">0.664</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210865"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210866"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-210867"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210868"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220383_ClassMember" id="ixv-14159">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

40.5


&#160;


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

16.0


&#160;


Fidelity Series Total Market Index Fund

15.2


&#160;


Fidelity Series Global ex U.S. Index Fund

10.1


&#160;


Fidelity Series Treasury Bill Index Fund

8.3


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.8


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220383_TH_0_Member"
      decimals="INF"
      id="ixv-210869"
      unitRef="pure">0.405</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_TH_1_Member"
      decimals="INF"
      id="ixv-210870"
      unitRef="pure">0.160</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_TH_2_Member"
      decimals="INF"
      id="ixv-210871"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_TH_3_Member"
      decimals="INF"
      id="ixv-210872"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_TH_4_Member"
      decimals="INF"
      id="ixv-210873"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_TH_5_Member"
      decimals="INF"
      id="ixv-210874"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_TH_6_Member"
      decimals="INF"
      id="ixv-210875"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220383_TH_7_Member"
      decimals="INF"
      id="ixv-210876"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220383_ClassMember" id="ixv-14264">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220383_ClassMember" id="ixv-14270">&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;1-800-544-3455&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="C000220383_ClassMember" id="ixv-14274">&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="C000220383_ClassMember" id="ixv-14277">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220383_ClassMember" id="ixv-14281">&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="C000220383_ClassMember" id="ixv-14292">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-14357">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157963_ClassMember" id="ixv-14369">Fidelity Freedom&#xae; Index 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157963_ClassMember" id="ixv-14372">Fidelity Freedom&#xae; Index 2020 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157963_ClassMember" id="ixv-14376">FIWTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157963_ClassMember" id="ixv-14395">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2020 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157963_ClassMember" id="ixv-14397">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157963_ClassMember" id="ixv-14402">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="C000157963_ClassMember" id="ixv-14404">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157963_ClassMember" id="ixv-14407">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157963_ClassMember" id="ixv-14410">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157963_ClassMember" id="ixv-14417">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157963_ClassMember"
      decimals="0"
      id="ixv-210877"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157963_ClassMember"
      decimals="INF"
      id="ixv-210878"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157963_ClassMember" id="ixv-14459">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157963_ClassMember" id="ixv-14483">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,878,953


$5,354,884


$5,824,460


$6,095,268


$5,999,439


$7,598,626


$7,707,700


$7,216,959


$7,978,500


$8,438,347



Fidelity Freedom Index 2020 Composite Index&#x2120;


$5,000,000

$4,881,305


$5,358,776


$5,832,425


$6,113,486


$6,017,251


$7,637,066


$7,769,695


$7,265,719


$8,043,812


$8,507,175



Bloomberg U.S. Aggregate Bond Index


$5,000,000

$5,192,697


$5,215,571


$5,278,300


$5,514,810


$6,007,488


$6,050,158


$5,798,950


$5,521,569


$5,615,321


$5,889,326



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157963_LG_ClassMember_11YR" id="ixv-14502">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-210879"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-210880"
      unitRef="usd">4878953</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210881"
      unitRef="usd">5354884</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210882"
      unitRef="usd">5824460</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210883"
      unitRef="usd">6095268</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210884"
      unitRef="usd">5999439</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210885"
      unitRef="usd">7598626</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210886"
      unitRef="usd">7707700</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210887"
      unitRef="usd">7216959</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210888"
      unitRef="usd">7978500</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210889"
      unitRef="usd">8438347</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157963_LG_1_AdditionalIndexMember_11YR"
      id="ixv-14551">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210890"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210891"
      unitRef="usd">4881305</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210892"
      unitRef="usd">5358776</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210893"
      unitRef="usd">5832425</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210894"
      unitRef="usd">6113486</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210895"
      unitRef="usd">6017251</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210896"
      unitRef="usd">7637066</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210897"
      unitRef="usd">7769695</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210898"
      unitRef="usd">7265719</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210899"
      unitRef="usd">8043812</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210900"
      unitRef="usd">8507175</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157963_LG_2_AdditionalIndexMember_11YR"
      id="ixv-14600">&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="C000157963_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210901"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210902"
      unitRef="usd">5192697</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210903"
      unitRef="usd">5215571</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210904"
      unitRef="usd">5278300</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210905"
      unitRef="usd">5514810</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210906"
      unitRef="usd">6007488</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210907"
      unitRef="usd">6050158</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210908"
      unitRef="usd">5798950</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210909"
      unitRef="usd">5521569</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210910"
      unitRef="usd">5615321</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157963_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210911"
      unitRef="usd">5889326</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157963_ClassMember" id="ixv-14698">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

5.76%

7.06%

5.50%


Fidelity Freedom Index 2020 Composite Index&#x2120;

5.76%


7.17%


5.59%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.69%




A&#160; &#160;From June 24, 2015

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="C000157963_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210912"
      unitRef="pure">0.0576</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210913"
      unitRef="pure">0.0706</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-210914"
      unitRef="pure">0.0550</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210915"
      unitRef="pure">0.0576</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210916"
      unitRef="pure">0.0717</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-210917"
      unitRef="pure">0.0559</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210918"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210919"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157963_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-210920"
      unitRef="pure">0.0169</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157963_ClassMember" id="ixv-14768">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157963_ClassMember" id="ixv-14785">&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="C000157963_ClassMember" id="ixv-14789">&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="C000157963_ClassMember" id="ixv-14795">&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;$&lt;/span&gt;6,702,986,914&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,494,444&lt;/div&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;13&lt;span 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="C000157963_InstantMember"
      decimals="0"
      id="ixv-210921"
      unitRef="usd">6702986914</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157963_InstantMember"
      decimals="INF"
      id="ixv-210922"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157963_ClassMember"
      decimals="0"
      id="ixv-210923"
      unitRef="usd">5494444</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157963_ClassMember"
      decimals="INF"
      id="ixv-210924"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157963_ClassMember" id="ixv-14870">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.7


Domestic Equity Funds

26.3


International Equity Funds

17.4


Short-Term Funds

2.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.7&#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 - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 17.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 2.6&#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="C000157963_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210925"
      unitRef="pure">0.537</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210926"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210927"
      unitRef="pure">0.174</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-210928"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210929"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157963_ClassMember" id="ixv-14974">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

33.4


&#160;


Fidelity Series Total Market Index Fund

26.3


&#160;


Fidelity Series Global ex U.S. Index Fund

17.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

7.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


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

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.6


&#160;


Fidelity Series Treasury Bill Index Fund

2.6


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157963_TH_0_Member"
      decimals="INF"
      id="ixv-210930"
      unitRef="pure">0.334</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_TH_1_Member"
      decimals="INF"
      id="ixv-210931"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_TH_2_Member"
      decimals="INF"
      id="ixv-210932"
      unitRef="pure">0.174</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_TH_3_Member"
      decimals="INF"
      id="ixv-210933"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_TH_4_Member"
      decimals="INF"
      id="ixv-210934"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_TH_5_Member"
      decimals="INF"
      id="ixv-210935"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_TH_6_Member"
      decimals="INF"
      id="ixv-210936"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157963_TH_7_Member"
      decimals="INF"
      id="ixv-210937"
      unitRef="pure">0.026</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-15125">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000079279_ClassMember" id="ixv-15129">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000079279_ClassMember" id="ixv-15140">Fidelity Freedom&#xae; Index Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000079279_ClassMember" id="ixv-15143">Fidelity Freedom&#xae; Index Income Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079279_ClassMember" id="ixv-15147">FIKFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079279_ClassMember" id="ixv-15166">This annual shareholder report contains information about Fidelity Freedom&#xae; Index Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079279_ClassMember" id="ixv-15168">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079279_ClassMember" id="ixv-15173">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="C000079279_ClassMember" id="ixv-15175">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079279_ClassMember" id="ixv-15178">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079279_ClassMember" id="ixv-15181">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079279_ClassMember" id="ixv-15188">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079279_ClassMember"
      decimals="0"
      id="ixv-210938"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079279_ClassMember"
      decimals="INF"
      id="ixv-210939"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079279_ClassMember" id="ixv-15230">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079279_ClassMember" id="ixv-15254">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$10,010


$10,412


$10,831


$11,273


$11,706


$12,844


$12,780


$12,281


$13,015


$13,732



Fidelity Freedom Index Income Composite Index&#x2120;


$10,000

$10,017


$10,431


$10,867


$11,329


$11,773


$12,951


$12,913


$12,420


$13,183


$13,913



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,196


$10,241


$10,364


$10,829


$11,796


$11,880


$11,386


$10,842


$11,026


$11,564



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079279_LG_ClassMember_11YR" id="ixv-15273">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-210940"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-210941"
      unitRef="usd">10010</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-210942"
      unitRef="usd">10412</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-210943"
      unitRef="usd">10831</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-210944"
      unitRef="usd">11273</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-210945"
      unitRef="usd">11706</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-210946"
      unitRef="usd">12844</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-210947"
      unitRef="usd">12780</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-210948"
      unitRef="usd">12281</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-210949"
      unitRef="usd">13015</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-210950"
      unitRef="usd">13732</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079279_LG_1_AdditionalIndexMember_11YR"
      id="ixv-15322">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210951"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210952"
      unitRef="usd">10017</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210953"
      unitRef="usd">10431</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210954"
      unitRef="usd">10867</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210955"
      unitRef="usd">11329</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210956"
      unitRef="usd">11773</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210957"
      unitRef="usd">12951</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210958"
      unitRef="usd">12913</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210959"
      unitRef="usd">12420</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210960"
      unitRef="usd">13183</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210961"
      unitRef="usd">13913</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079279_LG_2_AdditionalIndexMember_11YR"
      id="ixv-15371">&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="C000079279_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-210962"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-210963"
      unitRef="usd">10196</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-210964"
      unitRef="usd">10241</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-210965"
      unitRef="usd">10364</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-210966"
      unitRef="usd">10829</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-210967"
      unitRef="usd">11796</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-210968"
      unitRef="usd">11880</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-210969"
      unitRef="usd">11386</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-210970"
      unitRef="usd">10842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-210971"
      unitRef="usd">11026</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079279_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-210972"
      unitRef="usd">11564</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079279_ClassMember" id="ixv-15469">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

5.51%

3.24%

3.22%


Fidelity Freedom Index Income Composite Index&#x2120;

5.54%


3.40%


3.36%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.46%




&#160;
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="C000079279_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-210973"
      unitRef="pure">0.0551</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-210974"
      unitRef="pure">0.0324</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-210975"
      unitRef="pure">0.0322</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-210976"
      unitRef="pure">0.0554</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-210977"
      unitRef="pure">0.0340</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-210978"
      unitRef="pure">0.0336</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-210979"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-210980"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079279_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-210981"
      unitRef="pure">0.0146</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079279_ClassMember" id="ixv-15547">&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="C000079279_ClassMember" id="ixv-15551">&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="C000079279_ClassMember" id="ixv-15557">&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;$&lt;/span&gt;1,694,169,632&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,195,611&lt;/div&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;18&lt;span 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="C000079279_InstantMember"
      decimals="0"
      id="ixv-210982"
      unitRef="usd">1694169632</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000079279_InstantMember"
      decimals="INF"
      id="ixv-210983"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000079279_ClassMember"
      decimals="0"
      id="ixv-210984"
      unitRef="usd">1195611</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000079279_ClassMember"
      decimals="INF"
      id="ixv-210985"
      unitRef="pure">0.18</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000079279_ClassMember" id="ixv-15632">
&#160;
&#160;
&#160;
&#160;
Bond Funds

70.9


Domestic Equity Funds

11.5


Short-Term Funds

10.0


International Equity Funds

7.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 70.9&#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 - 11.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 10.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 7.6&#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="C000079279_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-210986"
      unitRef="pure">0.709</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-210987"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-210988"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-210989"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-210990"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000079279_ClassMember" id="ixv-15736">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

43.1


&#160;


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

19.9


&#160;


Fidelity Series Total Market Index Fund

11.5


&#160;


Fidelity Series Treasury Bill Index Fund

10.0


&#160;


Fidelity Series Global ex U.S. Index Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079279_TH_0_Member"
      decimals="INF"
      id="ixv-210991"
      unitRef="pure">0.431</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_TH_1_Member"
      decimals="INF"
      id="ixv-210992"
      unitRef="pure">0.199</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_TH_2_Member"
      decimals="INF"
      id="ixv-210993"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_TH_3_Member"
      decimals="INF"
      id="ixv-210994"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_TH_4_Member"
      decimals="INF"
      id="ixv-210995"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_TH_5_Member"
      decimals="INF"
      id="ixv-210996"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079279_TH_6_Member"
      decimals="INF"
      id="ixv-210997"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000079279_ClassMember" id="ixv-15831">
&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;Fidelity Freedom&#xae; Index 2005 Fund merged into Fidelity Freedom&#xae; Index Income Fund on June 14, 2024.&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="C000079279_ClassMember" id="ixv-15837">&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="C000079279_ClassMember" id="ixv-15841">&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="C000079279_ClassMember" id="ixv-15844">&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="C000079279_ClassMember" id="ixv-15848">&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-15914">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000252924_ClassMember" id="ixv-15918">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000252924_ClassMember" id="ixv-15929">Fidelity Freedom&#xae; Index 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252924_ClassMember" id="ixv-15932">Fidelity Freedom&#xae; Index 2065 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252924_ClassMember" id="ixv-15936">FAVVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252924_ClassMember" id="ixv-15955">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2065 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252924_ClassMember" id="ixv-15957">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252924_ClassMember" id="ixv-15962">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252924_ClassMember" id="ixv-15964">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252924_ClassMember" id="ixv-15967">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252924_ClassMember" id="ixv-15970">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252924_ClassMember" id="ixv-15977">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252924_ClassMember"
      decimals="0"
      id="ixv-210998"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252924_ClassMember"
      decimals="INF"
      id="ixv-210999"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252924_ClassMember" id="ixv-16020">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252924_ClassMember" id="ixv-16026">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252924_ClassMember" id="ixv-16050">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,072,782,556



Fidelity Freedom Index 2065 Composite Index&#x2120;


$5,000,000,000

$5,055,971,476



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252924_LG_ClassMember_2YR" id="ixv-16069">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252924_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211000"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252924_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211001"
      unitRef="usd">5072782556</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252924_LG_1_AdditionalIndexMember_2YR"
      id="ixv-16082">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252924_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211002"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252924_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211003"
      unitRef="usd">5055971476</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252924_LG_2_AdditionalIndexMember_2YR"
      id="ixv-16095">&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="C000252924_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211004"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252924_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211005"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252924_ClassMember" id="ixv-16130">&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;$&lt;/span&gt;2,824,283,726&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,688,737&lt;/div&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;9&lt;span 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="C000252924_InstantMember"
      decimals="0"
      id="ixv-211006"
      unitRef="usd">2824283726</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252924_InstantMember"
      decimals="INF"
      id="ixv-211007"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252924_ClassMember"
      decimals="0"
      id="ixv-211008"
      unitRef="usd">1688737</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252924_ClassMember"
      decimals="INF"
      id="ixv-211009"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252924_ClassMember" id="ixv-16205">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000252924_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211010"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252924_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211011"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252924_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211012"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252924_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211013"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252924_ClassMember" id="ixv-16296">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252924_TH_0_Member"
      decimals="INF"
      id="ixv-211014"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252924_TH_1_Member"
      decimals="INF"
      id="ixv-211015"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252924_TH_2_Member"
      decimals="INF"
      id="ixv-211016"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252924_TH_3_Member"
      decimals="INF"
      id="ixv-211017"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252924_TH_4_Member"
      decimals="INF"
      id="ixv-211018"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000252924_ClassMember" id="ixv-16371">
&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 August 22, 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;1-800-544-3455&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&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;/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="C000252924_ClassMember" id="ixv-16377">&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 August 22, 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;1-800-544-3455&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="C000252924_ClassMember" id="ixv-16381">&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="C000252924_ClassMember" id="ixv-16384">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000252924_ClassMember" id="ixv-16388">&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="C000252924_ClassMember" id="ixv-16399">&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&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;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-16460">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220381_ClassMember" id="ixv-16464">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220381_ClassMember" id="ixv-16475">Fidelity Freedom&#xae; Index Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000220381_ClassMember" id="ixv-16478">Fidelity Freedom&#xae; Index Income Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220381_ClassMember" id="ixv-16482">FAPIX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220381_ClassMember" id="ixv-16501">This annual shareholder report contains information about Fidelity Freedom&#xae; Index Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220381_ClassMember" id="ixv-16503">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220381_ClassMember" id="ixv-16508">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220381_ClassMember" id="ixv-16510">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220381_ClassMember" id="ixv-16513">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220381_ClassMember" id="ixv-16516">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220381_ClassMember" id="ixv-16523">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220381_ClassMember"
      decimals="0"
      id="ixv-211019"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220381_ClassMember"
      decimals="INF"
      id="ixv-211020"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220381_ClassMember" id="ixv-16565">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220381_ClassMember" id="ixv-16589">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,091,843,329


$2,083,390,998


$2,004,697,552


$2,124,065,237


$2,242,912,626



Fidelity Freedom Index Income Composite Index&#x2120;


$2,000,000,000

$2,095,171,776


$2,089,038,150


$2,009,321,989


$2,132,760,115


$2,250,880,790



Bloomberg U.S. Aggregate Bond Index


$2,000,000,000

$1,961,896,920


$1,880,437,250


$1,790,490,276


$1,820,891,361


$1,909,743,644



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220381_LG_ClassMember_6YR" id="ixv-16608">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220381_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211021"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211022"
      unitRef="usd">2091843329</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211023"
      unitRef="usd">2083390998</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211024"
      unitRef="usd">2004697552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211025"
      unitRef="usd">2124065237</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211026"
      unitRef="usd">2242912626</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220381_LG_1_AdditionalIndexMember_6YR"
      id="ixv-16637">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220381_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211027"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211028"
      unitRef="usd">2095171776</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211029"
      unitRef="usd">2089038150</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211030"
      unitRef="usd">2009321989</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211031"
      unitRef="usd">2132760115</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211032"
      unitRef="usd">2250880790</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220381_LG_2_AdditionalIndexMember_6YR"
      id="ixv-16666">&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="C000220381_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211033"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211034"
      unitRef="usd">1961896920</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211035"
      unitRef="usd">1880437250</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211036"
      unitRef="usd">1790490276</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211037"
      unitRef="usd">1820891361</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220381_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211038"
      unitRef="usd">1909743644</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220381_ClassMember" id="ixv-16729">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

5.60%

2.43%


Fidelity Freedom Index Income Composite Index&#x2120;

5.54%


2.51%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.96%




A&#160; &#160;From June 24, 2020

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="C000220381_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211039"
      unitRef="pure">0.0560</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220381_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211040"
      unitRef="pure">0.0243</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220381_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211041"
      unitRef="pure">0.0554</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220381_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211042"
      unitRef="pure">0.0251</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220381_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211043"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220381_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211044"
      unitRef="pure">-0.0096</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220381_ClassMember" id="ixv-16785">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220381_ClassMember" id="ixv-16802">&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="C000220381_ClassMember" id="ixv-16806">&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="C000220381_ClassMember" id="ixv-16812">&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;$&lt;/span&gt;1,694,169,632&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,195,611&lt;/div&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;18&lt;span 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="C000220381_InstantMember"
      decimals="0"
      id="ixv-211045"
      unitRef="usd">1694169632</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220381_InstantMember"
      decimals="INF"
      id="ixv-211046"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220381_ClassMember"
      decimals="0"
      id="ixv-211047"
      unitRef="usd">1195611</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220381_ClassMember"
      decimals="INF"
      id="ixv-211048"
      unitRef="pure">0.18</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220381_ClassMember" id="ixv-16887">
&#160;
&#160;
&#160;
&#160;
Bond Funds

70.9


Domestic Equity Funds

11.5


Short-Term Funds

10.0


International Equity Funds

7.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 70.9&#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 - 11.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 10.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 7.6&#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="C000220381_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211049"
      unitRef="pure">0.709</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211050"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-211051"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211052"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211053"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220381_ClassMember" id="ixv-16991">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

43.1


&#160;


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

19.9


&#160;


Fidelity Series Total Market Index Fund

11.5


&#160;


Fidelity Series Treasury Bill Index Fund

10.0


&#160;


Fidelity Series Global ex U.S. Index Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220381_TH_0_Member"
      decimals="INF"
      id="ixv-211054"
      unitRef="pure">0.431</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_TH_1_Member"
      decimals="INF"
      id="ixv-211055"
      unitRef="pure">0.199</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_TH_2_Member"
      decimals="INF"
      id="ixv-211056"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_TH_3_Member"
      decimals="INF"
      id="ixv-211057"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_TH_4_Member"
      decimals="INF"
      id="ixv-211058"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_TH_5_Member"
      decimals="INF"
      id="ixv-211059"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220381_TH_6_Member"
      decimals="INF"
      id="ixv-211060"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220381_ClassMember" id="ixv-17086">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom&#xae; Index 2005 Fund merged into Fidelity Freedom&#xae; Index Income Fund on June 14, 2024.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;br/&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="C000220381_ClassMember" id="ixv-17092">&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;1-800-544-3455&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="C000220381_ClassMember" id="ixv-17096">&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="C000220381_ClassMember" id="ixv-17099">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220381_ClassMember" id="ixv-17103">&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="C000220381_ClassMember" id="ixv-17114">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-17183">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220387_ClassMember" id="ixv-17187">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220387_ClassMember" id="ixv-17198">Fidelity Freedom&#xae; Index 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220387_ClassMember" id="ixv-17201">Fidelity Freedom&#xae; Index 2030 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220387_ClassMember" id="ixv-17205">FMKPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220387_ClassMember" id="ixv-17224">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220387_ClassMember" id="ixv-17226">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220387_ClassMember" id="ixv-17231">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220387_ClassMember" id="ixv-17233">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220387_ClassMember" id="ixv-17236">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220387_ClassMember" id="ixv-17239">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220387_ClassMember" id="ixv-17246">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220387_ClassMember"
      decimals="0"
      id="ixv-211061"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220387_ClassMember"
      decimals="INF"
      id="ixv-211062"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220387_ClassMember" id="ixv-17288">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220387_ClassMember" id="ixv-17312">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,395,521,257


$2,456,446,567


$2,294,660,552


$2,603,270,947


$2,760,173,624



Fidelity Freedom Index 2030 Composite Index&#x2120;


$2,000,000,000

$2,393,696,189


$2,462,376,612


$2,295,706,894


$2,609,263,392


$2,763,556,732



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220387_LG_ClassMember_6YR" id="ixv-17331">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220387_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211063"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211064"
      unitRef="usd">2395521257</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211065"
      unitRef="usd">2456446567</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211066"
      unitRef="usd">2294660552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211067"
      unitRef="usd">2603270947</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211068"
      unitRef="usd">2760173624</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220387_LG_1_AdditionalIndexMember_6YR"
      id="ixv-17360">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220387_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211069"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211070"
      unitRef="usd">2393696189</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211071"
      unitRef="usd">2462376612</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211072"
      unitRef="usd">2295706894</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211073"
      unitRef="usd">2609263392</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211074"
      unitRef="usd">2763556732</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220387_LG_2_AdditionalIndexMember_6YR"
      id="ixv-17389">&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="C000220387_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211075"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211076"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211077"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211078"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211079"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220387_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211080"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220387_ClassMember" id="ixv-17452">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.03%

6.99%


Fidelity Freedom Index 2030 Composite Index&#x2120;

5.91%


7.01%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220387_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211081"
      unitRef="pure">0.0603</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220387_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211082"
      unitRef="pure">0.0699</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220387_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211083"
      unitRef="pure">0.0591</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220387_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211084"
      unitRef="pure">0.0701</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220387_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211085"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220387_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211086"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220387_ClassMember" id="ixv-17507">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220387_ClassMember" id="ixv-17524">&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="C000220387_ClassMember" id="ixv-17528">&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="C000220387_ClassMember" id="ixv-17534">&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;$&lt;/span&gt;22,276,385,405&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,374,719&lt;/div&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;14&lt;span 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="C000220387_InstantMember"
      decimals="0"
      id="ixv-211087"
      unitRef="usd">22276385405</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220387_InstantMember"
      decimals="INF"
      id="ixv-211088"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220387_ClassMember"
      decimals="0"
      id="ixv-211089"
      unitRef="usd">16374719</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220387_ClassMember"
      decimals="INF"
      id="ixv-211090"
      unitRef="pure">0.14</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220387_ClassMember" id="ixv-17609">
&#160;
&#160;
&#160;
&#160;
Bond Funds

41.5


Domestic Equity Funds

35.2


International Equity Funds

23.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 41.5&#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 - 35.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 23.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220387_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211091"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211092"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211093"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211094"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220387_ClassMember" id="ixv-17700">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

35.2


&#160;


Fidelity Series Bond Index Fund

26.6


&#160;


Fidelity Series Global ex U.S. Index Fund

23.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220387_TH_0_Member"
      decimals="INF"
      id="ixv-211095"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_TH_1_Member"
      decimals="INF"
      id="ixv-211096"
      unitRef="pure">0.266</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_TH_2_Member"
      decimals="INF"
      id="ixv-211097"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_TH_3_Member"
      decimals="INF"
      id="ixv-211098"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_TH_4_Member"
      decimals="INF"
      id="ixv-211099"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220387_TH_5_Member"
      decimals="INF"
      id="ixv-211100"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220387_ClassMember" id="ixv-17785">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220387_ClassMember" id="ixv-17791">&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;1-800-544-3455&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="C000220387_ClassMember" id="ixv-17795">&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="C000220387_ClassMember" id="ixv-17798">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220387_ClassMember" id="ixv-17802">&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="C000220387_ClassMember" id="ixv-17813">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-17878">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252923_ClassMember" id="ixv-17890">Fidelity Freedom&#xae; Index 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252923_ClassMember" id="ixv-17893">Fidelity Freedom&#xae; Index 2060 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252923_ClassMember" id="ixv-17897">FAVUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252923_ClassMember" id="ixv-17916">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2060 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252923_ClassMember" id="ixv-17918">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252923_ClassMember" id="ixv-17923">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252923_ClassMember" id="ixv-17925">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252923_ClassMember" id="ixv-17928">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252923_ClassMember" id="ixv-17931">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252923_ClassMember" id="ixv-17938">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252923_ClassMember"
      decimals="0"
      id="ixv-211101"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252923_ClassMember"
      decimals="INF"
      id="ixv-211102"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252923_ClassMember" id="ixv-17981">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252923_ClassMember" id="ixv-17987">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252923_ClassMember" id="ixv-18011">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,071,383,824



Fidelity Freedom Index 2060 Composite Index&#x2120;


$5,000,000,000

$5,055,971,476



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252923_LG_ClassMember_2YR" id="ixv-18030">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252923_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211103"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252923_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211104"
      unitRef="usd">5071383824</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252923_LG_1_AdditionalIndexMember_2YR"
      id="ixv-18043">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252923_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211105"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252923_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211106"
      unitRef="usd">5055971476</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252923_LG_2_AdditionalIndexMember_2YR"
      id="ixv-18056">&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="C000252923_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211107"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252923_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211108"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252923_ClassMember" id="ixv-18091">&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;$&lt;/span&gt;8,623,848,580&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,700,606&lt;/div&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;11&lt;span 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="C000252923_InstantMember"
      decimals="0"
      id="ixv-211109"
      unitRef="usd">8623848580</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252923_InstantMember"
      decimals="INF"
      id="ixv-211110"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252923_ClassMember"
      decimals="0"
      id="ixv-211111"
      unitRef="usd">5700606</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252923_ClassMember"
      decimals="INF"
      id="ixv-211112"
      unitRef="pure">0.11</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252923_ClassMember" id="ixv-18166">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000252923_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211113"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252923_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211114"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252923_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211115"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252923_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211116"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252923_ClassMember" id="ixv-18257">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252923_TH_0_Member"
      decimals="INF"
      id="ixv-211117"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252923_TH_1_Member"
      decimals="INF"
      id="ixv-211118"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252923_TH_2_Member"
      decimals="INF"
      id="ixv-211119"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252923_TH_3_Member"
      decimals="INF"
      id="ixv-211120"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252923_TH_4_Member"
      decimals="INF"
      id="ixv-211121"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-18378">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252921_ClassMember" id="ixv-18390">Fidelity Freedom&#xae; Index 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252921_ClassMember" id="ixv-18393">Fidelity Freedom&#xae; Index 2040 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252921_ClassMember" id="ixv-18397">FAVOX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252921_ClassMember" id="ixv-18416">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2040 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252921_ClassMember" id="ixv-18418">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252921_ClassMember" id="ixv-18423">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252921_ClassMember" id="ixv-18425">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252921_ClassMember" id="ixv-18428">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252921_ClassMember" id="ixv-18431">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252921_ClassMember" id="ixv-18438">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252921_ClassMember"
      decimals="0"
      id="ixv-211122"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252921_ClassMember"
      decimals="INF"
      id="ixv-211123"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252921_ClassMember" id="ixv-18481">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252921_ClassMember" id="ixv-18487">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252921_ClassMember" id="ixv-18511">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,072,162,960



Fidelity Freedom Index 2040 Composite Index&#x2120;


$5,000,000,000

$5,056,580,824



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252921_LG_ClassMember_2YR" id="ixv-18530">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252921_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211124"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252921_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211125"
      unitRef="usd">5072162960</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252921_LG_1_AdditionalIndexMember_2YR"
      id="ixv-18543">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252921_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211126"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252921_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211127"
      unitRef="usd">5056580824</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252921_LG_2_AdditionalIndexMember_2YR"
      id="ixv-18556">&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="C000252921_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211128"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252921_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211129"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252921_ClassMember" id="ixv-18591">&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;$&lt;/span&gt;23,680,015,185&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,584,331&lt;/div&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;13&lt;span 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="C000252921_InstantMember"
      decimals="0"
      id="ixv-211130"
      unitRef="usd">23680015185</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252921_InstantMember"
      decimals="INF"
      id="ixv-211131"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252921_ClassMember"
      decimals="0"
      id="ixv-211132"
      unitRef="usd">16584331</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252921_ClassMember"
      decimals="INF"
      id="ixv-211133"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252921_ClassMember" id="ixv-18666">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

49.6


International Equity Funds

32.8


Bond Funds

17.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 49.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 17.6&#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="C000252921_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211134"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252921_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211135"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252921_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211136"
      unitRef="pure">0.176</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252921_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211137"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252921_ClassMember" id="ixv-18757">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

49.6


&#160;


Fidelity Series Global ex U.S. Index Fund

32.8


&#160;


Fidelity Series Bond Index Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252921_TH_0_Member"
      decimals="INF"
      id="ixv-211138"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252921_TH_1_Member"
      decimals="INF"
      id="ixv-211139"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252921_TH_2_Member"
      decimals="INF"
      id="ixv-211140"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252921_TH_3_Member"
      decimals="INF"
      id="ixv-211141"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252921_TH_4_Member"
      decimals="INF"
      id="ixv-211142"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-18878">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157958_ClassMember" id="ixv-18890">Fidelity Freedom&#xae; Index 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157958_ClassMember" id="ixv-18893">Fidelity Freedom&#xae; Index 2050 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157958_ClassMember" id="ixv-18897">FFOPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157958_ClassMember" id="ixv-18916">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157958_ClassMember" id="ixv-18918">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157958_ClassMember" id="ixv-18923">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="C000157958_ClassMember" id="ixv-18925">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157958_ClassMember" id="ixv-18928">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157958_ClassMember" id="ixv-18931">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157958_ClassMember" id="ixv-18938">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157958_ClassMember"
      decimals="0"
      id="ixv-211143"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157958_ClassMember"
      decimals="INF"
      id="ixv-211144"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157958_ClassMember" id="ixv-18980">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157958_ClassMember" id="ixv-19004">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,748,136


$5,454,717


$6,174,776


$6,458,022


$5,882,506


$8,821,666


$9,256,288


$8,598,589


$10,311,034


$10,996,016



Fidelity Freedom Index 2050 Composite Index&#x2120;


$5,000,000

$4,751,667


$5,459,524


$6,179,499


$6,477,152


$5,908,057


$8,862,422


$9,338,439


$8,652,539


$10,395,314


$11,076,086



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157958_LG_ClassMember_11YR" id="ixv-19023">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-211145"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-211146"
      unitRef="usd">4748136</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211147"
      unitRef="usd">5454717</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211148"
      unitRef="usd">6174776</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211149"
      unitRef="usd">6458022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211150"
      unitRef="usd">5882506</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211151"
      unitRef="usd">8821666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211152"
      unitRef="usd">9256288</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211153"
      unitRef="usd">8598589</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211154"
      unitRef="usd">10311034</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211155"
      unitRef="usd">10996016</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157958_LG_1_AdditionalIndexMember_11YR"
      id="ixv-19072">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211156"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211157"
      unitRef="usd">4751667</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211158"
      unitRef="usd">5459524</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211159"
      unitRef="usd">6179499</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211160"
      unitRef="usd">6477152</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211161"
      unitRef="usd">5908057</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211162"
      unitRef="usd">8862422</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211163"
      unitRef="usd">9338439</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211164"
      unitRef="usd">8652539</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211165"
      unitRef="usd">10395314</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211166"
      unitRef="usd">11076086</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157958_LG_2_AdditionalIndexMember_11YR"
      id="ixv-19121">&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="C000157958_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211167"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211168"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211169"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211170"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211171"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211172"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211173"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211174"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211175"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211176"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157958_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211177"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157958_ClassMember" id="ixv-19219">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

6.64%

13.33%

8.40%


Fidelity Freedom Index 2050 Composite Index&#x2120;

6.55%


13.39%


8.48%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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="C000157958_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211178"
      unitRef="pure">0.0664</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211179"
      unitRef="pure">0.1333</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211180"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211181"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211182"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211183"
      unitRef="pure">0.0848</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211184"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211185"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157958_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211186"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157958_ClassMember" id="ixv-19288">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157958_ClassMember" id="ixv-19305">&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="C000157958_ClassMember" id="ixv-19309">&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="C000157958_ClassMember" id="ixv-19315">&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;$&lt;/span&gt;20,141,523,508&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,737,175&lt;/div&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;12&lt;span 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="C000157958_InstantMember"
      decimals="0"
      id="ixv-211187"
      unitRef="usd">20141523508</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157958_InstantMember"
      decimals="INF"
      id="ixv-211188"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157958_ClassMember"
      decimals="0"
      id="ixv-211189"
      unitRef="usd">13737175</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157958_ClassMember"
      decimals="INF"
      id="ixv-211190"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157958_ClassMember" id="ixv-19390">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000157958_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211191"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157958_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211192"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157958_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211193"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157958_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211194"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157958_ClassMember" id="ixv-19481">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157958_TH_0_Member"
      decimals="INF"
      id="ixv-211195"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157958_TH_1_Member"
      decimals="INF"
      id="ixv-211196"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157958_TH_2_Member"
      decimals="INF"
      id="ixv-211197"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157958_TH_3_Member"
      decimals="INF"
      id="ixv-211198"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157958_TH_4_Member"
      decimals="INF"
      id="ixv-211199"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-19602">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220388_ClassMember" id="ixv-19606">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220388_ClassMember" id="ixv-19617">Fidelity Freedom&#xae; Index 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220388_ClassMember" id="ixv-19620">Fidelity Freedom&#xae; Index 2035 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220388_ClassMember" id="ixv-19624">FNIPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220388_ClassMember" id="ixv-19643">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220388_ClassMember" id="ixv-19645">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220388_ClassMember" id="ixv-19650">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220388_ClassMember" id="ixv-19652">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220388_ClassMember" id="ixv-19655">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220388_ClassMember" id="ixv-19658">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220388_ClassMember" id="ixv-19665">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220388_ClassMember"
      decimals="0"
      id="ixv-211200"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220388_ClassMember"
      decimals="INF"
      id="ixv-211201"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220388_ClassMember" id="ixv-19707">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220388_ClassMember" id="ixv-19731">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,501,127,749


$2,596,101,749


$2,418,349,910


$2,808,088,492


$2,983,580,328



Fidelity Freedom Index 2035 Composite Index&#x2120;


$2,000,000,000

$2,496,975,851


$2,602,077,379


$2,417,372,699


$2,812,246,489


$2,985,413,855



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220388_LG_ClassMember_6YR" id="ixv-19750">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220388_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211202"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211203"
      unitRef="usd">2501127749</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211204"
      unitRef="usd">2596101749</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211205"
      unitRef="usd">2418349910</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211206"
      unitRef="usd">2808088492</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211207"
      unitRef="usd">2983580328</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220388_LG_1_AdditionalIndexMember_6YR"
      id="ixv-19779">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220388_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211208"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211209"
      unitRef="usd">2496975851</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211210"
      unitRef="usd">2602077379</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211211"
      unitRef="usd">2417372699</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211212"
      unitRef="usd">2812246489</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211213"
      unitRef="usd">2985413855</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220388_LG_2_AdditionalIndexMember_6YR"
      id="ixv-19808">&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="C000220388_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211214"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211215"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211216"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211217"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211218"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220388_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211219"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220388_ClassMember" id="ixv-19871">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.25%

8.75%


Fidelity Freedom Index 2035 Composite Index&#x2120;

6.16%


8.76%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220388_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211220"
      unitRef="pure">0.0625</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220388_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211221"
      unitRef="pure">0.0875</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220388_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211222"
      unitRef="pure">0.0616</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220388_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211223"
      unitRef="pure">0.0876</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220388_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211224"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220388_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211225"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220388_ClassMember" id="ixv-19926">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220388_ClassMember" id="ixv-19943">&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="C000220388_ClassMember" id="ixv-19947">&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="C000220388_ClassMember" id="ixv-19953">&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;$&lt;/span&gt;23,218,218,191&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,510,342&lt;/div&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="C000220388_InstantMember"
      decimals="0"
      id="ixv-211226"
      unitRef="usd">23218218191</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220388_InstantMember"
      decimals="INF"
      id="ixv-211227"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220388_ClassMember"
      decimals="0"
      id="ixv-211228"
      unitRef="usd">16510342</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220388_ClassMember"
      decimals="INF"
      id="ixv-211229"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220388_ClassMember" id="ixv-20028">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

40.8


Bond Funds

32.3


International Equity Funds

26.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 40.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 32.3&#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 - 26.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220388_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211230"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211231"
      unitRef="pure">0.323</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211232"
      unitRef="pure">0.269</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211233"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220388_ClassMember" id="ixv-20119">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

40.8


&#160;


Fidelity Series Global ex U.S. Index Fund

26.9


&#160;


Fidelity Series Bond Index Fund

21.7


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220388_TH_0_Member"
      decimals="INF"
      id="ixv-211234"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_TH_1_Member"
      decimals="INF"
      id="ixv-211235"
      unitRef="pure">0.269</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_TH_2_Member"
      decimals="INF"
      id="ixv-211236"
      unitRef="pure">0.217</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_TH_3_Member"
      decimals="INF"
      id="ixv-211237"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_TH_4_Member"
      decimals="INF"
      id="ixv-211238"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220388_TH_5_Member"
      decimals="INF"
      id="ixv-211239"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220388_ClassMember" id="ixv-20204">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220388_ClassMember" id="ixv-20210">&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;1-800-544-3455&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="C000220388_ClassMember" id="ixv-20214">&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="C000220388_ClassMember" id="ixv-20217">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220388_ClassMember" id="ixv-20221">&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="C000220388_ClassMember" id="ixv-20232">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-20297">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252915_ClassMember" id="ixv-20309">Fidelity Freedom&#xae; Index 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252915_ClassMember" id="ixv-20312">Fidelity Freedom&#xae; Index 2010 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252915_ClassMember" id="ixv-20316">FATUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252915_ClassMember" id="ixv-20335">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2010 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252915_ClassMember" id="ixv-20337">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252915_ClassMember" id="ixv-20342">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252915_ClassMember" id="ixv-20344">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252915_ClassMember" id="ixv-20347">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252915_ClassMember" id="ixv-20350">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252915_ClassMember" id="ixv-20357">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252915_ClassMember"
      decimals="0"
      id="ixv-211240"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252915_ClassMember"
      decimals="INF"
      id="ixv-211241"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252915_ClassMember" id="ixv-20400">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252915_ClassMember" id="ixv-20406">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252915_ClassMember" id="ixv-20430">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,081,393,900



Fidelity Freedom Index 2010 Composite Index&#x2120;


$5,000,000,000

$5,079,680,557



Bloomberg U.S. Aggregate Bond Index


$5,000,000,000

$5,042,673,521



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252915_LG_ClassMember_2YR" id="ixv-20449">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252915_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211242"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252915_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211243"
      unitRef="usd">5081393900</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252915_LG_1_AdditionalIndexMember_2YR"
      id="ixv-20462">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252915_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211244"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252915_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211245"
      unitRef="usd">5079680557</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252915_LG_2_AdditionalIndexMember_2YR"
      id="ixv-20475">&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="C000252915_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211246"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252915_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211247"
      unitRef="usd">5042673521</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252915_ClassMember" id="ixv-20510">&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;$&lt;/span&gt;715,752,160&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;601,571&lt;/div&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;17&lt;span 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="C000252915_InstantMember"
      decimals="0"
      id="ixv-211248"
      unitRef="usd">715752160</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252915_InstantMember"
      decimals="INF"
      id="ixv-211249"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252915_ClassMember"
      decimals="0"
      id="ixv-211250"
      unitRef="usd">601571</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252915_ClassMember"
      decimals="INF"
      id="ixv-211251"
      unitRef="pure">0.17</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252915_ClassMember" id="ixv-20585">
&#160;
&#160;
&#160;
&#160;
Bond Funds

66.4


Domestic Equity Funds

15.2


International Equity Funds

10.1


Short-Term Funds

8.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 66.4&#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 - 15.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 10.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 8.3&#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="C000252915_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211252"
      unitRef="pure">0.664</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211253"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211254"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-211255"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211256"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252915_ClassMember" id="ixv-20689">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

40.5


&#160;


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

16.0


&#160;


Fidelity Series Total Market Index Fund

15.2


&#160;


Fidelity Series Global ex U.S. Index Fund

10.1


&#160;


Fidelity Series Treasury Bill Index Fund

8.3


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.8


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252915_TH_0_Member"
      decimals="INF"
      id="ixv-211257"
      unitRef="pure">0.405</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_TH_1_Member"
      decimals="INF"
      id="ixv-211258"
      unitRef="pure">0.160</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_TH_2_Member"
      decimals="INF"
      id="ixv-211259"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_TH_3_Member"
      decimals="INF"
      id="ixv-211260"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_TH_4_Member"
      decimals="INF"
      id="ixv-211261"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_TH_5_Member"
      decimals="INF"
      id="ixv-211262"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_TH_6_Member"
      decimals="INF"
      id="ixv-211263"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252915_TH_7_Member"
      decimals="INF"
      id="ixv-211264"
      unitRef="pure">0.018</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-20840">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000101225_ClassMember" id="ixv-20852">Fidelity Freedom&#xae; Index 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000101225_ClassMember" id="ixv-20855">Fidelity Freedom&#xae; Index 2055 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000101225_ClassMember" id="ixv-20859">FDEWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000101225_ClassMember" id="ixv-20878">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000101225_ClassMember" id="ixv-20880">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000101225_ClassMember" id="ixv-20885">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="C000101225_ClassMember" id="ixv-20887">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000101225_ClassMember" id="ixv-20890">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000101225_ClassMember" id="ixv-20893">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000101225_ClassMember" id="ixv-20900">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000101225_ClassMember"
      decimals="0"
      id="ixv-211265"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000101225_ClassMember"
      decimals="INF"
      id="ixv-211266"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000101225_ClassMember" id="ixv-20942">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000101225_ClassMember" id="ixv-20966">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,704


$11,150


$12,610


$13,185


$12,006


$17,995


$18,873


$17,531


$21,007


$22,399



Fidelity Freedom Index 2055 Composite Index&#x2120;


$10,000

$9,728


$11,177


$12,651


$13,260


$12,095


$18,143


$19,118


$17,714


$21,282


$22,675



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000101225_LG_ClassMember_11YR" id="ixv-20985">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-211267"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-211268"
      unitRef="usd">9704</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211269"
      unitRef="usd">11150</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211270"
      unitRef="usd">12610</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211271"
      unitRef="usd">13185</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211272"
      unitRef="usd">12006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211273"
      unitRef="usd">17995</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211274"
      unitRef="usd">18873</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211275"
      unitRef="usd">17531</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211276"
      unitRef="usd">21007</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211277"
      unitRef="usd">22399</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000101225_LG_1_AdditionalIndexMember_11YR"
      id="ixv-21034">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211278"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211279"
      unitRef="usd">9728</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211280"
      unitRef="usd">11177</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211281"
      unitRef="usd">12651</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211282"
      unitRef="usd">13260</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211283"
      unitRef="usd">12095</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211284"
      unitRef="usd">18143</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211285"
      unitRef="usd">19118</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211286"
      unitRef="usd">17714</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211287"
      unitRef="usd">21282</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211288"
      unitRef="usd">22675</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000101225_LG_2_AdditionalIndexMember_11YR"
      id="ixv-21083">&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="C000101225_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211289"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211290"
      unitRef="usd">10178</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211291"
      unitRef="usd">11926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211292"
      unitRef="usd">13595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211293"
      unitRef="usd">14886</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211294"
      unitRef="usd">13847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211295"
      unitRef="usd">21650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211296"
      unitRef="usd">25038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211297"
      unitRef="usd">23103</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211298"
      unitRef="usd">30006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000101225_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211299"
      unitRef="usd">32482</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000101225_ClassMember" id="ixv-21181">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

6.63%

13.28%

8.40%


Fidelity Freedom Index 2055 Composite Index&#x2120;

6.55%


13.39%


8.53%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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="C000101225_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211300"
      unitRef="pure">0.0663</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211301"
      unitRef="pure">0.1328</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-211302"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211303"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211304"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-211305"
      unitRef="pure">0.0853</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211306"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211307"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000101225_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-211308"
      unitRef="pure">0.1250</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000101225_ClassMember" id="ixv-21258">&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="C000101225_ClassMember" id="ixv-21262">&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="C000101225_ClassMember" id="ixv-21268">&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;$&lt;/span&gt;14,977,278,085&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,137,869&lt;/div&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;12&lt;span 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="C000101225_InstantMember"
      decimals="0"
      id="ixv-211309"
      unitRef="usd">14977278085</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000101225_InstantMember"
      decimals="INF"
      id="ixv-211310"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000101225_ClassMember"
      decimals="0"
      id="ixv-211311"
      unitRef="usd">10137869</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000101225_ClassMember"
      decimals="INF"
      id="ixv-211312"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000101225_ClassMember" id="ixv-21343">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000101225_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211313"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000101225_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211314"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000101225_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211315"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000101225_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211316"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000101225_ClassMember" id="ixv-21434">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000101225_TH_0_Member"
      decimals="INF"
      id="ixv-211317"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000101225_TH_1_Member"
      decimals="INF"
      id="ixv-211318"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000101225_TH_2_Member"
      decimals="INF"
      id="ixv-211319"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000101225_TH_3_Member"
      decimals="INF"
      id="ixv-211320"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000101225_TH_4_Member"
      decimals="INF"
      id="ixv-211321"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-21555">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000177880_ClassMember" id="ixv-21559">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000177880_ClassMember" id="ixv-21570">Fidelity Flex&#xae; Freedom Blend 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177880_ClassMember" id="ixv-21573">Fidelity Flex&#xae; Freedom Blend 2060 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177880_ClassMember" id="ixv-21577">FWLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177880_ClassMember" id="ixv-21596">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177880_ClassMember" id="ixv-21598">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177880_ClassMember" id="ixv-21603">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177880_ClassMember" id="ixv-21605">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177880_ClassMember" id="ixv-21608">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177880_ClassMember" id="ixv-21611">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177880_ClassMember" id="ixv-21618">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2060 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177880_ClassMember"
      decimals="0"
      id="ixv-211322"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177880_ClassMember"
      decimals="INF"
      id="ixv-211323"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177880_ClassMember" id="ixv-21670">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177880_ClassMember" id="ixv-21701">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2060 Fund


$10,000

$10,989


$11,269


$10,115


$15,838


$16,447


$15,373


$18,675


$19,774



Fidelity Freedom 2060 Composite Index&#x2120;


$10,000

$10,910


$11,449


$10,443


$15,666


$16,507


$15,295


$18,375


$19,579



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177880_LG_ClassMember_9YR" id="ixv-21720">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2060 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211324"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211325"
      unitRef="usd">10989</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211326"
      unitRef="usd">11269</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211327"
      unitRef="usd">10115</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211328"
      unitRef="usd">15838</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211329"
      unitRef="usd">16447</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211330"
      unitRef="usd">15373</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211331"
      unitRef="usd">18675</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211332"
      unitRef="usd">19774</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177880_LG_1_AdditionalIndexMember_9YR"
      id="ixv-21761">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211333"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211334"
      unitRef="usd">10910</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211335"
      unitRef="usd">11449</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211336"
      unitRef="usd">10443</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211337"
      unitRef="usd">15666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211338"
      unitRef="usd">16507</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211339"
      unitRef="usd">15295</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211340"
      unitRef="usd">18375</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211341"
      unitRef="usd">19579</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177880_LG_2_AdditionalIndexMember_9YR"
      id="ixv-21802">&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="C000177880_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211342"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211343"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211344"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211345"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211346"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211347"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211348"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211349"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177880_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211350"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177880_ClassMember" id="ixv-21886">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2060 Fund

5.88%

14.35%

9.11%


Fidelity Freedom 2060 Composite Index&#x2120;

6.55%


13.39%


8.98%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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="C000177880_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211351"
      unitRef="pure">0.0588</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211352"
      unitRef="pure">0.1435</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211353"
      unitRef="pure">0.0911</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211354"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211355"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211356"
      unitRef="pure">0.0898</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211357"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211358"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177880_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211359"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177880_ClassMember" id="ixv-21955">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177880_ClassMember" id="ixv-21972">&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="C000177880_ClassMember" id="ixv-21976">&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="C000177880_ClassMember" id="ixv-21982">&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;$&lt;/span&gt;20,777,148&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177880_InstantMember"
      decimals="0"
      id="ixv-211360"
      unitRef="usd">20777148</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177880_InstantMember"
      decimals="INF"
      id="ixv-211361"
      unitRef="holding">23</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177880_ClassMember"
      decimals="0"
      id="ixv-211362"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177880_ClassMember"
      decimals="INF"
      id="ixv-211363"
      unitRef="pure">0.41</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177880_ClassMember" id="ixv-22057">
&#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="C000177880_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211364"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211365"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211366"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211367"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177880_ClassMember" id="ixv-22148">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

14.6


&#160;


Fidelity Series Blue Chip Growth Fund

12.0


&#160;


Fidelity Series Emerging Markets Opportunities Fund

10.4


&#160;


Fidelity Series Large Cap Growth Index Fund

7.7


&#160;


Fidelity Series International Growth Fund

7.2


&#160;


Fidelity Series Overseas Fund

7.1


&#160;


Fidelity Series International Value Fund

7.1


&#160;


Fidelity Series Large Cap Stock Fund

7.1


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Value Discovery Fund

5.3


&#160;


&#160;

85.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177880_TH_0_Member"
      decimals="INF"
      id="ixv-211368"
      unitRef="pure">0.146</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_1_Member"
      decimals="INF"
      id="ixv-211369"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_2_Member"
      decimals="INF"
      id="ixv-211370"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_3_Member"
      decimals="INF"
      id="ixv-211371"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_4_Member"
      decimals="INF"
      id="ixv-211372"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_5_Member"
      decimals="INF"
      id="ixv-211373"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_6_Member"
      decimals="INF"
      id="ixv-211374"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_7_Member"
      decimals="INF"
      id="ixv-211375"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_8_Member"
      decimals="INF"
      id="ixv-211376"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177880_TH_9_Member"
      decimals="INF"
      id="ixv-211377"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000177880_ClassMember" id="ixv-22273">
&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;1-800-544-3455&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="C000177880_ClassMember" id="ixv-22279">&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;1-800-544-3455&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="C000177880_ClassMember" id="ixv-22283">&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="C000177880_ClassMember" id="ixv-22286">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000177880_ClassMember" id="ixv-22290">&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="C000177880_ClassMember" id="ixv-22301">&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-22359">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079287_ClassMember" id="ixv-22371">Fidelity Freedom&#xae; Index 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079287_ClassMember" id="ixv-22374">Fidelity Freedom&#xae; Index 2040 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079287_ClassMember" id="ixv-22378">FBIFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079287_ClassMember" id="ixv-22397">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079287_ClassMember" id="ixv-22399">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079287_ClassMember" id="ixv-22404">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="C000079287_ClassMember" id="ixv-22406">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079287_ClassMember" id="ixv-22409">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079287_ClassMember" id="ixv-22412">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079287_ClassMember" id="ixv-22419">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079287_ClassMember"
      decimals="0"
      id="ixv-211378"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079287_ClassMember"
      decimals="INF"
      id="ixv-211379"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079287_ClassMember" id="ixv-22461">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079287_ClassMember" id="ixv-22485">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,709


$11,155


$12,615


$13,190


$12,012


$18,001


$18,883


$17,528


$20,842


$22,202



Fidelity Freedom Index 2040 Composite Index&#x2120;


$10,000

$9,728


$11,177


$12,651


$13,260


$12,095


$18,143


$19,114


$17,702


$21,107


$22,470



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079287_LG_ClassMember_11YR" id="ixv-22504">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-211380"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-211381"
      unitRef="usd">9709</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211382"
      unitRef="usd">11155</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211383"
      unitRef="usd">12615</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211384"
      unitRef="usd">13190</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211385"
      unitRef="usd">12012</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211386"
      unitRef="usd">18001</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211387"
      unitRef="usd">18883</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211388"
      unitRef="usd">17528</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211389"
      unitRef="usd">20842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211390"
      unitRef="usd">22202</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079287_LG_1_AdditionalIndexMember_11YR"
      id="ixv-22553">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211391"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211392"
      unitRef="usd">9728</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211393"
      unitRef="usd">11177</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211394"
      unitRef="usd">12651</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211395"
      unitRef="usd">13260</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211396"
      unitRef="usd">12095</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211397"
      unitRef="usd">18143</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211398"
      unitRef="usd">19114</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211399"
      unitRef="usd">17702</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211400"
      unitRef="usd">21107</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211401"
      unitRef="usd">22470</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079287_LG_2_AdditionalIndexMember_11YR"
      id="ixv-22602">&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="C000079287_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211402"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211403"
      unitRef="usd">10178</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211404"
      unitRef="usd">11926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211405"
      unitRef="usd">13595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211406"
      unitRef="usd">14886</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211407"
      unitRef="usd">13847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211408"
      unitRef="usd">21650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211409"
      unitRef="usd">25038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211410"
      unitRef="usd">23103</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211411"
      unitRef="usd">30006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079287_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211412"
      unitRef="usd">32482</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079287_ClassMember" id="ixv-22700">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

6.53%

13.07%

8.30%


Fidelity Freedom Index 2040 Composite Index&#x2120;

6.46%


13.19%


8.43%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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="C000079287_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211413"
      unitRef="pure">0.0653</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211414"
      unitRef="pure">0.1307</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-211415"
      unitRef="pure">0.0830</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211416"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211417"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-211418"
      unitRef="pure">0.0843</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211419"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211420"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079287_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-211421"
      unitRef="pure">0.1250</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079287_ClassMember" id="ixv-22777">&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="C000079287_ClassMember" id="ixv-22781">&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="C000079287_ClassMember" id="ixv-22787">&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;$&lt;/span&gt;23,680,015,185&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,584,331&lt;/div&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;13&lt;span 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="C000079287_InstantMember"
      decimals="0"
      id="ixv-211422"
      unitRef="usd">23680015185</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000079287_InstantMember"
      decimals="INF"
      id="ixv-211423"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000079287_ClassMember"
      decimals="0"
      id="ixv-211424"
      unitRef="usd">16584331</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000079287_ClassMember"
      decimals="INF"
      id="ixv-211425"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000079287_ClassMember" id="ixv-22862">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

49.6


International Equity Funds

32.8


Bond Funds

17.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 49.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 17.6&#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="C000079287_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211426"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079287_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211427"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079287_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211428"
      unitRef="pure">0.176</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079287_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211429"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000079287_ClassMember" id="ixv-22953">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

49.6


&#160;


Fidelity Series Global ex U.S. Index Fund

32.8


&#160;


Fidelity Series Bond Index Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079287_TH_0_Member"
      decimals="INF"
      id="ixv-211430"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079287_TH_1_Member"
      decimals="INF"
      id="ixv-211431"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079287_TH_2_Member"
      decimals="INF"
      id="ixv-211432"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079287_TH_3_Member"
      decimals="INF"
      id="ixv-211433"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079287_TH_4_Member"
      decimals="INF"
      id="ixv-211434"
      unitRef="pure">0.023</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-23074">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220392_ClassMember" id="ixv-23078">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220392_ClassMember" id="ixv-23089">Fidelity Freedom&#xae; Index 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220392_ClassMember" id="ixv-23092">Fidelity Freedom&#xae; Index 2065 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220392_ClassMember" id="ixv-23096">FVIPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220392_ClassMember" id="ixv-23115">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220392_ClassMember" id="ixv-23117">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220392_ClassMember" id="ixv-23122">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220392_ClassMember" id="ixv-23124">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220392_ClassMember" id="ixv-23127">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220392_ClassMember" id="ixv-23130">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220392_ClassMember" id="ixv-23137">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220392_ClassMember"
      decimals="0"
      id="ixv-211435"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220392_ClassMember"
      decimals="INF"
      id="ixv-211436"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220392_ClassMember" id="ixv-23179">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220392_ClassMember" id="ixv-23203">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,569,456,607


$2,696,985,204


$2,506,542,000


$3,004,021,796


$3,204,848,996



Fidelity Freedom Index 2065 Composite Index&#x2120;


$2,000,000,000

$2,564,930,037


$2,702,697,201


$2,504,186,394


$3,008,574,171


$3,205,600,618



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220392_LG_ClassMember_6YR" id="ixv-23222">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220392_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211437"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211438"
      unitRef="usd">2569456607</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211439"
      unitRef="usd">2696985204</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211440"
      unitRef="usd">2506542000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211441"
      unitRef="usd">3004021796</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211442"
      unitRef="usd">3204848996</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220392_LG_1_AdditionalIndexMember_6YR"
      id="ixv-23251">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220392_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211443"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211444"
      unitRef="usd">2564930037</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211445"
      unitRef="usd">2702697201</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211446"
      unitRef="usd">2504186394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211447"
      unitRef="usd">3008574171</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211448"
      unitRef="usd">3205600618</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220392_LG_2_AdditionalIndexMember_6YR"
      id="ixv-23280">&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="C000220392_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211449"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211450"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211451"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211452"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211453"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220392_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211454"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220392_ClassMember" id="ixv-23343">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.69%

10.39%


Fidelity Freedom Index 2065 Composite Index&#x2120;

6.55%


10.40%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220392_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211455"
      unitRef="pure">0.0669</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220392_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211456"
      unitRef="pure">0.1039</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220392_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211457"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220392_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211458"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220392_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211459"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220392_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211460"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220392_ClassMember" id="ixv-23398">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220392_ClassMember" id="ixv-23415">&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="C000220392_ClassMember" id="ixv-23419">&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="C000220392_ClassMember" id="ixv-23425">&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;$&lt;/span&gt;2,824,283,726&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,688,737&lt;/div&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;9&lt;span 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="C000220392_InstantMember"
      decimals="0"
      id="ixv-211461"
      unitRef="usd">2824283726</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220392_InstantMember"
      decimals="INF"
      id="ixv-211462"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220392_ClassMember"
      decimals="0"
      id="ixv-211463"
      unitRef="usd">1688737</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220392_ClassMember"
      decimals="INF"
      id="ixv-211464"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220392_ClassMember" id="ixv-23500">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000220392_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211465"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220392_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211466"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220392_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211467"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220392_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211468"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220392_ClassMember" id="ixv-23591">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220392_TH_0_Member"
      decimals="INF"
      id="ixv-211469"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220392_TH_1_Member"
      decimals="INF"
      id="ixv-211470"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220392_TH_2_Member"
      decimals="INF"
      id="ixv-211471"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220392_TH_3_Member"
      decimals="INF"
      id="ixv-211472"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220392_TH_4_Member"
      decimals="INF"
      id="ixv-211473"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220392_ClassMember" id="ixv-23666">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;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&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:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220392_ClassMember" id="ixv-23672">&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;1-800-544-3455&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="C000220392_ClassMember" id="ixv-23676">&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="C000220392_ClassMember" id="ixv-23679">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220392_ClassMember" id="ixv-23683">&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="C000220392_ClassMember" id="ixv-23694">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;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&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:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-23764">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157969_ClassMember" id="ixv-23776">Fidelity Freedom&#xae; Index 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157969_ClassMember" id="ixv-23779">Fidelity Freedom&#xae; Index 2060 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157969_ClassMember" id="ixv-23783">FFLEX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157969_ClassMember" id="ixv-23802">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157969_ClassMember" id="ixv-23804">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157969_ClassMember" id="ixv-23809">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="C000157969_ClassMember" id="ixv-23811">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157969_ClassMember" id="ixv-23814">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157969_ClassMember" id="ixv-23817">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157969_ClassMember" id="ixv-23824">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157969_ClassMember"
      decimals="0"
      id="ixv-211474"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157969_ClassMember"
      decimals="INF"
      id="ixv-211475"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157969_ClassMember" id="ixv-23866">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157969_ClassMember" id="ixv-23890">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,747,680


$5,456,670


$6,172,467


$6,459,830


$5,882,856


$8,819,541


$9,257,323


$8,601,533


$10,307,278


$10,998,009



Fidelity Freedom Index 2060 Composite Index&#x2120;


$5,000,000

$4,751,667


$5,459,524


$6,179,499


$6,477,152


$5,908,057


$8,862,422


$9,338,439


$8,652,539


$10,395,314


$11,076,086



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157969_LG_ClassMember_11YR" id="ixv-23909">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-211476"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-211477"
      unitRef="usd">4747680</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211478"
      unitRef="usd">5456670</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211479"
      unitRef="usd">6172467</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211480"
      unitRef="usd">6459830</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211481"
      unitRef="usd">5882856</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211482"
      unitRef="usd">8819541</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211483"
      unitRef="usd">9257323</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211484"
      unitRef="usd">8601533</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211485"
      unitRef="usd">10307278</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211486"
      unitRef="usd">10998009</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157969_LG_1_AdditionalIndexMember_11YR"
      id="ixv-23958">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211487"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211488"
      unitRef="usd">4751667</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211489"
      unitRef="usd">5459524</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211490"
      unitRef="usd">6179499</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211491"
      unitRef="usd">6477152</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211492"
      unitRef="usd">5908057</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211493"
      unitRef="usd">8862422</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211494"
      unitRef="usd">9338439</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211495"
      unitRef="usd">8652539</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211496"
      unitRef="usd">10395314</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211497"
      unitRef="usd">11076086</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157969_LG_2_AdditionalIndexMember_11YR"
      id="ixv-24007">&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="C000157969_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211498"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211499"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211500"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211501"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211502"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211503"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211504"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211505"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211506"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211507"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157969_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211508"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157969_ClassMember" id="ixv-24105">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

6.70%

13.33%

8.40%


Fidelity Freedom Index 2060 Composite Index&#x2120;

6.55%


13.39%


8.48%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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="C000157969_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211509"
      unitRef="pure">0.0670</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211510"
      unitRef="pure">0.1333</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211511"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211512"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211513"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211514"
      unitRef="pure">0.0848</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211515"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211516"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157969_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211517"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157969_ClassMember" id="ixv-24174">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157969_ClassMember" id="ixv-24191">&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="C000157969_ClassMember" id="ixv-24195">&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="C000157969_ClassMember" id="ixv-24201">&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;$&lt;/span&gt;8,623,848,580&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,700,606&lt;/div&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;11&lt;span 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="C000157969_InstantMember"
      decimals="0"
      id="ixv-211518"
      unitRef="usd">8623848580</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157969_InstantMember"
      decimals="INF"
      id="ixv-211519"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157969_ClassMember"
      decimals="0"
      id="ixv-211520"
      unitRef="usd">5700606</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157969_ClassMember"
      decimals="INF"
      id="ixv-211521"
      unitRef="pure">0.11</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157969_ClassMember" id="ixv-24276">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000157969_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211522"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157969_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211523"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157969_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211524"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157969_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211525"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157969_ClassMember" id="ixv-24367">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157969_TH_0_Member"
      decimals="INF"
      id="ixv-211526"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157969_TH_1_Member"
      decimals="INF"
      id="ixv-211527"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157969_TH_2_Member"
      decimals="INF"
      id="ixv-211528"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157969_TH_3_Member"
      decimals="INF"
      id="ixv-211529"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157969_TH_4_Member"
      decimals="INF"
      id="ixv-211530"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-24488">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000212331_ClassMember" id="ixv-24492">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000212331_ClassMember" id="ixv-24503">Fidelity Freedom&#xae; Index 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000212331_ClassMember" id="ixv-24506">Fidelity Freedom&#xae; Index 2065 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000212331_ClassMember" id="ixv-24510">FFIJX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000212331_ClassMember" id="ixv-24529">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000212331_ClassMember" id="ixv-24531">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000212331_ClassMember" id="ixv-24536">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="C000212331_ClassMember" id="ixv-24538">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000212331_ClassMember" id="ixv-24541">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000212331_ClassMember" id="ixv-24544">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000212331_ClassMember" id="ixv-24551">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000212331_ClassMember"
      decimals="0"
      id="ixv-211531"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000212331_ClassMember"
      decimals="INF"
      id="ixv-211532"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000212331_ClassMember" id="ixv-24593">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000212331_ClassMember" id="ixv-24617">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2019 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$8,776


$13,153


$13,794


$12,812


$15,358


$16,363



Fidelity Freedom Index 2065 Composite Index&#x2120;


$10,000

$8,783


$13,174


$13,882


$12,862


$15,453


$16,465



S&amp;P 500&#xae; Index


$10,000

$8,918


$13,944


$16,126


$14,879


$19,326


$20,920



&#160;

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000212331_LG_ClassMember_7YR" id="ixv-24636">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000212331_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211533"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211534"
      unitRef="usd">8776</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211535"
      unitRef="usd">13153</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211536"
      unitRef="usd">13794</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211537"
      unitRef="usd">12812</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211538"
      unitRef="usd">15358</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211539"
      unitRef="usd">16363</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000212331_LG_1_AdditionalIndexMember_7YR"
      id="ixv-24669">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000212331_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211540"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211541"
      unitRef="usd">8783</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211542"
      unitRef="usd">13174</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211543"
      unitRef="usd">13882</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211544"
      unitRef="usd">12862</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211545"
      unitRef="usd">15453</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211546"
      unitRef="usd">16465</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000212331_LG_2_AdditionalIndexMember_7YR"
      id="ixv-24702">&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="C000212331_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211547"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211548"
      unitRef="usd">8918</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211549"
      unitRef="usd">13944</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211550"
      unitRef="usd">16126</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211551"
      unitRef="usd">14879</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211552"
      unitRef="usd">19326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212331_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211553"
      unitRef="usd">20920</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000212331_ClassMember" id="ixv-24772">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Investor Class

6.54%

13.27%

8.94%


Fidelity Freedom Index 2065 Composite Index&#x2120;

6.55%


13.39%


9.06%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.70%




A&#160; &#160;From June 28, 2019

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="C000212331_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211554"
      unitRef="pure">0.0654</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211555"
      unitRef="pure">0.1327</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211556"
      unitRef="pure">0.0894</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211557"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211558"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211559"
      unitRef="pure">0.0906</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211560"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211561"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212331_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211562"
      unitRef="pure">0.1370</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000212331_ClassMember" id="ixv-24841">2019-06-28</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000212331_ClassMember" id="ixv-24858">&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="C000212331_ClassMember" id="ixv-24862">&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="C000212331_ClassMember" id="ixv-24868">&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;$&lt;/span&gt;2,824,283,726&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,688,737&lt;/div&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;9&lt;span 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="C000212331_InstantMember"
      decimals="0"
      id="ixv-211563"
      unitRef="usd">2824283726</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000212331_InstantMember"
      decimals="INF"
      id="ixv-211564"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000212331_ClassMember"
      decimals="0"
      id="ixv-211565"
      unitRef="usd">1688737</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000212331_ClassMember"
      decimals="INF"
      id="ixv-211566"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000212331_ClassMember" id="ixv-24943">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000212331_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211567"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212331_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211568"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212331_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211569"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212331_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211570"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000212331_ClassMember" id="ixv-25034">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000212331_TH_0_Member"
      decimals="INF"
      id="ixv-211571"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212331_TH_1_Member"
      decimals="INF"
      id="ixv-211572"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212331_TH_2_Member"
      decimals="INF"
      id="ixv-211573"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212331_TH_3_Member"
      decimals="INF"
      id="ixv-211574"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212331_TH_4_Member"
      decimals="INF"
      id="ixv-211575"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000212331_ClassMember" id="ixv-25109">
&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&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;/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="C000212331_ClassMember" id="ixv-25115">&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="C000212331_ClassMember" id="ixv-25119">&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="C000212331_ClassMember" id="ixv-25122">&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="C000212331_ClassMember" id="ixv-25126">&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="C000212331_ClassMember" id="ixv-25137">&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&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;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-25198">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250739_ClassMember" id="ixv-25210">Fidelity Freedom&#xae; Index 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250739_ClassMember" id="ixv-25213">Fidelity Freedom&#xae; &#160;Index 2070 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250739_ClassMember" id="ixv-25218">FRBWX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250739_ClassMember" id="ixv-25237">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250739_ClassMember" id="ixv-25239">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250739_ClassMember" id="ixv-25244">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250739_ClassMember" id="ixv-25246">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250739_ClassMember" id="ixv-25249">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250739_ClassMember" id="ixv-25252">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250739_ClassMember" id="ixv-25259">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;4&lt;span style="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;0.05&lt;span 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="C000250739_ClassMember"
      decimals="0"
      id="ixv-211576"
      unitRef="usd">4</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250739_ClassMember"
      decimals="INF"
      id="ixv-211577"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250739_ClassMember" id="ixv-25302">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250739_ClassMember" id="ixv-25308">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000250739_ClassMember" id="ixv-25332">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,092,688,803



Fidelity Freedom Index 2070 Composite Index&#x2120;


$2,000,000,000

$2,088,293,194



S&amp;P 500&#xae; Index


$2,000,000,000

$2,076,098,185



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250739_LG_ClassMember_2YR" id="ixv-25351">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250739_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211578"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250739_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211579"
      unitRef="usd">2092688803</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250739_LG_1_AdditionalIndexMember_2YR"
      id="ixv-25364">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2070 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250739_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211580"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250739_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211581"
      unitRef="usd">2088293194</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250739_LG_2_AdditionalIndexMember_2YR"
      id="ixv-25377">&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="C000250739_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211582"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250739_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211583"
      unitRef="usd">2076098185</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250739_ClassMember" id="ixv-25412">&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;$&lt;/span&gt;49,873,888&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,824&lt;/div&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;9&lt;span 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="C000250739_InstantMember"
      decimals="0"
      id="ixv-211584"
      unitRef="usd">49873888</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250739_InstantMember"
      decimals="INF"
      id="ixv-211585"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250739_ClassMember"
      decimals="0"
      id="ixv-211586"
      unitRef="usd">8824</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250739_ClassMember"
      decimals="INF"
      id="ixv-211587"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250739_ClassMember" id="ixv-25487">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000250739_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211588"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250739_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211589"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250739_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211590"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250739_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211591"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250739_ClassMember" id="ixv-25578">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250739_TH_0_Member"
      decimals="INF"
      id="ixv-211592"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250739_TH_1_Member"
      decimals="INF"
      id="ixv-211593"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250739_TH_2_Member"
      decimals="INF"
      id="ixv-211594"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250739_TH_3_Member"
      decimals="INF"
      id="ixv-211595"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250739_TH_4_Member"
      decimals="INF"
      id="ixv-211596"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-25699">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079281_ClassMember" id="ixv-25711">Fidelity Freedom&#xae; Index 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079281_ClassMember" id="ixv-25714">Fidelity Freedom&#xae; Index 2010 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079281_ClassMember" id="ixv-25718">FKIFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079281_ClassMember" id="ixv-25737">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079281_ClassMember" id="ixv-25739">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079281_ClassMember" id="ixv-25744">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="C000079281_ClassMember" id="ixv-25746">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079281_ClassMember" id="ixv-25749">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079281_ClassMember" id="ixv-25752">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079281_ClassMember" id="ixv-25759">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079281_ClassMember"
      decimals="0"
      id="ixv-211597"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079281_ClassMember"
      decimals="INF"
      id="ixv-211598"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079281_ClassMember" id="ixv-25801">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079281_ClassMember" id="ixv-25825">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,928


$10,647


$11,352


$11,855


$12,014


$14,062


$14,108


$13,421


$14,417


$15,226



Fidelity Freedom Index 2010 Composite Index&#x2120;


$10,000

$9,935


$10,668


$11,389


$11,911


$12,079


$14,177


$14,257


$13,565


$14,595


$15,418



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,196


$10,241


$10,364


$10,829


$11,796


$11,880


$11,386


$10,842


$11,026


$11,564



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079281_LG_ClassMember_11YR" id="ixv-25844">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-211599"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-211600"
      unitRef="usd">9928</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211601"
      unitRef="usd">10647</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211602"
      unitRef="usd">11352</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211603"
      unitRef="usd">11855</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211604"
      unitRef="usd">12014</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211605"
      unitRef="usd">14062</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211606"
      unitRef="usd">14108</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211607"
      unitRef="usd">13421</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211608"
      unitRef="usd">14417</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211609"
      unitRef="usd">15226</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079281_LG_1_AdditionalIndexMember_11YR"
      id="ixv-25893">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211610"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211611"
      unitRef="usd">9935</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211612"
      unitRef="usd">10668</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211613"
      unitRef="usd">11389</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211614"
      unitRef="usd">11911</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211615"
      unitRef="usd">12079</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211616"
      unitRef="usd">14177</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211617"
      unitRef="usd">14257</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211618"
      unitRef="usd">13565</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211619"
      unitRef="usd">14595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211620"
      unitRef="usd">15418</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079281_LG_2_AdditionalIndexMember_11YR"
      id="ixv-25942">&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="C000079281_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211621"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211622"
      unitRef="usd">10196</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211623"
      unitRef="usd">10241</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211624"
      unitRef="usd">10364</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211625"
      unitRef="usd">10829</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211626"
      unitRef="usd">11796</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211627"
      unitRef="usd">11880</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211628"
      unitRef="usd">11386</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211629"
      unitRef="usd">10842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211630"
      unitRef="usd">11026</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079281_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211631"
      unitRef="usd">11564</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079281_ClassMember" id="ixv-26040">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

5.61%

4.85%

4.29%


Fidelity Freedom Index 2010 Composite Index&#x2120;

5.64%


5.00%


4.42%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.46%




&#160;
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="C000079281_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211632"
      unitRef="pure">0.0561</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211633"
      unitRef="pure">0.0485</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-211634"
      unitRef="pure">0.0429</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211635"
      unitRef="pure">0.0564</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211636"
      unitRef="pure">0.0500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-211637"
      unitRef="pure">0.0442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211638"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211639"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079281_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-211640"
      unitRef="pure">0.0146</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079281_ClassMember" id="ixv-26118">&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="C000079281_ClassMember" id="ixv-26122">&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="C000079281_ClassMember" id="ixv-26128">&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;$&lt;/span&gt;715,752,160&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;601,571&lt;/div&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;17&lt;span 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="C000079281_InstantMember"
      decimals="0"
      id="ixv-211641"
      unitRef="usd">715752160</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000079281_InstantMember"
      decimals="INF"
      id="ixv-211642"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000079281_ClassMember"
      decimals="0"
      id="ixv-211643"
      unitRef="usd">601571</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000079281_ClassMember"
      decimals="INF"
      id="ixv-211644"
      unitRef="pure">0.17</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000079281_ClassMember" id="ixv-26203">
&#160;
&#160;
&#160;
&#160;
Bond Funds

66.4


Domestic Equity Funds

15.2


International Equity Funds

10.1


Short-Term Funds

8.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 66.4&#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 - 15.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 10.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 8.3&#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-211645"
      unitRef="pure">0.664</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211646"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211647"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-211648"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211649"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000079281_ClassMember" id="ixv-26307">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

40.5


&#160;


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

16.0


&#160;


Fidelity Series Total Market Index Fund

15.2


&#160;


Fidelity Series Global ex U.S. Index Fund

10.1


&#160;


Fidelity Series Treasury Bill Index Fund

8.3


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.8


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079281_TH_0_Member"
      decimals="INF"
      id="ixv-211650"
      unitRef="pure">0.405</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_TH_1_Member"
      decimals="INF"
      id="ixv-211651"
      unitRef="pure">0.160</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_TH_2_Member"
      decimals="INF"
      id="ixv-211652"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_TH_3_Member"
      decimals="INF"
      id="ixv-211653"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_TH_4_Member"
      decimals="INF"
      id="ixv-211654"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_TH_5_Member"
      decimals="INF"
      id="ixv-211655"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_TH_6_Member"
      decimals="INF"
      id="ixv-211656"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079281_TH_7_Member"
      decimals="INF"
      id="ixv-211657"
      unitRef="pure">0.018</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-26458">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079282_ClassMember" id="ixv-26470">Fidelity Freedom&#xae; Index 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079282_ClassMember" id="ixv-26473">Fidelity Freedom&#xae; Index 2015 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079282_ClassMember" id="ixv-26477">FLIFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079282_ClassMember" id="ixv-26496">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079282_ClassMember" id="ixv-26498">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079282_ClassMember" id="ixv-26503">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="C000079282_ClassMember" id="ixv-26505">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079282_ClassMember" id="ixv-26508">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079282_ClassMember" id="ixv-26511">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079282_ClassMember" id="ixv-26518">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079282_ClassMember"
      decimals="0"
      id="ixv-211658"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079282_ClassMember"
      decimals="INF"
      id="ixv-211659"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079282_ClassMember" id="ixv-26560">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079282_ClassMember" id="ixv-26584">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,890


$10,751


$11,592


$12,120


$12,099


$14,751


$14,879


$14,042


$15,293


$16,171



Fidelity Freedom Index 2015 Composite Index&#x2120;


$10,000

$9,902


$10,775


$11,635


$12,185


$12,167


$14,873


$15,045


$14,194


$15,492


$16,376



Bloomberg U.S. Aggregate Bond Index


$10,000

$10,196


$10,241


$10,364


$10,829


$11,796


$11,880


$11,386


$10,842


$11,026


$11,564



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079282_LG_ClassMember_11YR" id="ixv-26603">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-211660"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-211661"
      unitRef="usd">9890</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211662"
      unitRef="usd">10751</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211663"
      unitRef="usd">11592</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211664"
      unitRef="usd">12120</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211665"
      unitRef="usd">12099</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211666"
      unitRef="usd">14751</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211667"
      unitRef="usd">14879</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211668"
      unitRef="usd">14042</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211669"
      unitRef="usd">15293</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211670"
      unitRef="usd">16171</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079282_LG_1_AdditionalIndexMember_11YR"
      id="ixv-26652">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211671"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211672"
      unitRef="usd">9902</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211673"
      unitRef="usd">10775</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211674"
      unitRef="usd">11635</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211675"
      unitRef="usd">12185</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211676"
      unitRef="usd">12167</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211677"
      unitRef="usd">14873</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211678"
      unitRef="usd">15045</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211679"
      unitRef="usd">14194</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211680"
      unitRef="usd">15492</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211681"
      unitRef="usd">16376</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079282_LG_2_AdditionalIndexMember_11YR"
      id="ixv-26701">&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="C000079282_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211682"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-211683"
      unitRef="usd">10196</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211684"
      unitRef="usd">10241</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211685"
      unitRef="usd">10364</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211686"
      unitRef="usd">10829</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211687"
      unitRef="usd">11796</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211688"
      unitRef="usd">11880</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211689"
      unitRef="usd">11386</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211690"
      unitRef="usd">10842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211691"
      unitRef="usd">11026</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079282_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211692"
      unitRef="usd">11564</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079282_ClassMember" id="ixv-26799">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

5.74%

5.97%

4.92%


Fidelity Freedom Index 2015 Composite Index&#x2120;

5.70%


6.12%


5.06%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.46%




&#160;
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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      unitRef="pure">0.0574</oef:AvgAnnlRtrPct>
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      id="ixv-211694"
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    <oef:AvgAnnlRtrPct
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      id="ixv-211695"
      unitRef="pure">0.0492</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      id="ixv-211696"
      unitRef="pure">0.0570</oef:AvgAnnlRtrPct>
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      id="ixv-211697"
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      id="ixv-211698"
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      id="ixv-211699"
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      id="ixv-211700"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      id="ixv-211701"
      unitRef="pure">0.0146</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079282_ClassMember" id="ixv-26877">&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="C000079282_ClassMember" id="ixv-26881">&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="C000079282_ClassMember" id="ixv-26887">&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;$&lt;/span&gt;1,926,973,408&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,595,575&lt;/div&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>
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    <us-gaap:InvestmentCompanyPortfolioTurnover
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    <oef:HoldingsTableTextBlock contextRef="C000079282_ClassMember" id="ixv-26962">
&#160;
&#160;
&#160;
&#160;
Bond Funds

60.1


Domestic Equity Funds

20.7


International Equity Funds

13.7


Short-Term Funds

5.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 60.1&#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 - 20.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 5.5&#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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      id="ixv-211706"
      unitRef="pure">0.601</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079282_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211707"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079282_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211708"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079282_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-211709"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
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      id="ixv-211710"
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    <oef:LargestHoldingsTableTextBlock contextRef="C000079282_ClassMember" id="ixv-27066">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

36.9


&#160;


Fidelity Series Total Market Index Fund

20.7


&#160;


Fidelity Series Global ex U.S. Index Fund

13.7


&#160;


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

10.4


&#160;


Fidelity Series Treasury Bill Index Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

4.4


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
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    <oef:PctOfNav
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      decimals="INF"
      id="ixv-211712"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
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      id="ixv-211713"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
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      id="ixv-211715"
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    <oef:PctOfNav
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      id="ixv-211716"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-211717"
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    <oef:PctOfNav
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      id="ixv-211718"
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    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-27217">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252917_ClassMember" id="ixv-27229">Fidelity Freedom&#xae; Index 2020 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252917_ClassMember" id="ixv-27232">Fidelity Freedom&#xae; Index 2020 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252917_ClassMember" id="ixv-27236">FATYX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252917_ClassMember" id="ixv-27255">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2020 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252917_ClassMember" id="ixv-27257">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252917_ClassMember" id="ixv-27262">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252917_ClassMember" id="ixv-27264">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252917_ClassMember" id="ixv-27267">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252917_ClassMember" id="ixv-27270">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252917_ClassMember" id="ixv-27277">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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
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      decimals="0"
      id="ixv-211719"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
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      id="ixv-211720"
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    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252917_ClassMember" id="ixv-27320">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252917_ClassMember" id="ixv-27326">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252917_ClassMember" id="ixv-27350">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,066,628,375



Fidelity Freedom Index 2020 Composite Index&#x2120;


$5,000,000,000

$5,059,830,965



Bloomberg U.S. Aggregate Bond Index


$5,000,000,000

$5,042,673,521



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252917_LG_ClassMember_2YR" id="ixv-27369">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252917_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211721"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252917_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211722"
      unitRef="usd">5066628375</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252917_LG_1_AdditionalIndexMember_2YR"
      id="ixv-27382">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2020 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252917_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211723"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252917_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211724"
      unitRef="usd">5059830965</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252917_LG_2_AdditionalIndexMember_2YR"
      id="ixv-27395">&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="C000252917_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211725"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252917_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211726"
      unitRef="usd">5042673521</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252917_ClassMember" id="ixv-27430">&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;$&lt;/span&gt;6,702,986,914&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,494,444&lt;/div&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;13&lt;span 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="C000252917_InstantMember"
      decimals="0"
      id="ixv-211727"
      unitRef="usd">6702986914</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252917_InstantMember"
      decimals="INF"
      id="ixv-211728"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252917_ClassMember"
      decimals="0"
      id="ixv-211729"
      unitRef="usd">5494444</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252917_ClassMember"
      decimals="INF"
      id="ixv-211730"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252917_ClassMember" id="ixv-27505">
&#160;
&#160;
&#160;
&#160;
Bond Funds

53.7


Domestic Equity Funds

26.3


International Equity Funds

17.4


Short-Term Funds

2.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 53.7&#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 - 26.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 17.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 2.6&#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="C000252917_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211731"
      unitRef="pure">0.537</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211732"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211733"
      unitRef="pure">0.174</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-211734"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211735"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252917_ClassMember" id="ixv-27609">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

33.4


&#160;


Fidelity Series Total Market Index Fund

26.3


&#160;


Fidelity Series Global ex U.S. Index Fund

17.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

7.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


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

4.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.6


&#160;


Fidelity Series Treasury Bill Index Fund

2.6


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252917_TH_0_Member"
      decimals="INF"
      id="ixv-211736"
      unitRef="pure">0.334</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_TH_1_Member"
      decimals="INF"
      id="ixv-211737"
      unitRef="pure">0.263</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_TH_2_Member"
      decimals="INF"
      id="ixv-211738"
      unitRef="pure">0.174</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_TH_3_Member"
      decimals="INF"
      id="ixv-211739"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_TH_4_Member"
      decimals="INF"
      id="ixv-211740"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_TH_5_Member"
      decimals="INF"
      id="ixv-211741"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_TH_6_Member"
      decimals="INF"
      id="ixv-211742"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252917_TH_7_Member"
      decimals="INF"
      id="ixv-211743"
      unitRef="pure">0.026</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-27760">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220391_ClassMember" id="ixv-27764">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220391_ClassMember" id="ixv-27775">Fidelity Freedom&#xae; Index 2060 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220391_ClassMember" id="ixv-27778">Fidelity Freedom&#xae; Index 2060 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220391_ClassMember" id="ixv-27782">FUIPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220391_ClassMember" id="ixv-27801">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2060 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220391_ClassMember" id="ixv-27803">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220391_ClassMember" id="ixv-27808">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220391_ClassMember" id="ixv-27810">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220391_ClassMember" id="ixv-27813">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220391_ClassMember" id="ixv-27816">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220391_ClassMember" id="ixv-27823">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220391_ClassMember"
      decimals="0"
      id="ixv-211744"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220391_ClassMember"
      decimals="INF"
      id="ixv-211745"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220391_ClassMember" id="ixv-27865">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220391_ClassMember" id="ixv-27889">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,570,441,371


$2,696,617,493


$2,506,116,704


$3,005,402,730


$3,205,830,164



Fidelity Freedom Index 2060 Composite Index&#x2120;


$2,000,000,000

$2,564,930,037


$2,702,697,201


$2,504,186,394


$3,008,574,171


$3,205,600,618



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220391_LG_ClassMember_6YR" id="ixv-27908">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220391_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211746"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211747"
      unitRef="usd">2570441371</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211748"
      unitRef="usd">2696617493</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211749"
      unitRef="usd">2506116704</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211750"
      unitRef="usd">3005402730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211751"
      unitRef="usd">3205830164</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220391_LG_1_AdditionalIndexMember_6YR"
      id="ixv-27937">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2060 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220391_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211752"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211753"
      unitRef="usd">2564930037</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211754"
      unitRef="usd">2702697201</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211755"
      unitRef="usd">2504186394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211756"
      unitRef="usd">3008574171</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211757"
      unitRef="usd">3205600618</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220391_LG_2_AdditionalIndexMember_6YR"
      id="ixv-27966">&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="C000220391_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211758"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211759"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211760"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211761"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211762"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220391_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211763"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220391_ClassMember" id="ixv-28029">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.67%

10.40%


Fidelity Freedom Index 2060 Composite Index&#x2120;

6.55%


10.40%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220391_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211764"
      unitRef="pure">0.0667</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220391_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211765"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220391_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211766"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220391_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211767"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220391_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211768"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220391_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211769"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220391_ClassMember" id="ixv-28084">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220391_ClassMember" id="ixv-28101">&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="C000220391_ClassMember" id="ixv-28105">&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="C000220391_ClassMember" id="ixv-28111">&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;$&lt;/span&gt;8,623,848,580&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;5,700,606&lt;/div&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;11&lt;span 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="C000220391_InstantMember"
      decimals="0"
      id="ixv-211770"
      unitRef="usd">8623848580</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220391_InstantMember"
      decimals="INF"
      id="ixv-211771"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220391_ClassMember"
      decimals="0"
      id="ixv-211772"
      unitRef="usd">5700606</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220391_ClassMember"
      decimals="INF"
      id="ixv-211773"
      unitRef="pure">0.11</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220391_ClassMember" id="ixv-28186">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000220391_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211774"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220391_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211775"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220391_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211776"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220391_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211777"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220391_ClassMember" id="ixv-28277">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220391_TH_0_Member"
      decimals="INF"
      id="ixv-211778"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220391_TH_1_Member"
      decimals="INF"
      id="ixv-211779"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220391_TH_2_Member"
      decimals="INF"
      id="ixv-211780"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220391_TH_3_Member"
      decimals="INF"
      id="ixv-211781"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220391_TH_4_Member"
      decimals="INF"
      id="ixv-211782"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220391_ClassMember" id="ixv-28352">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220391_ClassMember" id="ixv-28358">&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;1-800-544-3455&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="C000220391_ClassMember" id="ixv-28362">&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="C000220391_ClassMember" id="ixv-28365">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220391_ClassMember" id="ixv-28369">&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="C000220391_ClassMember" id="ixv-28380">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-28445">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157962_ClassMember" id="ixv-28457">Fidelity Freedom&#xae; Index 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157962_ClassMember" id="ixv-28460">Fidelity Freedom&#xae; Index 2015 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157962_ClassMember" id="ixv-28464">FIWFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157962_ClassMember" id="ixv-28483">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2015 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157962_ClassMember" id="ixv-28485">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157962_ClassMember" id="ixv-28490">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="C000157962_ClassMember" id="ixv-28492">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157962_ClassMember" id="ixv-28495">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157962_ClassMember" id="ixv-28498">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157962_ClassMember" id="ixv-28505">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157962_ClassMember"
      decimals="0"
      id="ixv-211783"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157962_ClassMember"
      decimals="INF"
      id="ixv-211784"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157962_ClassMember" id="ixv-28547">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157962_ClassMember" id="ixv-28571">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,898,470


$5,329,024


$5,752,371


$6,014,227


$6,005,488


$7,325,643


$7,395,610


$6,982,694


$7,608,525


$8,042,829



Fidelity Freedom Index 2015 Composite Index&#x2120;


$5,000,000

$4,902,973


$5,335,626


$5,761,201


$6,033,550


$6,024,838


$7,364,344


$7,449,664


$7,028,380


$7,671,239


$8,108,713



Bloomberg U.S. Aggregate Bond Index


$5,000,000

$5,192,697


$5,215,571


$5,278,300


$5,514,810


$6,007,488


$6,050,158


$5,798,950


$5,521,569


$5,615,321


$5,889,326



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157962_LG_ClassMember_11YR" id="ixv-28590">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-211785"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-211786"
      unitRef="usd">4898470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211787"
      unitRef="usd">5329024</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211788"
      unitRef="usd">5752371</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2019"
      decimals="0"
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      contextRef="C000157962_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211790"
      unitRef="usd">6005488</oef:AccmVal>
    <oef:AccmVal
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      unitRef="usd">7325643</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211792"
      unitRef="usd">7395610</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211793"
      unitRef="usd">6982694</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2024"
      decimals="0"
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      unitRef="usd">7608525</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_ClassMember_AsOf_2025"
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      unitRef="usd">8042829</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157962_LG_1_AdditionalIndexMember_11YR"
      id="ixv-28639">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
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      decimals="0"
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      unitRef="usd">5000000</oef:AccmVal>
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    <oef:AccmVal
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      unitRef="usd">5335626</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_1_AdditionalIndexMember_AsOf_2018"
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      unitRef="usd">5761201</oef:AccmVal>
    <oef:AccmVal
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      unitRef="usd">6033550</oef:AccmVal>
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      contextRef="C000157962_1_AdditionalIndexMember_AsOf_2020"
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      id="ixv-211801"
      unitRef="usd">6024838</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_1_AdditionalIndexMember_AsOf_2021"
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      id="ixv-211802"
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    <oef:AccmVal
      contextRef="C000157962_1_AdditionalIndexMember_AsOf_2022"
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    <oef:AccmVal
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      id="ixv-211804"
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      id="ixv-211805"
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    <oef:AccmVal
      contextRef="C000157962_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211806"
      unitRef="usd">8108713</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157962_LG_2_AdditionalIndexMember_11YR"
      id="ixv-28688">&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="C000157962_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-211807"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
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      decimals="0"
      id="ixv-211808"
      unitRef="usd">5192697</oef:AccmVal>
    <oef:AccmVal
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      id="ixv-211809"
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    <oef:AccmVal
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      decimals="0"
      id="ixv-211810"
      unitRef="usd">5278300</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157962_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211811"
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      contextRef="C000157962_2_AdditionalIndexMember_AsOf_2020"
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      id="ixv-211812"
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      contextRef="C000157962_2_AdditionalIndexMember_AsOf_2021"
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      id="ixv-211814"
      unitRef="usd">5798950</oef:AccmVal>
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      id="ixv-211815"
      unitRef="usd">5521569</oef:AccmVal>
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      unitRef="usd">5615321</oef:AccmVal>
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      unitRef="usd">5889326</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157962_ClassMember" id="ixv-28786">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

5.71%

6.02%

4.98%


Fidelity Freedom Index 2015 Composite Index&#x2120;

5.70%


6.12%


5.07%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.69%




A&#160; &#160;From June 24, 2015

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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      id="ixv-211818"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
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      contextRef="C000157962_NoLoadClassMember_5YR"
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      id="ixv-211819"
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      id="ixv-211821"
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      id="ixv-211822"
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      id="ixv-211823"
      unitRef="pure">0.0507</oef:AvgAnnlRtrPct>
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      id="ixv-211824"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="INF"
      id="ixv-211825"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      id="ixv-211826"
      unitRef="pure">0.0169</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157962_ClassMember" id="ixv-28856">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157962_ClassMember" id="ixv-28873">&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="C000157962_ClassMember" id="ixv-28877">&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="C000157962_ClassMember" id="ixv-28883">&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;$&lt;/span&gt;1,926,973,408&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,595,575&lt;/div&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="C000157962_InstantMember"
      decimals="0"
      id="ixv-211827"
      unitRef="usd">1926973408</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157962_InstantMember"
      decimals="INF"
      id="ixv-211828"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157962_ClassMember"
      decimals="0"
      id="ixv-211829"
      unitRef="usd">1595575</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157962_ClassMember"
      decimals="INF"
      id="ixv-211830"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157962_ClassMember" id="ixv-28958">
&#160;
&#160;
&#160;
&#160;
Bond Funds

60.1


Domestic Equity Funds

20.7


International Equity Funds

13.7


Short-Term Funds

5.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 60.1&#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 - 20.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 5.5&#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-211831"
      unitRef="pure">0.601</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211832"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211833"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-211834"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-211835"
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    <oef:LargestHoldingsTableTextBlock contextRef="C000157962_ClassMember" id="ixv-29062">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

36.9


&#160;


Fidelity Series Total Market Index Fund

20.7


&#160;


Fidelity Series Global ex U.S. Index Fund

13.7


&#160;


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

10.4


&#160;


Fidelity Series Treasury Bill Index Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

4.4


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157962_TH_0_Member"
      decimals="INF"
      id="ixv-211836"
      unitRef="pure">0.369</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_TH_1_Member"
      decimals="INF"
      id="ixv-211837"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_TH_2_Member"
      decimals="INF"
      id="ixv-211838"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_TH_3_Member"
      decimals="INF"
      id="ixv-211839"
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      decimals="INF"
      id="ixv-211840"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_TH_5_Member"
      decimals="INF"
      id="ixv-211841"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_TH_6_Member"
      decimals="INF"
      id="ixv-211842"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157962_TH_7_Member"
      decimals="INF"
      id="ixv-211843"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-29213">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177886_ClassMember" id="ixv-29225">Fidelity Flex&#xae; Freedom Blend 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177886_ClassMember" id="ixv-29228">Fidelity Flex&#xae; Freedom Blend 2030 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177886_ClassMember" id="ixv-29232">FVLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177886_ClassMember" id="ixv-29251">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177886_ClassMember" id="ixv-29253">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177886_ClassMember" id="ixv-29258">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177886_ClassMember" id="ixv-29260">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177886_ClassMember" id="ixv-29263">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177886_ClassMember" id="ixv-29266">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177886_ClassMember" id="ixv-29273">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2030 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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
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      decimals="0"
      id="ixv-211844"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177886_ClassMember"
      decimals="INF"
      id="ixv-211845"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177886_ClassMember" id="ixv-29325">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177886_ClassMember" id="ixv-29356">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2030 Fund


$10,000

$10,863


$11,199


$10,541


$14,853


$15,131


$14,173


$16,226


$17,151



Fidelity Freedom 2030 Composite Index&#x2120;


$10,000

$10,773


$11,323


$10,836


$14,692


$15,114


$14,091


$16,015


$16,962



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177886_LG_ClassMember_9YR" id="ixv-29375">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2030 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211846"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211847"
      unitRef="usd">10863</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211848"
      unitRef="usd">11199</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211849"
      unitRef="usd">10541</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211850"
      unitRef="usd">14853</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211851"
      unitRef="usd">15131</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211852"
      unitRef="usd">14173</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211853"
      unitRef="usd">16226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211854"
      unitRef="usd">17151</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177886_LG_1_AdditionalIndexMember_9YR"
      id="ixv-29416">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211855"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211856"
      unitRef="usd">10773</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211857"
      unitRef="usd">11323</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211858"
      unitRef="usd">10836</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211859"
      unitRef="usd">14692</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211860"
      unitRef="usd">15114</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211861"
      unitRef="usd">14091</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211862"
      unitRef="usd">16015</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211863"
      unitRef="usd">16962</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177886_LG_2_AdditionalIndexMember_9YR"
      id="ixv-29457">&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="C000177886_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211864"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211865"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211866"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211867"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211868"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211869"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211870"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211871"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177886_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211872"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177886_ClassMember" id="ixv-29541">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2030 Fund

5.70%

10.23%

7.15%


Fidelity Freedom 2030 Composite Index&#x2120;

5.91%


9.38%


6.99%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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="C000177886_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-211873"
      unitRef="pure">0.0570</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-211874"
      unitRef="pure">0.1023</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-211875"
      unitRef="pure">0.0715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-211876"
      unitRef="pure">0.0591</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-211877"
      unitRef="pure">0.0938</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-211878"
      unitRef="pure">0.0699</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-211879"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-211880"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177886_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-211881"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177886_ClassMember" id="ixv-29610">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177886_ClassMember" id="ixv-29627">&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="C000177886_ClassMember" id="ixv-29631">&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="C000177886_ClassMember" id="ixv-29637">&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;$&lt;/span&gt;74,075,405&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;30&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177886_InstantMember"
      decimals="0"
      id="ixv-211882"
      unitRef="usd">74075405</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177886_InstantMember"
      decimals="INF"
      id="ixv-211883"
      unitRef="holding">30</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177886_ClassMember"
      decimals="0"
      id="ixv-211884"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177886_ClassMember"
      decimals="INF"
      id="ixv-211885"
      unitRef="pure">0.35</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177886_ClassMember" id="ixv-29712">
&#160;
&#160;
&#160;
&#160;
Bond Funds

38.5


Domestic Equity Funds

32.8


International Equity Funds

28.7


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 - 32.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 28.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177886_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211886"
      unitRef="pure">0.385</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211887"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211888"
      unitRef="pure">0.287</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211889"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177886_ClassMember" id="ixv-29803">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

9.3


&#160;


Fidelity Series Blue Chip Growth Fund

7.6


&#160;


Fidelity Series Emerging Markets Opportunities Fund

7.5


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

6.6


&#160;


Fidelity Series Government Bond Index Fund

6.3


&#160;


Fidelity Series Investment Grade Bond Fund

6.1


&#160;


Fidelity Series Large Cap Growth Index Fund

4.9


&#160;


Fidelity Series International Value Fund

4.9


&#160;


Fidelity Series Overseas Fund

4.7


&#160;


&#160;

65.2

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177886_TH_0_Member"
      decimals="INF"
      id="ixv-211890"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_1_Member"
      decimals="INF"
      id="ixv-211891"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_2_Member"
      decimals="INF"
      id="ixv-211892"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_3_Member"
      decimals="INF"
      id="ixv-211893"
      unitRef="pure">0.073</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_4_Member"
      decimals="INF"
      id="ixv-211894"
      unitRef="pure">0.066</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_5_Member"
      decimals="INF"
      id="ixv-211895"
      unitRef="pure">0.063</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_6_Member"
      decimals="INF"
      id="ixv-211896"
      unitRef="pure">0.061</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_7_Member"
      decimals="INF"
      id="ixv-211897"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_8_Member"
      decimals="INF"
      id="ixv-211898"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177886_TH_9_Member"
      decimals="INF"
      id="ixv-211899"
      unitRef="pure">0.047</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-29974">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079286_ClassMember" id="ixv-29986">Fidelity Freedom&#xae; Index 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079286_ClassMember" id="ixv-29989">Fidelity Freedom&#xae; Index 2035 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079286_ClassMember" id="ixv-29993">FIHFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079286_ClassMember" id="ixv-30012">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079286_ClassMember" id="ixv-30014">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079286_ClassMember" id="ixv-30019">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="C000079286_ClassMember" id="ixv-30021">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079286_ClassMember" id="ixv-30024">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079286_ClassMember" id="ixv-30027">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079286_ClassMember" id="ixv-30034">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079286_ClassMember"
      decimals="0"
      id="ixv-211900"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079286_ClassMember"
      decimals="INF"
      id="ixv-211901"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079286_ClassMember" id="ixv-30076">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079286_ClassMember" id="ixv-30100">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,707


$11,145


$12,589


$13,173


$12,200


$17,602


$18,263


$16,994


$19,730


$20,949



Fidelity Freedom Index 2035 Composite Index&#x2120;


$10,000

$9,728


$11,173


$12,627


$13,244


$12,287


$17,744


$18,491


$17,178


$19,984


$21,215



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079286_LG_ClassMember_11YR" id="ixv-30119">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
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      id="ixv-30217">&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>
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    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079286_ClassMember" id="ixv-30315">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

6.18%

11.42%

7.68%


Fidelity Freedom Index 2035 Composite Index&#x2120;

6.16%


11.54%


7.81%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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>
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    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079286_ClassMember" id="ixv-30392">&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="C000079286_ClassMember" id="ixv-30396">&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="C000079286_ClassMember" id="ixv-30402">&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;$&lt;/span&gt;23,218,218,191&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,510,342&lt;/div&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>
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      contextRef="C000079286_InstantMember"
      decimals="0"
      id="ixv-211944"
      unitRef="usd">23218218191</us-gaap:AssetsNet>
    <oef:HoldingsCount
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    <oef:HoldingsTableTextBlock contextRef="C000079286_ClassMember" id="ixv-30477">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

40.8


Bond Funds

32.3


International Equity Funds

26.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 40.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 32.3&#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 - 26.9&#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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      id="ixv-211948"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
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    <oef:LargestHoldingsTableTextBlock contextRef="C000079286_ClassMember" id="ixv-30568">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

40.8


&#160;


Fidelity Series Global ex U.S. Index Fund

26.9


&#160;


Fidelity Series Bond Index Fund

21.7


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
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      id="ixv-211952"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
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      id="ixv-211953"
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      id="ixv-211955"
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      id="ixv-211956"
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    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-30699">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252912_ClassMember" id="ixv-30711">Fidelity Freedom&#xae; Index 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252912_ClassMember" id="ixv-30714">Fidelity Freedom&#xae; Index 2045 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252912_ClassMember" id="ixv-30718">FAVPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252912_ClassMember" id="ixv-30737">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2045 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252912_ClassMember" id="ixv-30739">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252912_ClassMember" id="ixv-30744">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252912_ClassMember" id="ixv-30746">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252912_ClassMember" id="ixv-30749">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252912_ClassMember" id="ixv-30752">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252912_ClassMember" id="ixv-30759">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252912_ClassMember"
      decimals="0"
      id="ixv-211958"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252912_ClassMember"
      decimals="INF"
      id="ixv-211959"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252912_ClassMember" id="ixv-30802">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252912_ClassMember" id="ixv-30808">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252912_ClassMember" id="ixv-30832">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,071,202,557



Fidelity Freedom Index 2045 Composite Index&#x2120;


$5,000,000,000

$5,055,971,476



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252912_LG_ClassMember_2YR" id="ixv-30851">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252912_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211960"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252912_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211961"
      unitRef="usd">5071202557</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252912_LG_1_AdditionalIndexMember_2YR"
      id="ixv-30864">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252912_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211962"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252912_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211963"
      unitRef="usd">5055971476</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252912_LG_2_AdditionalIndexMember_2YR"
      id="ixv-30877">&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="C000252912_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211964"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252912_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211965"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252912_ClassMember" id="ixv-30912">&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;$&lt;/span&gt;20,980,633,428&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;14,374,153&lt;/div&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;13&lt;span 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="C000252912_InstantMember"
      decimals="0"
      id="ixv-211966"
      unitRef="usd">20980633428</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252912_InstantMember"
      decimals="INF"
      id="ixv-211967"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252912_ClassMember"
      decimals="0"
      id="ixv-211968"
      unitRef="usd">14374153</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252912_ClassMember"
      decimals="INF"
      id="ixv-211969"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252912_ClassMember" id="ixv-30987">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000252912_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-211970"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252912_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-211971"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252912_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-211972"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252912_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-211973"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252912_ClassMember" id="ixv-31078">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252912_TH_0_Member"
      decimals="INF"
      id="ixv-211974"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252912_TH_1_Member"
      decimals="INF"
      id="ixv-211975"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252912_TH_2_Member"
      decimals="INF"
      id="ixv-211976"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252912_TH_3_Member"
      decimals="INF"
      id="ixv-211977"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252912_TH_4_Member"
      decimals="INF"
      id="ixv-211978"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-31199">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177889_ClassMember" id="ixv-31211">Fidelity Flex&#xae; Freedom Blend 2045 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177889_ClassMember" id="ixv-31214">Fidelity Flex&#xae; Freedom Blend 2045 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177889_ClassMember" id="ixv-31218">FOLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177889_ClassMember" id="ixv-31237">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2045 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177889_ClassMember" id="ixv-31239">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177889_ClassMember" id="ixv-31244">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177889_ClassMember" id="ixv-31246">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177889_ClassMember" id="ixv-31249">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177889_ClassMember" id="ixv-31252">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177889_ClassMember" id="ixv-31259">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2045 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177889_ClassMember"
      decimals="0"
      id="ixv-211979"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177889_ClassMember"
      decimals="INF"
      id="ixv-211980"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177889_ClassMember" id="ixv-31311">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177889_ClassMember" id="ixv-31342">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2045 Fund


$10,000

$10,991


$11,271


$10,115


$15,838


$16,453


$15,362


$18,674


$19,769



Fidelity Freedom 2045 Composite Index&#x2120;


$10,000

$10,910


$11,449


$10,443


$15,666


$16,507


$15,295


$18,375


$19,579



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177889_LG_ClassMember_9YR" id="ixv-31361">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2045 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-211981"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-211982"
      unitRef="usd">10991</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-211983"
      unitRef="usd">11271</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-211984"
      unitRef="usd">10115</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-211985"
      unitRef="usd">15838</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-211986"
      unitRef="usd">16453</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-211987"
      unitRef="usd">15362</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-211988"
      unitRef="usd">18674</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-211989"
      unitRef="usd">19769</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177889_LG_1_AdditionalIndexMember_9YR"
      id="ixv-31402">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2045 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211990"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-211991"
      unitRef="usd">10910</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-211992"
      unitRef="usd">11449</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-211993"
      unitRef="usd">10443</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-211994"
      unitRef="usd">15666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-211995"
      unitRef="usd">16507</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-211996"
      unitRef="usd">15295</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-211997"
      unitRef="usd">18375</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-211998"
      unitRef="usd">19579</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177889_LG_2_AdditionalIndexMember_9YR"
      id="ixv-31443">&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="C000177889_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-211999"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212000"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212001"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212002"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212003"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212004"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212005"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212006"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177889_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212007"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177889_ClassMember" id="ixv-31527">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2045 Fund

5.86%

14.34%

9.11%


Fidelity Freedom 2045 Composite Index&#x2120;

6.55%


13.39%


8.98%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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="C000177889_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212008"
      unitRef="pure">0.0586</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212009"
      unitRef="pure">0.1434</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212010"
      unitRef="pure">0.0911</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212011"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212012"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212013"
      unitRef="pure">0.0898</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212014"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212015"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177889_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212016"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177889_ClassMember" id="ixv-31596">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177889_ClassMember" id="ixv-31613">&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="C000177889_ClassMember" id="ixv-31617">&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="C000177889_ClassMember" id="ixv-31623">&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;$&lt;/span&gt;67,103,000&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177889_InstantMember"
      decimals="0"
      id="ixv-212017"
      unitRef="usd">67103000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177889_InstantMember"
      decimals="INF"
      id="ixv-212018"
      unitRef="holding">23</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177889_ClassMember"
      decimals="0"
      id="ixv-212019"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177889_ClassMember"
      decimals="INF"
      id="ixv-212020"
      unitRef="pure">0.46</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177889_ClassMember" id="ixv-31698">
&#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="C000177889_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212021"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212022"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212023"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212024"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177889_ClassMember" id="ixv-31789">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

14.6


&#160;


Fidelity Series Blue Chip Growth Fund

12.0


&#160;


Fidelity Series Emerging Markets Opportunities Fund

10.4


&#160;


Fidelity Series Large Cap Growth Index Fund

7.7


&#160;


Fidelity Series International Growth Fund

7.2


&#160;


Fidelity Series Overseas Fund

7.1


&#160;


Fidelity Series International Value Fund

7.1


&#160;


Fidelity Series Large Cap Stock Fund

7.1


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Value Discovery Fund

5.3


&#160;


&#160;

85.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177889_TH_0_Member"
      decimals="INF"
      id="ixv-212025"
      unitRef="pure">0.146</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_1_Member"
      decimals="INF"
      id="ixv-212026"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_2_Member"
      decimals="INF"
      id="ixv-212027"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_3_Member"
      decimals="INF"
      id="ixv-212028"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_4_Member"
      decimals="INF"
      id="ixv-212029"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_5_Member"
      decimals="INF"
      id="ixv-212030"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_6_Member"
      decimals="INF"
      id="ixv-212031"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_7_Member"
      decimals="INF"
      id="ixv-212032"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_8_Member"
      decimals="INF"
      id="ixv-212033"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177889_TH_9_Member"
      decimals="INF"
      id="ixv-212034"
      unitRef="pure">0.053</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-31960">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252916_ClassMember" id="ixv-31972">Fidelity Freedom&#xae; Index 2015 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252916_ClassMember" id="ixv-31975">Fidelity Freedom&#xae; Index 2015 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252916_ClassMember" id="ixv-31979">FATVX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252916_ClassMember" id="ixv-31998">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2015 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252916_ClassMember" id="ixv-32000">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252916_ClassMember" id="ixv-32005">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252916_ClassMember" id="ixv-32007">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252916_ClassMember" id="ixv-32010">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252916_ClassMember" id="ixv-32013">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252916_ClassMember" id="ixv-32020">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252916_ClassMember"
      decimals="0"
      id="ixv-212035"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252916_ClassMember"
      decimals="INF"
      id="ixv-212036"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252916_ClassMember" id="ixv-32063">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252916_ClassMember" id="ixv-32069">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252916_ClassMember" id="ixv-32093">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,072,521,024



Fidelity Freedom Index 2015 Composite Index&#x2120;


$5,000,000,000

$5,069,883,518



Bloomberg U.S. Aggregate Bond Index


$5,000,000,000

$5,042,673,521



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252916_LG_ClassMember_2YR" id="ixv-32112">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252916_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212037"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252916_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212038"
      unitRef="usd">5072521024</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252916_LG_1_AdditionalIndexMember_2YR"
      id="ixv-32125">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2015 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252916_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212039"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252916_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212040"
      unitRef="usd">5069883518</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252916_LG_2_AdditionalIndexMember_2YR"
      id="ixv-32138">&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="C000252916_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212041"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252916_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212042"
      unitRef="usd">5042673521</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252916_ClassMember" id="ixv-32173">&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;$&lt;/span&gt;1,926,973,408&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,595,575&lt;/div&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="C000252916_InstantMember"
      decimals="0"
      id="ixv-212043"
      unitRef="usd">1926973408</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252916_InstantMember"
      decimals="INF"
      id="ixv-212044"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252916_ClassMember"
      decimals="0"
      id="ixv-212045"
      unitRef="usd">1595575</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252916_ClassMember"
      decimals="INF"
      id="ixv-212046"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252916_ClassMember" id="ixv-32248">
&#160;
&#160;
&#160;
&#160;
Bond Funds

60.1


Domestic Equity Funds

20.7


International Equity Funds

13.7


Short-Term Funds

5.5


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 60.1&#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 - 20.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 13.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 5.5&#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="C000252916_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212047"
      unitRef="pure">0.601</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212048"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212049"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-212050"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212051"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252916_ClassMember" id="ixv-32352">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

36.9


&#160;


Fidelity Series Total Market Index Fund

20.7


&#160;


Fidelity Series Global ex U.S. Index Fund

13.7


&#160;


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

10.4


&#160;


Fidelity Series Treasury Bill Index Fund

5.5


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.0


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

4.4


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252916_TH_0_Member"
      decimals="INF"
      id="ixv-212052"
      unitRef="pure">0.369</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_TH_1_Member"
      decimals="INF"
      id="ixv-212053"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_TH_2_Member"
      decimals="INF"
      id="ixv-212054"
      unitRef="pure">0.137</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_TH_3_Member"
      decimals="INF"
      id="ixv-212055"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_TH_4_Member"
      decimals="INF"
      id="ixv-212056"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_TH_5_Member"
      decimals="INF"
      id="ixv-212057"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_TH_6_Member"
      decimals="INF"
      id="ixv-212058"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252916_TH_7_Member"
      decimals="INF"
      id="ixv-212059"
      unitRef="pure">0.034</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-32503">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252922_ClassMember" id="ixv-32515">Fidelity Freedom&#xae; Index 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252922_ClassMember" id="ixv-32518">Fidelity Freedom&#xae; Index 2055 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252922_ClassMember" id="ixv-32522">FAVRX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252922_ClassMember" id="ixv-32541">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2055 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252922_ClassMember" id="ixv-32543">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252922_ClassMember" id="ixv-32548">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252922_ClassMember" id="ixv-32550">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252922_ClassMember" id="ixv-32553">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252922_ClassMember" id="ixv-32556">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252922_ClassMember" id="ixv-32563">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252922_ClassMember"
      decimals="0"
      id="ixv-212060"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252922_ClassMember"
      decimals="INF"
      id="ixv-212061"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252922_ClassMember" id="ixv-32606">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252922_ClassMember" id="ixv-32612">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252922_ClassMember" id="ixv-32636">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,072,072,046



Fidelity Freedom Index 2055 Composite Index&#x2120;


$5,000,000,000

$5,055,971,476



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252922_LG_ClassMember_2YR" id="ixv-32655">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252922_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212062"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252922_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212063"
      unitRef="usd">5072072046</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252922_LG_1_AdditionalIndexMember_2YR"
      id="ixv-32668">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252922_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212064"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252922_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212065"
      unitRef="usd">5055971476</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252922_LG_2_AdditionalIndexMember_2YR"
      id="ixv-32681">&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="C000252922_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212066"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252922_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212067"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252922_ClassMember" id="ixv-32716">&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;$&lt;/span&gt;14,977,278,085&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,137,869&lt;/div&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;12&lt;span 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="C000252922_InstantMember"
      decimals="0"
      id="ixv-212068"
      unitRef="usd">14977278085</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252922_InstantMember"
      decimals="INF"
      id="ixv-212069"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252922_ClassMember"
      decimals="0"
      id="ixv-212070"
      unitRef="usd">10137869</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252922_ClassMember"
      decimals="INF"
      id="ixv-212071"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252922_ClassMember" id="ixv-32791">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000252922_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212072"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252922_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212073"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252922_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212074"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252922_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212075"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252922_ClassMember" id="ixv-32882">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252922_TH_0_Member"
      decimals="INF"
      id="ixv-212076"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252922_TH_1_Member"
      decimals="INF"
      id="ixv-212077"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252922_TH_2_Member"
      decimals="INF"
      id="ixv-212078"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252922_TH_3_Member"
      decimals="INF"
      id="ixv-212079"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252922_TH_4_Member"
      decimals="INF"
      id="ixv-212080"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-33003">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177887_ClassMember" id="ixv-33015">Fidelity Flex&#xae; Freedom Blend 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177887_ClassMember" id="ixv-33018">Fidelity Flex&#xae; Freedom Blend 2035 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177887_ClassMember" id="ixv-33022">FJLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177887_ClassMember" id="ixv-33041">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177887_ClassMember" id="ixv-33043">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177887_ClassMember" id="ixv-33048">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177887_ClassMember" id="ixv-33050">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177887_ClassMember" id="ixv-33053">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177887_ClassMember" id="ixv-33056">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177887_ClassMember" id="ixv-33063">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2035 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177887_ClassMember"
      decimals="0"
      id="ixv-212081"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177887_ClassMember"
      decimals="INF"
      id="ixv-212082"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177887_ClassMember" id="ixv-33115">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177887_ClassMember" id="ixv-33146">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2035 Fund


$10,000

$10,977


$11,279


$10,294


$15,509


$15,966


$14,923


$17,507


$18,531



Fidelity Freedom 2035 Composite Index&#x2120;


$10,000

$10,896


$11,442


$10,615


$15,329


$15,974


$14,840


$17,264


$18,327



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177887_LG_ClassMember_9YR" id="ixv-33165">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2035 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212083"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212084"
      unitRef="usd">10977</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212085"
      unitRef="usd">11279</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212086"
      unitRef="usd">10294</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212087"
      unitRef="usd">15509</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212088"
      unitRef="usd">15966</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212089"
      unitRef="usd">14923</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212090"
      unitRef="usd">17507</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212091"
      unitRef="usd">18531</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177887_LG_1_AdditionalIndexMember_9YR"
      id="ixv-33206">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212092"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212093"
      unitRef="usd">10896</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212094"
      unitRef="usd">11442</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212095"
      unitRef="usd">10615</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212096"
      unitRef="usd">15329</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212097"
      unitRef="usd">15974</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212098"
      unitRef="usd">14840</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212099"
      unitRef="usd">17264</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212100"
      unitRef="usd">18327</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177887_LG_2_AdditionalIndexMember_9YR"
      id="ixv-33247">&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="C000177887_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212101"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212102"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212103"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212104"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212105"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212106"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212107"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212108"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177887_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212109"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177887_ClassMember" id="ixv-33331">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2035 Fund

5.85%

12.48%

8.21%


Fidelity Freedom 2035 Composite Index&#x2120;

6.16%


11.54%


8.06%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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="C000177887_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212110"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212111"
      unitRef="pure">0.1248</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212112"
      unitRef="pure">0.0821</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212113"
      unitRef="pure">0.0616</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212114"
      unitRef="pure">0.1154</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212115"
      unitRef="pure">0.0806</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212116"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212117"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177887_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212118"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177887_ClassMember" id="ixv-33400">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177887_ClassMember" id="ixv-33417">&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="C000177887_ClassMember" id="ixv-33421">&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="C000177887_ClassMember" id="ixv-33427">&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;$&lt;/span&gt;76,761,670&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;30&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177887_InstantMember"
      decimals="0"
      id="ixv-212119"
      unitRef="usd">76761670</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177887_InstantMember"
      decimals="INF"
      id="ixv-212120"
      unitRef="holding">30</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177887_ClassMember"
      decimals="0"
      id="ixv-212121"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177887_ClassMember"
      decimals="INF"
      id="ixv-212122"
      unitRef="pure">0.37</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177887_ClassMember" id="ixv-33502">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

38.4


International Equity Funds

32.4


Bond Funds

29.2


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 38.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 29.2&#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="C000177887_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212123"
      unitRef="pure">0.384</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212124"
      unitRef="pure">0.324</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212125"
      unitRef="pure">0.292</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212126"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177887_ClassMember" id="ixv-33593">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

10.8


&#160;


Fidelity Series Blue Chip Growth Fund

8.9


&#160;


Fidelity Series Emerging Markets Opportunities Fund

8.4


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.8


&#160;


Fidelity Series Large Cap Growth Index Fund

5.7


&#160;


Fidelity Series International Value Fund

5.4


&#160;


Fidelity Series International Growth Fund

5.4


&#160;


Fidelity Series Overseas Fund

5.4


&#160;


Fidelity Series Large Cap Stock Fund

5.3


&#160;


Fidelity Series Government Bond Index Fund

4.7


&#160;


&#160;

67.8

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177887_TH_0_Member"
      decimals="INF"
      id="ixv-212127"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_1_Member"
      decimals="INF"
      id="ixv-212128"
      unitRef="pure">0.089</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_2_Member"
      decimals="INF"
      id="ixv-212129"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_3_Member"
      decimals="INF"
      id="ixv-212130"
      unitRef="pure">0.078</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_4_Member"
      decimals="INF"
      id="ixv-212131"
      unitRef="pure">0.057</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_5_Member"
      decimals="INF"
      id="ixv-212132"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_6_Member"
      decimals="INF"
      id="ixv-212133"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_7_Member"
      decimals="INF"
      id="ixv-212134"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_8_Member"
      decimals="INF"
      id="ixv-212135"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177887_TH_9_Member"
      decimals="INF"
      id="ixv-212136"
      unitRef="pure">0.047</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-33764">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157968_ClassMember" id="ixv-33776">Fidelity Freedom&#xae; Index 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157968_ClassMember" id="ixv-33779">Fidelity Freedom&#xae; Index 2055 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157968_ClassMember" id="ixv-33783">FFLDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157968_ClassMember" id="ixv-33802">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157968_ClassMember" id="ixv-33804">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157968_ClassMember" id="ixv-33809">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="C000157968_ClassMember" id="ixv-33811">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157968_ClassMember" id="ixv-33814">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157968_ClassMember" id="ixv-33817">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157968_ClassMember" id="ixv-33824">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157968_ClassMember"
      decimals="0"
      id="ixv-212137"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157968_ClassMember"
      decimals="INF"
      id="ixv-212138"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157968_ClassMember" id="ixv-33866">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157968_ClassMember" id="ixv-33890">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,744,385


$5,455,203


$6,171,694


$6,456,431


$5,884,840


$8,819,588


$9,253,601


$8,599,637


$10,308,926


$10,995,847



Fidelity Freedom Index 2055 Composite Index&#x2120;


$5,000,000

$4,751,667


$5,459,524


$6,179,499


$6,477,152


$5,908,057


$8,862,422


$9,338,439


$8,652,539


$10,395,314


$11,076,086



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157968_LG_ClassMember_11YR" id="ixv-33909">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-212139"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-212140"
      unitRef="usd">4744385</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212141"
      unitRef="usd">5455203</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212142"
      unitRef="usd">6171694</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212143"
      unitRef="usd">6456431</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212144"
      unitRef="usd">5884840</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212145"
      unitRef="usd">8819588</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212146"
      unitRef="usd">9253601</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212147"
      unitRef="usd">8599637</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212148"
      unitRef="usd">10308926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212149"
      unitRef="usd">10995847</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157968_LG_1_AdditionalIndexMember_11YR"
      id="ixv-33958">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212150"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212151"
      unitRef="usd">4751667</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212152"
      unitRef="usd">5459524</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212153"
      unitRef="usd">6179499</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212154"
      unitRef="usd">6477152</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212155"
      unitRef="usd">5908057</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212156"
      unitRef="usd">8862422</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212157"
      unitRef="usd">9338439</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212158"
      unitRef="usd">8652539</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212159"
      unitRef="usd">10395314</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212160"
      unitRef="usd">11076086</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157968_LG_2_AdditionalIndexMember_11YR"
      id="ixv-34007">&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="C000157968_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212161"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212162"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212163"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212164"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212165"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212166"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212167"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212168"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212169"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212170"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157968_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212171"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157968_ClassMember" id="ixv-34105">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

6.66%

13.32%

8.40%


Fidelity Freedom Index 2055 Composite Index&#x2120;

6.55%


13.39%


8.48%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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="C000157968_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212172"
      unitRef="pure">0.0666</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212173"
      unitRef="pure">0.1332</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212174"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212175"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212176"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212177"
      unitRef="pure">0.0848</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212178"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212179"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157968_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212180"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157968_ClassMember" id="ixv-34174">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157968_ClassMember" id="ixv-34191">&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="C000157968_ClassMember" id="ixv-34195">&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="C000157968_ClassMember" id="ixv-34201">&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;$&lt;/span&gt;14,977,278,085&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,137,869&lt;/div&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;12&lt;span 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="C000157968_InstantMember"
      decimals="0"
      id="ixv-212181"
      unitRef="usd">14977278085</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157968_InstantMember"
      decimals="INF"
      id="ixv-212182"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157968_ClassMember"
      decimals="0"
      id="ixv-212183"
      unitRef="usd">10137869</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157968_ClassMember"
      decimals="INF"
      id="ixv-212184"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157968_ClassMember" id="ixv-34276">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000157968_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212185"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157968_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212186"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157968_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212187"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157968_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212188"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157968_ClassMember" id="ixv-34367">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157968_TH_0_Member"
      decimals="INF"
      id="ixv-212189"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157968_TH_1_Member"
      decimals="INF"
      id="ixv-212190"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157968_TH_2_Member"
      decimals="INF"
      id="ixv-212191"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157968_TH_3_Member"
      decimals="INF"
      id="ixv-212192"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157968_TH_4_Member"
      decimals="INF"
      id="ixv-212193"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-34488">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000252920_ClassMember" id="ixv-34500">Fidelity Freedom&#xae; Index 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000252920_ClassMember" id="ixv-34503">Fidelity Freedom&#xae; Index 2035 Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252920_ClassMember" id="ixv-34507">FAVNX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252920_ClassMember" id="ixv-34526">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2035 Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252920_ClassMember" id="ixv-34528">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252920_ClassMember" id="ixv-34533">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252920_ClassMember" id="ixv-34535">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252920_ClassMember" id="ixv-34538">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252920_ClassMember" id="ixv-34541">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252920_ClassMember" id="ixv-34548">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252920_ClassMember"
      decimals="0"
      id="ixv-212194"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252920_ClassMember"
      decimals="INF"
      id="ixv-212195"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252920_ClassMember" id="ixv-34591">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252920_ClassMember" id="ixv-34597">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252920_ClassMember" id="ixv-34621">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,065,570,236



Fidelity Freedom Index 2035 Composite Index&#x2120;


$5,000,000,000

$5,054,037,949



S&amp;P 500&#xae; Index


$5,000,000,000

$5,077,848,798



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252920_LG_ClassMember_2YR" id="ixv-34640">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252920_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212196"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252920_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212197"
      unitRef="usd">5065570236</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252920_LG_1_AdditionalIndexMember_2YR"
      id="ixv-34653">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252920_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212198"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252920_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212199"
      unitRef="usd">5054037949</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252920_LG_2_AdditionalIndexMember_2YR"
      id="ixv-34666">&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="C000252920_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212200"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252920_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212201"
      unitRef="usd">5077848798</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252920_ClassMember" id="ixv-34701">&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;$&lt;/span&gt;23,218,218,191&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,510,342&lt;/div&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="C000252920_InstantMember"
      decimals="0"
      id="ixv-212202"
      unitRef="usd">23218218191</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252920_InstantMember"
      decimals="INF"
      id="ixv-212203"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252920_ClassMember"
      decimals="0"
      id="ixv-212204"
      unitRef="usd">16510342</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252920_ClassMember"
      decimals="INF"
      id="ixv-212205"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252920_ClassMember" id="ixv-34776">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

40.8


Bond Funds

32.3


International Equity Funds

26.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 40.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 32.3&#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 - 26.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252920_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212206"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212207"
      unitRef="pure">0.323</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212208"
      unitRef="pure">0.269</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212209"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252920_ClassMember" id="ixv-34867">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

40.8


&#160;


Fidelity Series Global ex U.S. Index Fund

26.9


&#160;


Fidelity Series Bond Index Fund

21.7


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252920_TH_0_Member"
      decimals="INF"
      id="ixv-212210"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_TH_1_Member"
      decimals="INF"
      id="ixv-212211"
      unitRef="pure">0.269</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_TH_2_Member"
      decimals="INF"
      id="ixv-212212"
      unitRef="pure">0.217</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_TH_3_Member"
      decimals="INF"
      id="ixv-212213"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_TH_4_Member"
      decimals="INF"
      id="ixv-212214"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252920_TH_5_Member"
      decimals="INF"
      id="ixv-212215"
      unitRef="pure">0.014</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-34998">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000177881_ClassMember" id="ixv-35002">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000177881_ClassMember" id="ixv-35013">Fidelity Flex&#xae; Freedom Blend Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000177881_ClassMember" id="ixv-35016">Fidelity Flex&#xae; Freedom Blend Income Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177881_ClassMember" id="ixv-35020">FTLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177881_ClassMember" id="ixv-35039">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177881_ClassMember" id="ixv-35041">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177881_ClassMember" id="ixv-35046">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177881_ClassMember" id="ixv-35048">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177881_ClassMember" id="ixv-35051">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177881_ClassMember" id="ixv-35054">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177881_ClassMember" id="ixv-35061">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend Income Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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
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      decimals="0"
      id="ixv-212216"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177881_ClassMember"
      decimals="INF"
      id="ixv-212217"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177881_ClassMember" id="ixv-35113">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&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="C000177881_ClassMember" id="ixv-35144">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend Income Fund


$10,000

$10,314


$10,689


$10,921


$12,323


$12,247


$11,756


$12,479


$13,190



Fidelity Freedom Income Composite Index&#x2120;


$10,000

$10,253


$10,695


$11,114


$12,226


$12,190


$11,725


$12,445


$13,135



Bloomberg U.S. Aggregate Bond Index


$10,000

$9,960


$10,406


$11,336


$11,416


$10,942


$10,419


$10,596


$11,113



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177881_LG_ClassMember_9YR" id="ixv-35163">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend Income Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212218"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212219"
      unitRef="usd">10314</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212220"
      unitRef="usd">10689</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212221"
      unitRef="usd">10921</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212222"
      unitRef="usd">12323</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212223"
      unitRef="usd">12247</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212224"
      unitRef="usd">11756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212225"
      unitRef="usd">12479</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212226"
      unitRef="usd">13190</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177881_LG_1_AdditionalIndexMember_9YR"
      id="ixv-35204">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212227"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212228"
      unitRef="usd">10253</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212229"
      unitRef="usd">10695</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212230"
      unitRef="usd">11114</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212231"
      unitRef="usd">12226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212232"
      unitRef="usd">12190</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212233"
      unitRef="usd">11725</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212234"
      unitRef="usd">12445</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212235"
      unitRef="usd">13135</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177881_LG_2_AdditionalIndexMember_9YR"
      id="ixv-35245">&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="C000177881_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212236"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212237"
      unitRef="usd">9960</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212238"
      unitRef="usd">10406</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212239"
      unitRef="usd">11336</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212240"
      unitRef="usd">11416</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212241"
      unitRef="usd">10942</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212242"
      unitRef="usd">10419</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212243"
      unitRef="usd">10596</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177881_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212244"
      unitRef="usd">11113</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177881_ClassMember" id="ixv-35329">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend Income Fund

5.70%

3.85%

3.61%


Fidelity Freedom Income Composite Index&#x2120;

5.54%


3.40%


3.55%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.36%




A&#160; &#160;From June 8, 2017

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="C000177881_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212245"
      unitRef="pure">0.0570</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212246"
      unitRef="pure">0.0385</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212247"
      unitRef="pure">0.0361</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212248"
      unitRef="pure">0.0554</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212249"
      unitRef="pure">0.0340</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212250"
      unitRef="pure">0.0355</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212251"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212252"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177881_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212253"
      unitRef="pure">0.0136</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177881_ClassMember" id="ixv-35399">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177881_ClassMember" id="ixv-35416">&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="C000177881_ClassMember" id="ixv-35420">&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="C000177881_ClassMember" id="ixv-35426">&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;$&lt;/span&gt;3,641,003&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;34&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177881_InstantMember"
      decimals="0"
      id="ixv-212254"
      unitRef="usd">3641003</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177881_InstantMember"
      decimals="INF"
      id="ixv-212255"
      unitRef="holding">34</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177881_ClassMember"
      decimals="0"
      id="ixv-212256"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177881_ClassMember"
      decimals="INF"
      id="ixv-212257"
      unitRef="pure">0.37</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177881_ClassMember" id="ixv-35501">
&#160;
&#160;
&#160;
&#160;
Bond Funds

72.0


International Equity Funds

12.9


Domestic Equity Funds

9.2


Short-Term Funds

5.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 72.0&#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 - 12.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 9.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 5.9&#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="C000177881_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212258"
      unitRef="pure">0.720</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212259"
      unitRef="pure">0.129</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212260"
      unitRef="pure">0.092</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-212261"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212262"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177881_ClassMember" id="ixv-35605">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


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

18.5


&#160;


Fidelity Series Government Bond Index Fund

13.8


&#160;


Fidelity Series Investment Grade Bond Fund

13.1


&#160;


Fidelity Series Corporate Bond Fund

8.5


&#160;


Fidelity Series Investment Grade Securitized Fund

8.3


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.1


&#160;


Fidelity Series Emerging Markets Opportunities Fund

3.8


&#160;


Fidelity Series Treasury Bill Index Fund

3.6


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

2.7


&#160;


Fidelity Series Large Cap Value Index Fund

2.6


&#160;


&#160;

80.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177881_TH_0_Member"
      decimals="INF"
      id="ixv-212263"
      unitRef="pure">0.185</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_1_Member"
      decimals="INF"
      id="ixv-212264"
      unitRef="pure">0.138</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_2_Member"
      decimals="INF"
      id="ixv-212265"
      unitRef="pure">0.131</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_3_Member"
      decimals="INF"
      id="ixv-212266"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_4_Member"
      decimals="INF"
      id="ixv-212267"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_5_Member"
      decimals="INF"
      id="ixv-212268"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_6_Member"
      decimals="INF"
      id="ixv-212269"
      unitRef="pure">0.038</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_7_Member"
      decimals="INF"
      id="ixv-212270"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_8_Member"
      decimals="INF"
      id="ixv-212271"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177881_TH_9_Member"
      decimals="INF"
      id="ixv-212272"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000177881_ClassMember" id="ixv-35730">
&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;1-800-544-3455&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;Fidelity Flex&#xae; Freedom Blend 2005 Fund merged into Fidelity Flex&#xae; Freedom Blend Income Fund on June 14, 2024.&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="C000177881_ClassMember" id="ixv-35736">&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;1-800-544-3455&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="C000177881_ClassMember" id="ixv-35740">&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="C000177881_ClassMember" id="ixv-35743">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000177881_ClassMember" id="ixv-35747">&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="C000177881_ClassMember" id="ixv-35762">&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-35818">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250738_ClassMember" id="ixv-35830">Fidelity Freedom&#xae; Index 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250738_ClassMember" id="ixv-35833">Fidelity Freedom&#xae; Index 2070 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250738_ClassMember" id="ixv-35837">FRBUX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250738_ClassMember" id="ixv-35856">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250738_ClassMember" id="ixv-35858">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250738_ClassMember" id="ixv-35863">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="C000250738_ClassMember" id="ixv-35865">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250738_ClassMember" id="ixv-35868">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250738_ClassMember" id="ixv-35871">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250738_ClassMember" id="ixv-35878">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;6&lt;span style="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;0.08&lt;span 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="C000250738_ClassMember"
      decimals="0"
      id="ixv-212273"
      unitRef="usd">6</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250738_ClassMember"
      decimals="INF"
      id="ixv-212274"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250738_ClassMember" id="ixv-35921">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250738_ClassMember" id="ixv-35927">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000250738_ClassMember" id="ixv-35951">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2024 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$5,226,653



Fidelity Freedom Index 2070 Composite Index&#x2120;


$5,000,000

$5,220,733



S&amp;P 500&#xae; Index


$5,000,000

$5,190,245



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250738_LG_ClassMember_2YR" id="ixv-35970">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250738_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212275"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250738_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212276"
      unitRef="usd">5226653</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250738_LG_1_AdditionalIndexMember_2YR"
      id="ixv-35983">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2070 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250738_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212277"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250738_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212278"
      unitRef="usd">5220733</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250738_LG_2_AdditionalIndexMember_2YR"
      id="ixv-35996">&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="C000250738_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212279"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250738_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212280"
      unitRef="usd">5190245</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250738_ClassMember" id="ixv-36031">&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;$&lt;/span&gt;49,873,888&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;8,824&lt;/div&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;9&lt;span 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="C000250738_InstantMember"
      decimals="0"
      id="ixv-212281"
      unitRef="usd">49873888</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250738_InstantMember"
      decimals="INF"
      id="ixv-212282"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250738_ClassMember"
      decimals="0"
      id="ixv-212283"
      unitRef="usd">8824</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250738_ClassMember"
      decimals="INF"
      id="ixv-212284"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250738_ClassMember" id="ixv-36106">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000250738_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212285"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250738_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212286"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250738_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212287"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250738_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212288"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250738_ClassMember" id="ixv-36197">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250738_TH_0_Member"
      decimals="INF"
      id="ixv-212289"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250738_TH_1_Member"
      decimals="INF"
      id="ixv-212290"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250738_TH_2_Member"
      decimals="INF"
      id="ixv-212291"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250738_TH_3_Member"
      decimals="INF"
      id="ixv-212292"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250738_TH_4_Member"
      decimals="INF"
      id="ixv-212293"
      unitRef="pure">0.010</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-36318">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000252914_ClassMember" id="ixv-36322">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000252914_ClassMember" id="ixv-36333">Fidelity Freedom&#xae; Index Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000252914_ClassMember" id="ixv-36336">Fidelity Freedom&#xae; Index Income Fund Premier II Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000252914_ClassMember" id="ixv-36340">FATQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000252914_ClassMember" id="ixv-36359">This annual shareholder report contains information about Fidelity Freedom&#xae; Index Income Fund for the period August 22, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000252914_ClassMember" id="ixv-36361">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000252914_ClassMember" id="ixv-36366">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000252914_ClassMember" id="ixv-36368">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000252914_ClassMember" id="ixv-36371">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000252914_ClassMember" id="ixv-36374">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000252914_ClassMember" id="ixv-36381">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;2&lt;span style="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;0.04&lt;span 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="C000252914_ClassMember"
      decimals="0"
      id="ixv-212294"
      unitRef="usd">2</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000252914_ClassMember"
      decimals="INF"
      id="ixv-212295"
      unitRef="pure">0.0004</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000252914_ClassMember" id="ixv-36424">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000252914_ClassMember" id="ixv-36430">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000252914_ClassMember" id="ixv-36454">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
August 22, 2024 through March 31, 2025.
Initial investment of $5,000,000,000.
Premier II Class


$5,000,000,000

$5,084,928,646



Fidelity Freedom Index Income Composite Index&#x2120;


$5,000,000,000

$5,085,245,416



Bloomberg U.S. Aggregate Bond Index


$5,000,000,000

$5,042,673,521



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000252914_LG_ClassMember_2YR" id="ixv-36473">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier II Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252914_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212296"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252914_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212297"
      unitRef="usd">5084928646</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252914_LG_1_AdditionalIndexMember_2YR"
      id="ixv-36486">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000252914_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212298"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252914_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212299"
      unitRef="usd">5085245416</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000252914_LG_2_AdditionalIndexMember_2YR"
      id="ixv-36499">&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="C000252914_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212300"
      unitRef="usd">5000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000252914_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212301"
      unitRef="usd">5042673521</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000252914_ClassMember" id="ixv-36534">&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;$&lt;/span&gt;1,694,169,632&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,195,611&lt;/div&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;18&lt;span 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="C000252914_InstantMember"
      decimals="0"
      id="ixv-212302"
      unitRef="usd">1694169632</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000252914_InstantMember"
      decimals="INF"
      id="ixv-212303"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000252914_ClassMember"
      decimals="0"
      id="ixv-212304"
      unitRef="usd">1195611</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000252914_ClassMember"
      decimals="INF"
      id="ixv-212305"
      unitRef="pure">0.18</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000252914_ClassMember" id="ixv-36609">
&#160;
&#160;
&#160;
&#160;
Bond Funds

70.9


Domestic Equity Funds

11.5


Short-Term Funds

10.0


International Equity Funds

7.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 70.9&#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 - 11.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 10.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 7.6&#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="C000252914_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212306"
      unitRef="pure">0.709</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212307"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-212308"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212309"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212310"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000252914_ClassMember" id="ixv-36713">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

43.1


&#160;


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

19.9


&#160;


Fidelity Series Total Market Index Fund

11.5


&#160;


Fidelity Series Treasury Bill Index Fund

10.0


&#160;


Fidelity Series Global ex U.S. Index Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000252914_TH_0_Member"
      decimals="INF"
      id="ixv-212311"
      unitRef="pure">0.431</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_TH_1_Member"
      decimals="INF"
      id="ixv-212312"
      unitRef="pure">0.199</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_TH_2_Member"
      decimals="INF"
      id="ixv-212313"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_TH_3_Member"
      decimals="INF"
      id="ixv-212314"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_TH_4_Member"
      decimals="INF"
      id="ixv-212315"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_TH_5_Member"
      decimals="INF"
      id="ixv-212316"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000252914_TH_6_Member"
      decimals="INF"
      id="ixv-212317"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000252914_ClassMember" id="ixv-36808">
&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 August 22, 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;1-800-544-3455&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;Fidelity Freedom&#xae; Index 2005 Fund merged into Fidelity Freedom&#xae; Index Income Fund on June 14, 2024.&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="C000252914_ClassMember" id="ixv-36814">&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 August 22, 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;1-800-544-3455&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="C000252914_ClassMember" id="ixv-36818">&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="C000252914_ClassMember" id="ixv-36821">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000252914_ClassMember" id="ixv-36825">&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-36891">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000250724_ClassMember" id="ixv-36903">Fidelity Flex&#xae; Freedom Blend 2070 Fund</oef:FundName>
    <oef:ClassName contextRef="C000250724_ClassMember" id="ixv-36906">Fidelity Flex&#xae; Freedom Blend 2070 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000250724_ClassMember" id="ixv-36910">FRBQX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000250724_ClassMember" id="ixv-36929">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2070 Fund for the period June 28, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000250724_ClassMember" id="ixv-36931">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000250724_ClassMember" id="ixv-36936">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000250724_ClassMember" id="ixv-36938">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000250724_ClassMember" id="ixv-36941">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000250724_ClassMember" id="ixv-36944">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000250724_ClassMember" id="ixv-36951">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2070 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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;B&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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;C&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;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;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;C &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000250724_ClassMember"
      decimals="0"
      id="ixv-212318"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000250724_ClassMember"
      decimals="INF"
      id="ixv-212319"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:ExpensesShortPeriodFnTextBlock contextRef="C000250724_ClassMember" id="ixv-36996">Expenses for the full reporting period would be higher.</oef:ExpensesShortPeriodFnTextBlock>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000250724_ClassMember" id="ixv-37008">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000250724_ClassMember" id="ixv-37039">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 Flex&#xae; Freedom Blend 2070 Fund


$10,000

$10,383



Fidelity Freedom 2070 Composite Index&#x2120;


$10,000

$10,441



S&amp;P 500&#xae; Index


$10,000

$10,380



&#160;

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000250724_LG_ClassMember_2YR" id="ixv-37058">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2070 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250724_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212320"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250724_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212321"
      unitRef="usd">10383</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250724_LG_1_AdditionalIndexMember_2YR"
      id="ixv-37071">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2070 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000250724_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212322"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250724_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212323"
      unitRef="usd">10441</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000250724_LG_2_AdditionalIndexMember_2YR"
      id="ixv-37084">&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="C000250724_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212324"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000250724_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212325"
      unitRef="usd">10380</oef:AccmVal>
    <oef:AddlFundStatisticsTextBlock contextRef="C000250724_ClassMember" id="ixv-37119">&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;$&lt;/span&gt;5,450,722&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;22&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000250724_InstantMember"
      decimals="0"
      id="ixv-212326"
      unitRef="usd">5450722</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000250724_InstantMember"
      decimals="INF"
      id="ixv-212327"
      unitRef="holding">22</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000250724_ClassMember"
      decimals="0"
      id="ixv-212328"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000250724_ClassMember"
      decimals="INF"
      id="ixv-212329"
      unitRef="pure">0.37</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000250724_ClassMember" id="ixv-37194">
&#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="C000250724_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212330"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212331"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212332"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212333"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000250724_ClassMember" id="ixv-37285">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

14.6


&#160;


Fidelity Series Blue Chip Growth Fund

12.0


&#160;


Fidelity Series Emerging Markets Opportunities Fund

10.4


&#160;


Fidelity Series Large Cap Growth Index Fund

7.7


&#160;


Fidelity Series International Growth Fund

7.2


&#160;


Fidelity Series Overseas Fund

7.1


&#160;


Fidelity Series International Value Fund

7.1


&#160;


Fidelity Series Large Cap Stock Fund

7.1


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Value Discovery Fund

5.3


&#160;


&#160;

85.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000250724_TH_0_Member"
      decimals="INF"
      id="ixv-212334"
      unitRef="pure">0.146</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_1_Member"
      decimals="INF"
      id="ixv-212335"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_2_Member"
      decimals="INF"
      id="ixv-212336"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_3_Member"
      decimals="INF"
      id="ixv-212337"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_4_Member"
      decimals="INF"
      id="ixv-212338"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_5_Member"
      decimals="INF"
      id="ixv-212339"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_6_Member"
      decimals="INF"
      id="ixv-212340"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_7_Member"
      decimals="INF"
      id="ixv-212341"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_8_Member"
      decimals="INF"
      id="ixv-212342"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000250724_TH_9_Member"
      decimals="INF"
      id="ixv-212343"
      unitRef="pure">0.053</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-37456">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157961_ClassMember" id="ixv-37468">Fidelity Freedom&#xae; Index 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157961_ClassMember" id="ixv-37471">Fidelity Freedom&#xae; Index 2010 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157961_ClassMember" id="ixv-37475">FFWTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157961_ClassMember" id="ixv-37494">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157961_ClassMember" id="ixv-37496">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157961_ClassMember" id="ixv-37501">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="C000157961_ClassMember" id="ixv-37503">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157961_ClassMember" id="ixv-37506">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157961_ClassMember" id="ixv-37509">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157961_ClassMember" id="ixv-37516">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157961_ClassMember"
      decimals="0"
      id="ixv-212344"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157961_ClassMember"
      decimals="INF"
      id="ixv-212345"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157961_ClassMember" id="ixv-37558">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157961_ClassMember" id="ixv-37582">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,930,679


$5,295,229


$5,644,358


$5,897,972


$5,978,853


$7,005,296


$7,029,611


$6,690,547


$7,189,757


$7,596,227



Fidelity Freedom Index 2010 Composite Index&#x2120;


$5,000,000

$4,932,632


$5,296,656


$5,654,599


$5,913,861


$5,997,262


$7,038,859


$7,078,616


$6,735,156


$7,246,494


$7,654,991



Bloomberg U.S. Aggregate Bond Index


$5,000,000

$5,192,697


$5,215,571


$5,278,300


$5,514,810


$6,007,488


$6,050,158


$5,798,950


$5,521,569


$5,615,321


$5,889,326



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157961_LG_ClassMember_11YR" id="ixv-37601">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157961_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-212346"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157961_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-212347"
      unitRef="usd">4930679</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157961_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212348"
      unitRef="usd">5295229</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157961_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212349"
      unitRef="usd">5644358</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157961_ClassMember_AsOf_2019"
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      id="ixv-212350"
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      contextRef="C000157961_ClassMember_AsOf_2020"
      decimals="0"
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      decimals="0"
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    <oef:AccmVal
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      contextRef="C000157961_ClassMember_AsOf_2023"
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      contextRef="C000157961_ClassMember_AsOf_2024"
      decimals="0"
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    <oef:AccmVal
      contextRef="C000157961_ClassMember_AsOf_2025"
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    <oef:LineGraphAndTableMeasureName
      contextRef="C000157961_LG_1_AdditionalIndexMember_11YR"
      id="ixv-37650">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212357"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
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      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2018"
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      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2019"
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      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2020"
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      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2021"
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    <oef:AccmVal
      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212364"
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    <oef:AccmVal
      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2023"
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      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2024"
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      contextRef="C000157961_1_AdditionalIndexMember_AsOf_2025"
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      id="ixv-212367"
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    <oef:LineGraphAndTableMeasureName
      contextRef="C000157961_LG_2_AdditionalIndexMember_11YR"
      id="ixv-37699">&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="C000157961_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212368"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157961_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212369"
      unitRef="usd">5192697</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157961_2_AdditionalIndexMember_AsOf_2017"
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    <oef:AccmVal
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      id="ixv-212371"
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      contextRef="C000157961_2_AdditionalIndexMember_AsOf_2019"
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    <oef:AccmVal
      contextRef="C000157961_2_AdditionalIndexMember_AsOf_2020"
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      contextRef="C000157961_2_AdditionalIndexMember_AsOf_2022"
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      id="ixv-212375"
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      id="ixv-212376"
      unitRef="usd">5521569</oef:AccmVal>
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      contextRef="C000157961_2_AdditionalIndexMember_AsOf_2024"
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      id="ixv-212377"
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      id="ixv-212378"
      unitRef="usd">5889326</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157961_ClassMember" id="ixv-37797">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

5.65%

4.90%

4.37%


Fidelity Freedom Index 2010 Composite Index&#x2120;

5.64%


5.00%


4.45%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.69%




A&#160; &#160;From June 24, 2015

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="C000157961_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212379"
      unitRef="pure">0.0565</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157961_NoLoadClassMember_5YR"
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      id="ixv-212380"
      unitRef="pure">0.0490</oef:AvgAnnlRtrPct>
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      contextRef="C000157961_NoLoadClassMember_2024-04-01_2025-03-31"
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      id="ixv-212381"
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      id="ixv-212382"
      unitRef="pure">0.0564</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157961_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212383"
      unitRef="pure">0.0500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157961_0_AdditionalIndexMember_LOC"
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      id="ixv-212384"
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    <oef:AvgAnnlRtrPct
      contextRef="C000157961_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212385"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157961_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212386"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157961_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212387"
      unitRef="pure">0.0169</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157961_ClassMember" id="ixv-37867">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157961_ClassMember" id="ixv-37884">&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="C000157961_ClassMember" id="ixv-37888">&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="C000157961_ClassMember" id="ixv-37894">&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;$&lt;/span&gt;715,752,160&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;8&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;601,571&lt;/div&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;17&lt;span 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="C000157961_InstantMember"
      decimals="0"
      id="ixv-212388"
      unitRef="usd">715752160</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157961_InstantMember"
      decimals="INF"
      id="ixv-212389"
      unitRef="holding">8</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157961_ClassMember"
      decimals="0"
      id="ixv-212390"
      unitRef="usd">601571</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157961_ClassMember"
      decimals="INF"
      id="ixv-212391"
      unitRef="pure">0.17</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157961_ClassMember" id="ixv-37969">
&#160;
&#160;
&#160;
&#160;
Bond Funds

66.4


Domestic Equity Funds

15.2


International Equity Funds

10.1


Short-Term Funds

8.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 66.4&#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 - 15.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 10.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 8.3&#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="C000157961_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212392"
      unitRef="pure">0.664</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212393"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212394"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-212395"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212396"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157961_ClassMember" id="ixv-38073">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

40.5


&#160;


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

16.0


&#160;


Fidelity Series Total Market Index Fund

15.2


&#160;


Fidelity Series Global ex U.S. Index Fund

10.1


&#160;


Fidelity Series Treasury Bill Index Fund

8.3


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.2


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.8


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157961_TH_0_Member"
      decimals="INF"
      id="ixv-212397"
      unitRef="pure">0.405</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_TH_1_Member"
      decimals="INF"
      id="ixv-212398"
      unitRef="pure">0.160</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_TH_2_Member"
      decimals="INF"
      id="ixv-212399"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_TH_3_Member"
      decimals="INF"
      id="ixv-212400"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_TH_4_Member"
      decimals="INF"
      id="ixv-212401"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_TH_5_Member"
      decimals="INF"
      id="ixv-212402"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_TH_6_Member"
      decimals="INF"
      id="ixv-212403"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157961_TH_7_Member"
      decimals="INF"
      id="ixv-212404"
      unitRef="pure">0.018</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-38224">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177882_ClassMember" id="ixv-38236">Fidelity Flex&#xae; Freedom Blend 2010 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177882_ClassMember" id="ixv-38239">Fidelity Flex&#xae; Freedom Blend 2010 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177882_ClassMember" id="ixv-38243">FISNX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177882_ClassMember" id="ixv-38262">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2010 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177882_ClassMember" id="ixv-38264">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177882_ClassMember" id="ixv-38269">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177882_ClassMember" id="ixv-38271">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177882_ClassMember" id="ixv-38274">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177882_ClassMember" id="ixv-38277">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177882_ClassMember" id="ixv-38284">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2010 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177882_ClassMember"
      decimals="0"
      id="ixv-212405"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177882_ClassMember"
      decimals="INF"
      id="ixv-212406"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177882_ClassMember" id="ixv-38336">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177882_ClassMember" id="ixv-38367">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2010 Fund


$10,000

$10,520


$10,877


$10,841


$13,110


$13,113


$12,490


$13,438


$14,235



Fidelity Freedom 2010 Composite Index&#x2120;


$10,000

$10,436


$10,922


$11,076


$13,000


$13,073


$12,439


$13,383


$14,138



Bloomberg U.S. Aggregate Bond Index


$10,000

$9,960


$10,406


$11,336


$11,416


$10,942


$10,419


$10,596


$11,113



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177882_LG_ClassMember_9YR" id="ixv-38386">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2010 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212407"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212408"
      unitRef="usd">10520</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212409"
      unitRef="usd">10877</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212410"
      unitRef="usd">10841</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212411"
      unitRef="usd">13110</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212412"
      unitRef="usd">13113</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212413"
      unitRef="usd">12490</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212414"
      unitRef="usd">13438</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212415"
      unitRef="usd">14235</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177882_LG_1_AdditionalIndexMember_9YR"
      id="ixv-38427">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2010 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212416"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212417"
      unitRef="usd">10436</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212418"
      unitRef="usd">10922</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212419"
      unitRef="usd">11076</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212420"
      unitRef="usd">13000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212421"
      unitRef="usd">13073</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212422"
      unitRef="usd">12439</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212423"
      unitRef="usd">13383</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212424"
      unitRef="usd">14138</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177882_LG_2_AdditionalIndexMember_9YR"
      id="ixv-38468">&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="C000177882_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212425"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212426"
      unitRef="usd">9960</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212427"
      unitRef="usd">10406</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212428"
      unitRef="usd">11336</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212429"
      unitRef="usd">11416</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212430"
      unitRef="usd">10942</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212431"
      unitRef="usd">10419</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212432"
      unitRef="usd">10596</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177882_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212433"
      unitRef="usd">11113</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177882_ClassMember" id="ixv-38552">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2010 Fund

5.93%

5.60%

4.62%


Fidelity Freedom 2010 Composite Index&#x2120;

5.64%


5.00%


4.53%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.36%




A&#160; &#160;From June 8, 2017

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="C000177882_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212434"
      unitRef="pure">0.0593</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212435"
      unitRef="pure">0.0560</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212436"
      unitRef="pure">0.0462</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212437"
      unitRef="pure">0.0564</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212438"
      unitRef="pure">0.0500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212439"
      unitRef="pure">0.0453</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212440"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212441"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177882_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212442"
      unitRef="pure">0.0136</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177882_ClassMember" id="ixv-38622">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177882_ClassMember" id="ixv-38639">&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="C000177882_ClassMember" id="ixv-38643">&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="C000177882_ClassMember" id="ixv-38649">&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;$&lt;/span&gt;2,550,080&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;34&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177882_InstantMember"
      decimals="0"
      id="ixv-212443"
      unitRef="usd">2550080</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177882_InstantMember"
      decimals="INF"
      id="ixv-212444"
      unitRef="holding">34</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177882_ClassMember"
      decimals="0"
      id="ixv-212445"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177882_ClassMember"
      decimals="INF"
      id="ixv-212446"
      unitRef="pure">0.36</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177882_ClassMember" id="ixv-38724">
&#160;
&#160;
&#160;
&#160;
Bond Funds

68.7


International Equity Funds

15.4


Domestic Equity Funds

12.9


Short-Term Funds

3.0


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 68.7&#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 - 15.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 12.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 3.0&#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="C000177882_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212447"
      unitRef="pure">0.687</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212448"
      unitRef="pure">0.154</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212449"
      unitRef="pure">0.129</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-212450"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212451"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177882_ClassMember" id="ixv-38828">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


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

16.6


&#160;


Fidelity Series Government Bond Index Fund

12.9


&#160;


Fidelity Series Investment Grade Bond Fund

12.3


&#160;


Fidelity Series Corporate Bond Fund

8.0


&#160;


Fidelity Series Investment Grade Securitized Fund

7.7


&#160;


Fidelity Series International Developed Markets Bond Index Fund

5.1


&#160;


Fidelity Series Emerging Markets Opportunities Fund

4.5


&#160;


Fidelity Series Large Cap Value Index Fund

3.6


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.4


&#160;


Fidelity Series Blue Chip Growth Fund

3.0


&#160;


&#160;

77.1

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177882_TH_0_Member"
      decimals="INF"
      id="ixv-212452"
      unitRef="pure">0.166</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_1_Member"
      decimals="INF"
      id="ixv-212453"
      unitRef="pure">0.129</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_2_Member"
      decimals="INF"
      id="ixv-212454"
      unitRef="pure">0.123</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_3_Member"
      decimals="INF"
      id="ixv-212455"
      unitRef="pure">0.080</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_4_Member"
      decimals="INF"
      id="ixv-212456"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_5_Member"
      decimals="INF"
      id="ixv-212457"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_6_Member"
      decimals="INF"
      id="ixv-212458"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_7_Member"
      decimals="INF"
      id="ixv-212459"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_8_Member"
      decimals="INF"
      id="ixv-212460"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177882_TH_9_Member"
      decimals="INF"
      id="ixv-212461"
      unitRef="pure">0.030</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-38999">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079285_ClassMember" id="ixv-39011">Fidelity Freedom&#xae; Index 2030 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079285_ClassMember" id="ixv-39014">Fidelity Freedom&#xae; Index 2030 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079285_ClassMember" id="ixv-39018">FXIFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079285_ClassMember" id="ixv-39037">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2030 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079285_ClassMember" id="ixv-39039">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079285_ClassMember" id="ixv-39044">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="C000079285_ClassMember" id="ixv-39046">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079285_ClassMember" id="ixv-39049">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079285_ClassMember" id="ixv-39052">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079285_ClassMember" id="ixv-39059">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079285_ClassMember"
      decimals="0"
      id="ixv-212462"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079285_ClassMember"
      decimals="INF"
      id="ixv-212463"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079285_ClassMember" id="ixv-39101">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079285_ClassMember" id="ixv-39125">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,756


$11,031


$12,283


$12,862


$12,298


$16,648


$17,058


$15,924


$18,061


$19,135



Fidelity Freedom Index 2030 Composite Index&#x2120;


$10,000

$9,773


$11,057


$12,321


$12,936


$12,380


$16,785


$17,267


$16,098


$18,297


$19,379



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079285_LG_ClassMember_11YR" id="ixv-39144">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-212464"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-212465"
      unitRef="usd">9756</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212466"
      unitRef="usd">11031</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212467"
      unitRef="usd">12283</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212468"
      unitRef="usd">12862</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212469"
      unitRef="usd">12298</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212470"
      unitRef="usd">16648</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212471"
      unitRef="usd">17058</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212472"
      unitRef="usd">15924</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212473"
      unitRef="usd">18061</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212474"
      unitRef="usd">19135</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079285_LG_1_AdditionalIndexMember_11YR"
      id="ixv-39193">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2030 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212475"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212476"
      unitRef="usd">9773</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212477"
      unitRef="usd">11057</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212478"
      unitRef="usd">12321</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212479"
      unitRef="usd">12936</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212480"
      unitRef="usd">12380</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212481"
      unitRef="usd">16785</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212482"
      unitRef="usd">17267</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212483"
      unitRef="usd">16098</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212484"
      unitRef="usd">18297</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212485"
      unitRef="usd">19379</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079285_LG_2_AdditionalIndexMember_11YR"
      id="ixv-39242">&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="C000079285_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212486"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212487"
      unitRef="usd">10178</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212488"
      unitRef="usd">11926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212489"
      unitRef="usd">13595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212490"
      unitRef="usd">14886</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212491"
      unitRef="usd">13847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212492"
      unitRef="usd">21650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212493"
      unitRef="usd">25038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212494"
      unitRef="usd">23103</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212495"
      unitRef="usd">30006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079285_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212496"
      unitRef="usd">32482</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079285_ClassMember" id="ixv-39340">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

5.95%

9.24%

6.70%


Fidelity Freedom Index 2030 Composite Index&#x2120;

5.91%


9.38%


6.84%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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="C000079285_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212497"
      unitRef="pure">0.0595</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212498"
      unitRef="pure">0.0924</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-212499"
      unitRef="pure">0.0670</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212500"
      unitRef="pure">0.0591</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212501"
      unitRef="pure">0.0938</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-212502"
      unitRef="pure">0.0684</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212503"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212504"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079285_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-212505"
      unitRef="pure">0.1250</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079285_ClassMember" id="ixv-39417">&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="C000079285_ClassMember" id="ixv-39421">&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="C000079285_ClassMember" id="ixv-39427">&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;$&lt;/span&gt;22,276,385,405&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,374,719&lt;/div&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;14&lt;span 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="C000079285_InstantMember"
      decimals="0"
      id="ixv-212506"
      unitRef="usd">22276385405</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000079285_InstantMember"
      decimals="INF"
      id="ixv-212507"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000079285_ClassMember"
      decimals="0"
      id="ixv-212508"
      unitRef="usd">16374719</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000079285_ClassMember"
      decimals="INF"
      id="ixv-212509"
      unitRef="pure">0.14</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000079285_ClassMember" id="ixv-39502">
&#160;
&#160;
&#160;
&#160;
Bond Funds

41.5


Domestic Equity Funds

35.2


International Equity Funds

23.3


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 41.5&#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 - 35.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 23.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079285_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212510"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212511"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212512"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212513"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000079285_ClassMember" id="ixv-39593">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

35.2


&#160;


Fidelity Series Bond Index Fund

26.6


&#160;


Fidelity Series Global ex U.S. Index Fund

23.3


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

5.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079285_TH_0_Member"
      decimals="INF"
      id="ixv-212514"
      unitRef="pure">0.352</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_TH_1_Member"
      decimals="INF"
      id="ixv-212515"
      unitRef="pure">0.266</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_TH_2_Member"
      decimals="INF"
      id="ixv-212516"
      unitRef="pure">0.233</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_TH_3_Member"
      decimals="INF"
      id="ixv-212517"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_TH_4_Member"
      decimals="INF"
      id="ixv-212518"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079285_TH_5_Member"
      decimals="INF"
      id="ixv-212519"
      unitRef="pure">0.044</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-39724">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177878_ClassMember" id="ixv-39736">Fidelity Flex&#xae; Freedom Blend 2050 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177878_ClassMember" id="ixv-39739">Fidelity Flex&#xae; Freedom Blend 2050 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177878_ClassMember" id="ixv-39743">FYLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177878_ClassMember" id="ixv-39762">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2050 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177878_ClassMember" id="ixv-39764">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177878_ClassMember" id="ixv-39769">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177878_ClassMember" id="ixv-39771">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177878_ClassMember" id="ixv-39774">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177878_ClassMember" id="ixv-39777">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177878_ClassMember" id="ixv-39784">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2050 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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
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      id="ixv-212520"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177878_ClassMember"
      decimals="INF"
      id="ixv-212521"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177878_ClassMember" id="ixv-39836">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177878_ClassMember" id="ixv-39867">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2050 Fund


$10,000

$10,989


$11,269


$10,114


$15,828


$16,443


$15,355


$18,649


$19,743



Fidelity Freedom 2050 Composite Index&#x2120;


$10,000

$10,910


$11,449


$10,443


$15,666


$16,507


$15,295


$18,375


$19,579



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177878_LG_ClassMember_9YR" id="ixv-39886">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2050 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212522"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212523"
      unitRef="usd">10989</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212524"
      unitRef="usd">11269</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212525"
      unitRef="usd">10114</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212526"
      unitRef="usd">15828</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212527"
      unitRef="usd">16443</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212528"
      unitRef="usd">15355</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212529"
      unitRef="usd">18649</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212530"
      unitRef="usd">19743</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177878_LG_1_AdditionalIndexMember_9YR"
      id="ixv-39927">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2050 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212531"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212532"
      unitRef="usd">10910</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212533"
      unitRef="usd">11449</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212534"
      unitRef="usd">10443</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212535"
      unitRef="usd">15666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212536"
      unitRef="usd">16507</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212537"
      unitRef="usd">15295</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212538"
      unitRef="usd">18375</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212539"
      unitRef="usd">19579</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177878_LG_2_AdditionalIndexMember_9YR"
      id="ixv-39968">&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="C000177878_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212540"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212541"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212542"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212543"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212544"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212545"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212546"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212547"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177878_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212548"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177878_ClassMember" id="ixv-40052">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2050 Fund

5.87%

14.31%

9.09%


Fidelity Freedom 2050 Composite Index&#x2120;

6.55%


13.39%


8.98%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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="C000177878_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212549"
      unitRef="pure">0.0587</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212550"
      unitRef="pure">0.1431</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212551"
      unitRef="pure">0.0909</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212552"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212553"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212554"
      unitRef="pure">0.0898</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212555"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212556"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177878_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212557"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177878_ClassMember" id="ixv-40121">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177878_ClassMember" id="ixv-40138">&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="C000177878_ClassMember" id="ixv-40142">&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="C000177878_ClassMember" id="ixv-40148">&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;$&lt;/span&gt;53,502,693&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177878_InstantMember"
      decimals="0"
      id="ixv-212558"
      unitRef="usd">53502693</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177878_InstantMember"
      decimals="INF"
      id="ixv-212559"
      unitRef="holding">23</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      decimals="0"
      id="ixv-212560"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177878_ClassMember"
      decimals="INF"
      id="ixv-212561"
      unitRef="pure">0.38</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177878_ClassMember" id="ixv-40223">
&#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="C000177878_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212562"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212563"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212564"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212565"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177878_ClassMember" id="ixv-40314">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

14.6


&#160;


Fidelity Series Blue Chip Growth Fund

12.0


&#160;


Fidelity Series Emerging Markets Opportunities Fund

10.4


&#160;


Fidelity Series Large Cap Growth Index Fund

7.7


&#160;


Fidelity Series International Growth Fund

7.2


&#160;


Fidelity Series Overseas Fund

7.1


&#160;


Fidelity Series International Value Fund

7.1


&#160;


Fidelity Series Large Cap Stock Fund

7.1


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Value Discovery Fund

5.3


&#160;


&#160;

85.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177878_TH_0_Member"
      decimals="INF"
      id="ixv-212566"
      unitRef="pure">0.146</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_1_Member"
      decimals="INF"
      id="ixv-212567"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_2_Member"
      decimals="INF"
      id="ixv-212568"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_3_Member"
      decimals="INF"
      id="ixv-212569"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_4_Member"
      decimals="INF"
      id="ixv-212570"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_5_Member"
      decimals="INF"
      id="ixv-212571"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_6_Member"
      decimals="INF"
      id="ixv-212572"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_7_Member"
      decimals="INF"
      id="ixv-212573"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_8_Member"
      decimals="INF"
      id="ixv-212574"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177878_TH_9_Member"
      decimals="INF"
      id="ixv-212575"
      unitRef="pure">0.053</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-40485">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220390_ClassMember" id="ixv-40489">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220390_ClassMember" id="ixv-40500">Fidelity Freedom&#xae; Index 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220390_ClassMember" id="ixv-40503">Fidelity Freedom&#xae; Index 2055 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220390_ClassMember" id="ixv-40507">FTYPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220390_ClassMember" id="ixv-40526">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220390_ClassMember" id="ixv-40528">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220390_ClassMember" id="ixv-40533">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220390_ClassMember" id="ixv-40535">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220390_ClassMember" id="ixv-40538">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220390_ClassMember" id="ixv-40541">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220390_ClassMember" id="ixv-40548">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220390_ClassMember"
      decimals="0"
      id="ixv-212576"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220390_ClassMember"
      decimals="INF"
      id="ixv-212577"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220390_ClassMember" id="ixv-40590">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220390_ClassMember" id="ixv-40614">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,569,376,202


$2,697,690,481


$2,506,076,076


$3,005,115,168


$3,206,346,184



Fidelity Freedom Index 2055 Composite Index&#x2120;


$2,000,000,000

$2,564,930,037


$2,702,697,201


$2,504,186,394


$3,008,574,171


$3,205,600,618



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220390_LG_ClassMember_6YR" id="ixv-40633">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220390_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212578"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212579"
      unitRef="usd">2569376202</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212580"
      unitRef="usd">2697690481</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212581"
      unitRef="usd">2506076076</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212582"
      unitRef="usd">3005115168</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212583"
      unitRef="usd">3206346184</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220390_LG_1_AdditionalIndexMember_6YR"
      id="ixv-40662">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220390_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212584"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212585"
      unitRef="usd">2564930037</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212586"
      unitRef="usd">2702697201</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212587"
      unitRef="usd">2504186394</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212588"
      unitRef="usd">3008574171</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212589"
      unitRef="usd">3205600618</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220390_LG_2_AdditionalIndexMember_6YR"
      id="ixv-40691">&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="C000220390_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212590"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212591"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212592"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212593"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212594"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220390_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212595"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220390_ClassMember" id="ixv-40754">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.70%

10.40%


Fidelity Freedom Index 2055 Composite Index&#x2120;

6.55%


10.40%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220390_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212596"
      unitRef="pure">0.0670</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220390_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212597"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220390_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212598"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220390_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212599"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220390_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212600"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220390_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212601"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220390_ClassMember" id="ixv-40809">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220390_ClassMember" id="ixv-40826">&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="C000220390_ClassMember" id="ixv-40830">&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="C000220390_ClassMember" id="ixv-40836">&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;$&lt;/span&gt;14,977,278,085&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,137,869&lt;/div&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;12&lt;span 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="C000220390_InstantMember"
      decimals="0"
      id="ixv-212602"
      unitRef="usd">14977278085</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220390_InstantMember"
      decimals="INF"
      id="ixv-212603"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220390_ClassMember"
      decimals="0"
      id="ixv-212604"
      unitRef="usd">10137869</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220390_ClassMember"
      decimals="INF"
      id="ixv-212605"
      unitRef="pure">0.12</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220390_ClassMember" id="ixv-40911">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000220390_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212606"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220390_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212607"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220390_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212608"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220390_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212609"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220390_ClassMember" id="ixv-41002">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220390_TH_0_Member"
      decimals="INF"
      id="ixv-212610"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220390_TH_1_Member"
      decimals="INF"
      id="ixv-212611"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220390_TH_2_Member"
      decimals="INF"
      id="ixv-212612"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220390_TH_3_Member"
      decimals="INF"
      id="ixv-212613"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220390_TH_4_Member"
      decimals="INF"
      id="ixv-212614"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220390_ClassMember" id="ixv-41077">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220390_ClassMember" id="ixv-41083">&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;1-800-544-3455&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="C000220390_ClassMember" id="ixv-41087">&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="C000220390_ClassMember" id="ixv-41090">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220390_ClassMember" id="ixv-41094">&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="C000220390_ClassMember" id="ixv-41105">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-41170">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000157959_ClassMember" id="ixv-41174">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000157959_ClassMember" id="ixv-41185">Fidelity Freedom&#xae; Index Income Fund</oef:FundName>
    <oef:ClassName contextRef="C000157959_ClassMember" id="ixv-41188">Fidelity Freedom&#xae; Index Income Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157959_ClassMember" id="ixv-41192">FFGZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157959_ClassMember" id="ixv-41211">This annual shareholder report contains information about Fidelity Freedom&#xae; Index Income Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157959_ClassMember" id="ixv-41213">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157959_ClassMember" id="ixv-41218">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="C000157959_ClassMember" id="ixv-41220">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157959_ClassMember" id="ixv-41223">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157959_ClassMember" id="ixv-41226">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157959_ClassMember" id="ixv-41233">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157959_ClassMember"
      decimals="0"
      id="ixv-212615"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157959_ClassMember"
      decimals="INF"
      id="ixv-212616"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157959_ClassMember" id="ixv-41275">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157959_ClassMember" id="ixv-41299">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$5,012,775


$5,213,349


$5,425,419


$5,651,288


$5,876,240


$6,445,023


$6,416,978


$6,168,267


$6,540,504


$6,903,194



Fidelity Freedom Index Income Composite Index&#x2120;


$5,000,000

$5,012,266


$5,219,190


$5,437,563


$5,668,531


$5,890,571


$6,480,034


$6,461,063


$6,214,514


$6,596,289


$6,961,617



Bloomberg U.S. Aggregate Bond Index


$5,000,000

$5,192,697


$5,215,571


$5,278,300


$5,514,810


$6,007,488


$6,050,158


$5,798,950


$5,521,569


$5,615,321


$5,889,326



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157959_LG_ClassMember_11YR" id="ixv-41318">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-212617"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-212618"
      unitRef="usd">5012775</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212619"
      unitRef="usd">5213349</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212620"
      unitRef="usd">5425419</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212621"
      unitRef="usd">5651288</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212622"
      unitRef="usd">5876240</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212623"
      unitRef="usd">6445023</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212624"
      unitRef="usd">6416978</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212625"
      unitRef="usd">6168267</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212626"
      unitRef="usd">6540504</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212627"
      unitRef="usd">6903194</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157959_LG_1_AdditionalIndexMember_11YR"
      id="ixv-41367">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index Income Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212628"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212629"
      unitRef="usd">5012266</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212630"
      unitRef="usd">5219190</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212631"
      unitRef="usd">5437563</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212632"
      unitRef="usd">5668531</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212633"
      unitRef="usd">5890571</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212634"
      unitRef="usd">6480034</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212635"
      unitRef="usd">6461063</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212636"
      unitRef="usd">6214514</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212637"
      unitRef="usd">6596289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212638"
      unitRef="usd">6961617</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157959_LG_2_AdditionalIndexMember_11YR"
      id="ixv-41416">&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="C000157959_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212639"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212640"
      unitRef="usd">5192697</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212641"
      unitRef="usd">5215571</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212642"
      unitRef="usd">5278300</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212643"
      unitRef="usd">5514810</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212644"
      unitRef="usd">6007488</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212645"
      unitRef="usd">6050158</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212646"
      unitRef="usd">5798950</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212647"
      unitRef="usd">5521569</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212648"
      unitRef="usd">5615321</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157959_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212649"
      unitRef="usd">5889326</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157959_ClassMember" id="ixv-41514">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

5.55%

3.27%

3.35%


Fidelity Freedom Index Income Composite Index&#x2120;

5.54%


3.40%


3.44%


Bloomberg U.S. Aggregate Bond Index

4.88%


-0.40%


1.69%




A&#160; &#160;From June 24, 2015

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="C000157959_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212650"
      unitRef="pure">0.0555</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212651"
      unitRef="pure">0.0327</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212652"
      unitRef="pure">0.0335</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212653"
      unitRef="pure">0.0554</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212654"
      unitRef="pure">0.0340</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212655"
      unitRef="pure">0.0344</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212656"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212657"
      unitRef="pure">-0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157959_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212658"
      unitRef="pure">0.0169</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157959_ClassMember" id="ixv-41584">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157959_ClassMember" id="ixv-41601">&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="C000157959_ClassMember" id="ixv-41605">&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="C000157959_ClassMember" id="ixv-41611">&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;$&lt;/span&gt;1,694,169,632&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;7&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,195,611&lt;/div&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;18&lt;span 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="C000157959_InstantMember"
      decimals="0"
      id="ixv-212659"
      unitRef="usd">1694169632</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157959_InstantMember"
      decimals="INF"
      id="ixv-212660"
      unitRef="holding">7</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157959_ClassMember"
      decimals="0"
      id="ixv-212661"
      unitRef="usd">1195611</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157959_ClassMember"
      decimals="INF"
      id="ixv-212662"
      unitRef="pure">0.18</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157959_ClassMember" id="ixv-41686">
&#160;
&#160;
&#160;
&#160;
Bond Funds

70.9


Domestic Equity Funds

11.5


Short-Term Funds

10.0


International Equity Funds

7.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 70.9&#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 - 11.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Funds - 10.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 7.6&#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="C000157959_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212663"
      unitRef="pure">0.709</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212664"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_AA_ShortTermFunds_Member"
      decimals="INF"
      id="ixv-212665"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212666"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212667"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157959_ClassMember" id="ixv-41790">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Bond Index Fund

43.1


&#160;


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

19.9


&#160;


Fidelity Series Total Market Index Fund

11.5


&#160;


Fidelity Series Treasury Bill Index Fund

10.0


&#160;


Fidelity Series Global ex U.S. Index Fund

7.6


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157959_TH_0_Member"
      decimals="INF"
      id="ixv-212668"
      unitRef="pure">0.431</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_TH_1_Member"
      decimals="INF"
      id="ixv-212669"
      unitRef="pure">0.199</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_TH_2_Member"
      decimals="INF"
      id="ixv-212670"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_TH_3_Member"
      decimals="INF"
      id="ixv-212671"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_TH_4_Member"
      decimals="INF"
      id="ixv-212672"
      unitRef="pure">0.076</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_TH_5_Member"
      decimals="INF"
      id="ixv-212673"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157959_TH_6_Member"
      decimals="INF"
      id="ixv-212674"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000157959_ClassMember" id="ixv-41885">
&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;Fidelity Freedom&#xae; Index 2005 Fund merged into Fidelity Freedom&#xae; Index Income Fund on June 14, 2024.&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="C000157959_ClassMember" id="ixv-41891">&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="C000157959_ClassMember" id="ixv-41895">&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="C000157959_ClassMember" id="ixv-41898">&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="C000157959_ClassMember" id="ixv-41902">&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-41968">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220386_ClassMember" id="ixv-41972">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220386_ClassMember" id="ixv-41983">Fidelity Freedom&#xae; Index 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220386_ClassMember" id="ixv-41986">Fidelity Freedom&#xae; Index 2025 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220386_ClassMember" id="ixv-41990">FLIPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220386_ClassMember" id="ixv-42009">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220386_ClassMember" id="ixv-42011">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220386_ClassMember" id="ixv-42016">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220386_ClassMember" id="ixv-42018">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220386_ClassMember" id="ixv-42021">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220386_ClassMember" id="ixv-42024">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220386_ClassMember" id="ixv-42031">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220386_ClassMember"
      decimals="0"
      id="ixv-212675"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220386_ClassMember"
      decimals="INF"
      id="ixv-212676"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220386_ClassMember" id="ixv-42073">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220386_ClassMember" id="ixv-42097">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,338,829,920


$2,385,070,966


$2,227,860,847


$2,492,946,417


$2,640,472,021



Fidelity Freedom Index 2025 Composite Index&#x2120;


$2,000,000,000

$2,338,901,213


$2,391,485,370


$2,229,519,994


$2,499,688,968


$2,644,804,055



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220386_LG_ClassMember_6YR" id="ixv-42116">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220386_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212677"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212678"
      unitRef="usd">2338829920</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212679"
      unitRef="usd">2385070966</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212680"
      unitRef="usd">2227860847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212681"
      unitRef="usd">2492946417</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212682"
      unitRef="usd">2640472021</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220386_LG_1_AdditionalIndexMember_6YR"
      id="ixv-42145">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220386_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212683"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212684"
      unitRef="usd">2338901213</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212685"
      unitRef="usd">2391485370</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212686"
      unitRef="usd">2229519994</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212687"
      unitRef="usd">2499688968</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212688"
      unitRef="usd">2644804055</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220386_LG_2_AdditionalIndexMember_6YR"
      id="ixv-42174">&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="C000220386_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212689"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212690"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212691"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212692"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212693"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220386_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212694"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220386_ClassMember" id="ixv-42237">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

5.92%

6.00%


Fidelity Freedom Index 2025 Composite Index&#x2120;

5.81%


6.03%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220386_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212695"
      unitRef="pure">0.0592</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220386_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212696"
      unitRef="pure">0.0600</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220386_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212697"
      unitRef="pure">0.0581</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220386_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212698"
      unitRef="pure">0.0603</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220386_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212699"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220386_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212700"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220386_ClassMember" id="ixv-42292">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220386_ClassMember" id="ixv-42309">&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="C000220386_ClassMember" id="ixv-42313">&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="C000220386_ClassMember" id="ixv-42319">&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;$&lt;/span&gt;13,994,954,502&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,898,228&lt;/div&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="C000220386_InstantMember"
      decimals="0"
      id="ixv-212701"
      unitRef="usd">13994954502</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220386_InstantMember"
      decimals="INF"
      id="ixv-212702"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220386_ClassMember"
      decimals="0"
      id="ixv-212703"
      unitRef="usd">10898228</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220386_ClassMember"
      decimals="INF"
      id="ixv-212704"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220386_ClassMember" id="ixv-42394">
&#160;
&#160;
&#160;
&#160;
Bond Funds

48.0


Domestic Equity Funds

31.3


International Equity Funds

20.7


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 48.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 31.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 20.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220386_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212705"
      unitRef="pure">0.480</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212706"
      unitRef="pure">0.313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212707"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212708"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220386_ClassMember" id="ixv-42485">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

31.3


&#160;


Fidelity Series Bond Index Fund

29.4


&#160;


Fidelity Series Global ex U.S. Index Fund

20.7


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

9.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220386_TH_0_Member"
      decimals="INF"
      id="ixv-212709"
      unitRef="pure">0.313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_TH_1_Member"
      decimals="INF"
      id="ixv-212710"
      unitRef="pure">0.294</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_TH_2_Member"
      decimals="INF"
      id="ixv-212711"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_TH_3_Member"
      decimals="INF"
      id="ixv-212712"
      unitRef="pure">0.098</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_TH_4_Member"
      decimals="INF"
      id="ixv-212713"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220386_TH_5_Member"
      decimals="INF"
      id="ixv-212714"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220386_ClassMember" id="ixv-42570">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220386_ClassMember" id="ixv-42576">&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;1-800-544-3455&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="C000220386_ClassMember" id="ixv-42580">&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="C000220386_ClassMember" id="ixv-42583">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220386_ClassMember" id="ixv-42587">&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="C000220386_ClassMember" id="ixv-42598">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-42663">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177885_ClassMember" id="ixv-42675">Fidelity Flex&#xae; Freedom Blend 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177885_ClassMember" id="ixv-42678">Fidelity Flex&#xae; Freedom Blend 2025 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177885_ClassMember" id="ixv-42682">FELSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177885_ClassMember" id="ixv-42701">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177885_ClassMember" id="ixv-42703">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177885_ClassMember" id="ixv-42708">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177885_ClassMember" id="ixv-42710">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177885_ClassMember" id="ixv-42713">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177885_ClassMember" id="ixv-42716">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177885_ClassMember" id="ixv-42723">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2025 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177885_ClassMember"
      decimals="0"
      id="ixv-212715"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177885_ClassMember"
      decimals="INF"
      id="ixv-212716"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177885_ClassMember" id="ixv-42775">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177885_ClassMember" id="ixv-42806">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2025 Fund


$10,000

$10,724


$11,076


$10,595


$14,349


$14,552


$13,605


$15,344


$16,201



Fidelity Freedom 2025 Composite Index&#x2120;


$10,000

$10,643


$11,172


$10,872


$14,200


$14,519


$13,536


$15,176


$16,057



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177885_LG_ClassMember_9YR" id="ixv-42825">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2025 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212717"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212718"
      unitRef="usd">10724</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212719"
      unitRef="usd">11076</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212720"
      unitRef="usd">10595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212721"
      unitRef="usd">14349</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212722"
      unitRef="usd">14552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212723"
      unitRef="usd">13605</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212724"
      unitRef="usd">15344</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212725"
      unitRef="usd">16201</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177885_LG_1_AdditionalIndexMember_9YR"
      id="ixv-42866">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212726"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212727"
      unitRef="usd">10643</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212728"
      unitRef="usd">11172</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212729"
      unitRef="usd">10872</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212730"
      unitRef="usd">14200</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212731"
      unitRef="usd">14519</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212732"
      unitRef="usd">13536</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212733"
      unitRef="usd">15176</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212734"
      unitRef="usd">16057</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177885_LG_2_AdditionalIndexMember_9YR"
      id="ixv-42907">&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="C000177885_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212735"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212736"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212737"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212738"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212739"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212740"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212741"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212742"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177885_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212743"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177885_ClassMember" id="ixv-42991">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2025 Fund

5.58%

8.86%

6.37%


Fidelity Freedom 2025 Composite Index&#x2120;

5.81%


8.11%


6.25%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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="C000177885_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212744"
      unitRef="pure">0.0558</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212745"
      unitRef="pure">0.0886</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212746"
      unitRef="pure">0.0637</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212747"
      unitRef="pure">0.0581</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212748"
      unitRef="pure">0.0811</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212749"
      unitRef="pure">0.0625</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212750"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212751"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177885_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212752"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177885_ClassMember" id="ixv-43060">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177885_ClassMember" id="ixv-43077">&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="C000177885_ClassMember" id="ixv-43081">&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="C000177885_ClassMember" id="ixv-43087">&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;$&lt;/span&gt;44,150,414&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;30&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177885_InstantMember"
      decimals="0"
      id="ixv-212753"
      unitRef="usd">44150414</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177885_InstantMember"
      decimals="INF"
      id="ixv-212754"
      unitRef="holding">30</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000177885_ClassMember"
      decimals="0"
      id="ixv-212755"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177885_ClassMember"
      decimals="INF"
      id="ixv-212756"
      unitRef="pure">0.33</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177885_ClassMember" id="ixv-43162">
&#160;
&#160;
&#160;
&#160;
Bond Funds

45.1


Domestic Equity Funds

28.8


International Equity Funds

26.1


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 - 28.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 26.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177885_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212757"
      unitRef="pure">0.451</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212758"
      unitRef="pure">0.288</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212759"
      unitRef="pure">0.261</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212760"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000177885_ClassMember" id="ixv-43253">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

10.8


&#160;


Fidelity Series Large Cap Value Index Fund

8.1


&#160;


Fidelity Series Government Bond Index Fund

7.2


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

6.9


&#160;


Fidelity Series Investment Grade Bond Fund

6.9


&#160;


Fidelity Series Emerging Markets Opportunities Fund

6.9


&#160;


Fidelity Series Blue Chip Growth Fund

6.7


&#160;


Fidelity Series Corporate Bond Fund

4.5


&#160;


Fidelity Series International Value Fund

4.3


&#160;


Fidelity Series Investment Grade Securitized Fund

4.3


&#160;


&#160;

66.6

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000177885_TH_0_Member"
      decimals="INF"
      id="ixv-212761"
      unitRef="pure">0.108</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_1_Member"
      decimals="INF"
      id="ixv-212762"
      unitRef="pure">0.081</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_2_Member"
      decimals="INF"
      id="ixv-212763"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_3_Member"
      decimals="INF"
      id="ixv-212764"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_4_Member"
      decimals="INF"
      id="ixv-212765"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_5_Member"
      decimals="INF"
      id="ixv-212766"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_6_Member"
      decimals="INF"
      id="ixv-212767"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_7_Member"
      decimals="INF"
      id="ixv-212768"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_8_Member"
      decimals="INF"
      id="ixv-212769"
      unitRef="pure">0.043</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177885_TH_9_Member"
      decimals="INF"
      id="ixv-212770"
      unitRef="pure">0.043</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-43424">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000220389_ClassMember" id="ixv-43428">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000220389_ClassMember" id="ixv-43439">Fidelity Freedom&#xae; Index 2040 Fund</oef:FundName>
    <oef:ClassName contextRef="C000220389_ClassMember" id="ixv-43442">Fidelity Freedom&#xae; Index 2040 Fund Premier Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000220389_ClassMember" id="ixv-43446">FPIPX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000220389_ClassMember" id="ixv-43465">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2040 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000220389_ClassMember" id="ixv-43467">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000220389_ClassMember" id="ixv-43472">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000220389_ClassMember" id="ixv-43474">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000220389_ClassMember" id="ixv-43477">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000220389_ClassMember" id="ixv-43480">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000220389_ClassMember" id="ixv-43487">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;5&lt;span style="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;0.05&lt;span 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="C000220389_ClassMember"
      decimals="0"
      id="ixv-212771"
      unitRef="usd">5</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000220389_ClassMember"
      decimals="INF"
      id="ixv-212772"
      unitRef="pure">0.0005</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000220389_ClassMember" id="ixv-43529">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000220389_ClassMember" id="ixv-43553">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2020 through March 31, 2025.
Initial investment of $2,000,000,000.
Premier Class


$2,000,000,000

$2,569,839,744


$2,696,838,733


$2,504,546,715


$2,980,616,147


$3,177,272,104



Fidelity Freedom Index 2040 Composite Index&#x2120;


$2,000,000,000

$2,564,930,037


$2,702,142,363


$2,502,592,539


$2,983,837,130


$3,176,624,452



S&amp;P 500&#xae; Index


$2,000,000,000

$2,637,300,930


$3,049,927,469


$2,814,215,574


$3,655,135,424


$3,956,745,967



&#160;

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000220389_LG_ClassMember_6YR" id="ixv-43572">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Premier Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220389_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212773"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212774"
      unitRef="usd">2569839744</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212775"
      unitRef="usd">2696838733</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212776"
      unitRef="usd">2504546715</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212777"
      unitRef="usd">2980616147</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212778"
      unitRef="usd">3177272104</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220389_LG_1_AdditionalIndexMember_6YR"
      id="ixv-43601">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2040 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000220389_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212779"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212780"
      unitRef="usd">2564930037</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212781"
      unitRef="usd">2702142363</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212782"
      unitRef="usd">2502592539</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212783"
      unitRef="usd">2983837130</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212784"
      unitRef="usd">3176624452</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000220389_LG_2_AdditionalIndexMember_6YR"
      id="ixv-43630">&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="C000220389_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212785"
      unitRef="usd">2000000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212786"
      unitRef="usd">2637300930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212787"
      unitRef="usd">3049927469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212788"
      unitRef="usd">2814215574</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212789"
      unitRef="usd">3655135424</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000220389_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212790"
      unitRef="usd">3956745967</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000220389_ClassMember" id="ixv-43693">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

Life of Fund&#160;A


Premier Class

6.60%

10.19%


Fidelity Freedom Index 2040 Composite Index&#x2120;

6.46%


10.19%


S&amp;P 500&#xae; Index

8.25%


15.38%




A&#160; &#160;From June 24, 2020

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="C000220389_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212791"
      unitRef="pure">0.0660</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220389_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212792"
      unitRef="pure">0.1019</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220389_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212793"
      unitRef="pure">0.0646</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220389_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212794"
      unitRef="pure">0.1019</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220389_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212795"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220389_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212796"
      unitRef="pure">0.1538</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000220389_ClassMember" id="ixv-43748">2020-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000220389_ClassMember" id="ixv-43765">&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="C000220389_ClassMember" id="ixv-43769">&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="C000220389_ClassMember" id="ixv-43775">&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;$&lt;/span&gt;23,680,015,185&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,584,331&lt;/div&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;13&lt;span 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="C000220389_InstantMember"
      decimals="0"
      id="ixv-212797"
      unitRef="usd">23680015185</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000220389_InstantMember"
      decimals="INF"
      id="ixv-212798"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000220389_ClassMember"
      decimals="0"
      id="ixv-212799"
      unitRef="usd">16584331</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000220389_ClassMember"
      decimals="INF"
      id="ixv-212800"
      unitRef="pure">0.13</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000220389_ClassMember" id="ixv-43850">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

49.6


International Equity Funds

32.8


Bond Funds

17.6


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 49.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 32.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 17.6&#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="C000220389_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212801"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220389_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212802"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220389_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212803"
      unitRef="pure">0.176</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220389_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212804"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000220389_ClassMember" id="ixv-43941">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

49.6


&#160;


Fidelity Series Global ex U.S. Index Fund

32.8


&#160;


Fidelity Series Bond Index Fund

10.3


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series International Developed Markets Bond Index Fund

2.3


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000220389_TH_0_Member"
      decimals="INF"
      id="ixv-212805"
      unitRef="pure">0.496</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220389_TH_1_Member"
      decimals="INF"
      id="ixv-212806"
      unitRef="pure">0.328</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220389_TH_2_Member"
      decimals="INF"
      id="ixv-212807"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220389_TH_3_Member"
      decimals="INF"
      id="ixv-212808"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000220389_TH_4_Member"
      decimals="INF"
      id="ixv-212809"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000220389_ClassMember" id="ixv-44016">
&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;1-800-544-3455&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 fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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="C000220389_ClassMember" id="ixv-44022">&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;1-800-544-3455&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="C000220389_ClassMember" id="ixv-44026">&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="C000220389_ClassMember" id="ixv-44029">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-3455&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000220389_ClassMember" id="ixv-44033">&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="C000220389_ClassMember" id="ixv-44044">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span 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;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The class's contractual management fee was reduced during the reporting period.&lt;/span&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-44109">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000079284_ClassMember" id="ixv-44121">Fidelity Freedom&#xae; Index 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000079284_ClassMember" id="ixv-44124">Fidelity Freedom&#xae; Index 2025 Fund Investor Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000079284_ClassMember" id="ixv-44128">FQIFX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000079284_ClassMember" id="ixv-44147">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000079284_ClassMember" id="ixv-44149">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000079284_ClassMember" id="ixv-44154">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="C000079284_ClassMember" id="ixv-44156">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000079284_ClassMember" id="ixv-44159">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000079284_ClassMember" id="ixv-44162">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000079284_ClassMember" id="ixv-44169">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;12&lt;span style="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;0.12&lt;span 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="C000079284_ClassMember"
      decimals="0"
      id="ixv-212810"
      unitRef="usd">12</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000079284_ClassMember"
      decimals="INF"
      id="ixv-212811"
      unitRef="pure">0.0012</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000079284_ClassMember" id="ixv-44211">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000079284_ClassMember" id="ixv-44235">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
March 31, 2015 through March 31, 2025.
Initial investment of $10,000.
Investor Class


$10,000

$9,828


$10,877


$11,913


$12,467


$12,124


$15,793


$16,094


$15,024


$16,808


$17,790



Fidelity Freedom Index 2025 Composite Index&#x2120;


$10,000

$9,842


$10,901


$11,951


$12,534


$12,197


$15,930


$16,288


$15,185


$17,025


$18,014



S&amp;P 500&#xae; Index


$10,000

$10,178


$11,926


$13,595


$14,886


$13,847


$21,650


$25,038


$23,103


$30,006


$32,482



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000079284_LG_ClassMember_11YR" id="ixv-44254">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Investor Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-212812"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-212813"
      unitRef="usd">9828</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212814"
      unitRef="usd">10877</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212815"
      unitRef="usd">11913</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212816"
      unitRef="usd">12467</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212817"
      unitRef="usd">12124</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212818"
      unitRef="usd">15793</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212819"
      unitRef="usd">16094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212820"
      unitRef="usd">15024</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212821"
      unitRef="usd">16808</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212822"
      unitRef="usd">17790</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079284_LG_1_AdditionalIndexMember_11YR"
      id="ixv-44303">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212823"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212824"
      unitRef="usd">9842</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212825"
      unitRef="usd">10901</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212826"
      unitRef="usd">11951</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212827"
      unitRef="usd">12534</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212828"
      unitRef="usd">12197</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212829"
      unitRef="usd">15930</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212830"
      unitRef="usd">16288</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212831"
      unitRef="usd">15185</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212832"
      unitRef="usd">17025</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212833"
      unitRef="usd">18014</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000079284_LG_2_AdditionalIndexMember_11YR"
      id="ixv-44352">&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="C000079284_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212834"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212835"
      unitRef="usd">10178</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212836"
      unitRef="usd">11926</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212837"
      unitRef="usd">13595</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212838"
      unitRef="usd">14886</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212839"
      unitRef="usd">13847</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212840"
      unitRef="usd">21650</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212841"
      unitRef="usd">25038</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212842"
      unitRef="usd">23103</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212843"
      unitRef="usd">30006</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000079284_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212844"
      unitRef="usd">32482</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000079284_ClassMember" id="ixv-44450">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Investor Class

5.84%

7.97%

5.93%


Fidelity Freedom Index 2025 Composite Index&#x2120;

5.81%


8.11%


6.06%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.50%




&#160;
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="C000079284_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212845"
      unitRef="pure">0.0584</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212846"
      unitRef="pure">0.0797</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-212847"
      unitRef="pure">0.0593</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212848"
      unitRef="pure">0.0581</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212849"
      unitRef="pure">0.0811</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-212850"
      unitRef="pure">0.0606</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212851"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212852"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000079284_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-212853"
      unitRef="pure">0.1250</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000079284_ClassMember" id="ixv-44527">&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="C000079284_ClassMember" id="ixv-44531">&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="C000079284_ClassMember" id="ixv-44537">&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;$&lt;/span&gt;13,994,954,502&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,898,228&lt;/div&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="C000079284_InstantMember"
      decimals="0"
      id="ixv-212854"
      unitRef="usd">13994954502</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000079284_InstantMember"
      decimals="INF"
      id="ixv-212855"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000079284_ClassMember"
      decimals="0"
      id="ixv-212856"
      unitRef="usd">10898228</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000079284_ClassMember"
      decimals="INF"
      id="ixv-212857"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000079284_ClassMember" id="ixv-44612">
&#160;
&#160;
&#160;
&#160;
Bond Funds

48.0


Domestic Equity Funds

31.3


International Equity Funds

20.7


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 48.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 31.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 20.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079284_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212858"
      unitRef="pure">0.480</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212859"
      unitRef="pure">0.313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212860"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212861"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000079284_ClassMember" id="ixv-44703">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

31.3


&#160;


Fidelity Series Bond Index Fund

29.4


&#160;


Fidelity Series Global ex U.S. Index Fund

20.7


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

9.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.9


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000079284_TH_0_Member"
      decimals="INF"
      id="ixv-212862"
      unitRef="pure">0.313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_TH_1_Member"
      decimals="INF"
      id="ixv-212863"
      unitRef="pure">0.294</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_TH_2_Member"
      decimals="INF"
      id="ixv-212864"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_TH_3_Member"
      decimals="INF"
      id="ixv-212865"
      unitRef="pure">0.098</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_TH_4_Member"
      decimals="INF"
      id="ixv-212866"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000079284_TH_5_Member"
      decimals="INF"
      id="ixv-212867"
      unitRef="pure">0.039</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-44834">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000177879_ClassMember" id="ixv-44846">Fidelity Flex&#xae; Freedom Blend 2055 Fund</oef:FundName>
    <oef:ClassName contextRef="C000177879_ClassMember" id="ixv-44849">Fidelity Flex&#xae; Freedom Blend 2055 Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000177879_ClassMember" id="ixv-44853">FQLSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000177879_ClassMember" id="ixv-44872">This annual shareholder report contains information about Fidelity Flex&#xae; Freedom Blend 2055 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000177879_ClassMember" id="ixv-44874">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000177879_ClassMember" id="ixv-44879">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000177879_ClassMember" id="ixv-44881">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000177879_ClassMember" id="ixv-44884">1-800-544-3455</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000177879_ClassMember" id="ixv-44887">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000177879_ClassMember" id="ixv-44894">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2055 Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;0&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: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;0.00&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&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;B&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;Amount represents less than $.50&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:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;"&gt;B &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans Cd';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Amount represents less than 0.005%&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="C000177879_ClassMember"
      decimals="0"
      id="ixv-212868"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000177879_ClassMember"
      decimals="INF"
      id="ixv-212869"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000177879_ClassMember" id="ixv-44946">&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 portfolios 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 returns among the underlying developed-markets portfolios also detracted on a relative basis. An overweight, on average, in long-term U.S. Treasury bond funds 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 Blue Chip Growth Fund (+4.78%), which trailed its benchmark, the Russell 1000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Growth Index (+7.76%) 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 Value Discovery Fund (+4.20%), which lagged the Russell 3000&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;&#xae;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt; Value Index (+6.66%). Within non-U.S. equities, an allocation to Fidelity Series Overseas Fund (+4.07%) also hurt, as this fund underperformed the MSCI EAFE Index (+5.14%).&#160;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 the performance of the underlying U.S. investment-grade bond investments. Here, Fidelity Series Investment Grade Bond Fund gained 5.71% for the period, topping the 4.88% advance of the Bloomberg U.S. Aggregate Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 U.S. equities, Fidelity Series Large Cap Stock Fund (+11.14%) stood out, given its outperformance of its benchmark (+8.25%). Also helping on a relative basis was an overweight allocation to non-U.S. equities.&#160;&#160;&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="C000177879_ClassMember" id="ixv-44977">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 8, 2017 through March 31, 2025.
Initial investment of $10,000.
Fidelity Flex&#xae; Freedom Blend 2055 Fund


$10,000

$10,990


$11,271


$10,117


$15,846


$16,455


$15,370


$18,669


$19,779



Fidelity Freedom 2055 Composite Index&#x2120;


$10,000

$10,910


$11,449


$10,443


$15,666


$16,507


$15,295


$18,375


$19,579



S&amp;P 500&#xae; Index


$10,000

$11,022


$12,068


$11,226


$17,552


$20,299


$18,730


$24,326


$26,334



&#160;

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000177879_LG_ClassMember_9YR" id="ixv-44996">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Flex&#xae; Freedom Blend 2055 Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212870"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212871"
      unitRef="usd">10990</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212872"
      unitRef="usd">11271</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212873"
      unitRef="usd">10117</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212874"
      unitRef="usd">15846</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212875"
      unitRef="usd">16455</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212876"
      unitRef="usd">15370</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212877"
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    <oef:AccmVal
      contextRef="C000177879_ClassMember_AsOf_2025"
      decimals="0"
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      unitRef="usd">19779</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177879_LG_1_AdditionalIndexMember_9YR"
      id="ixv-45037">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom 2055 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
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    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212880"
      unitRef="usd">10910</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212881"
      unitRef="usd">11449</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212882"
      unitRef="usd">10443</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212883"
      unitRef="usd">15666</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212884"
      unitRef="usd">16507</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212885"
      unitRef="usd">15295</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212886"
      unitRef="usd">18375</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212887"
      unitRef="usd">19579</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000177879_LG_2_AdditionalIndexMember_9YR"
      id="ixv-45078">&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="C000177879_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212888"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212889"
      unitRef="usd">11022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212890"
      unitRef="usd">12068</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212891"
      unitRef="usd">11226</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212892"
      unitRef="usd">17552</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212893"
      unitRef="usd">20299</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212894"
      unitRef="usd">18730</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212895"
      unitRef="usd">24326</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000177879_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212896"
      unitRef="usd">26334</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000177879_ClassMember" id="ixv-45162">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity Flex&#xae; Freedom Blend 2055 Fund

5.94%

14.35%

9.12%


Fidelity Freedom 2055 Composite Index&#x2120;

6.55%


13.39%


8.98%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.19%




A&#160; &#160;From June 8, 2017

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-212897"
      unitRef="pure">0.0594</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177879_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212898"
      unitRef="pure">0.1435</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177879_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212899"
      unitRef="pure">0.0912</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177879_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212900"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177879_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212901"
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    <oef:AvgAnnlRtrPct
      contextRef="C000177879_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212902"
      unitRef="pure">0.0898</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000177879_1_BBIndexMember_1YR"
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      id="ixv-212903"
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    <oef:AvgAnnlRtrPct
      contextRef="C000177879_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212904"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="INF"
      id="ixv-212905"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000177879_ClassMember" id="ixv-45231">2017-06-08</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000177879_ClassMember" id="ixv-45248">&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="C000177879_ClassMember" id="ixv-45252">&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="C000177879_ClassMember" id="ixv-45258">&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;$&lt;/span&gt;36,669,611&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;23&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&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;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;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&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="C000177879_InstantMember"
      decimals="0"
      id="ixv-212906"
      unitRef="usd">36669611</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000177879_InstantMember"
      decimals="INF"
      id="ixv-212907"
      unitRef="holding">23</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      decimals="0"
      id="ixv-212908"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000177879_ClassMember"
      decimals="INF"
      id="ixv-212909"
      unitRef="pure">0.42</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000177879_ClassMember" id="ixv-45333">
&#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="C000177879_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212910"
      unitRef="pure">0.515</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177879_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212911"
      unitRef="pure">0.415</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177879_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212912"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-212913"
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    <oef:LargestHoldingsTableTextBlock contextRef="C000177879_ClassMember" id="ixv-45424">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Large Cap Value Index Fund

14.6


&#160;


Fidelity Series Blue Chip Growth Fund

12.0


&#160;


Fidelity Series Emerging Markets Opportunities Fund

10.4


&#160;


Fidelity Series Large Cap Growth Index Fund

7.7


&#160;


Fidelity Series International Growth Fund

7.2


&#160;


Fidelity Series Overseas Fund

7.1


&#160;


Fidelity Series International Value Fund

7.1


&#160;


Fidelity Series Large Cap Stock Fund

7.1


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

7.0


&#160;


Fidelity Series Value Discovery Fund

5.3


&#160;


&#160;

85.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
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      id="ixv-212914"
      unitRef="pure">0.146</oef:PctOfNav>
    <oef:PctOfNav
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      id="ixv-212915"
      unitRef="pure">0.120</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177879_TH_2_Member"
      decimals="INF"
      id="ixv-212916"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177879_TH_3_Member"
      decimals="INF"
      id="ixv-212917"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-212918"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-212919"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177879_TH_6_Member"
      decimals="INF"
      id="ixv-212920"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
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      decimals="INF"
      id="ixv-212921"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177879_TH_8_Member"
      decimals="INF"
      id="ixv-212922"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000177879_TH_9_Member"
      decimals="INF"
      id="ixv-212923"
      unitRef="pure">0.053</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-45595">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000212330_ClassMember" id="ixv-45599">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000212330_ClassMember" id="ixv-45610">Fidelity Freedom&#xae; Index 2065 Fund</oef:FundName>
    <oef:ClassName contextRef="C000212330_ClassMember" id="ixv-45613">Fidelity Freedom&#xae; Index 2065 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000212330_ClassMember" id="ixv-45617">FFIKX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000212330_ClassMember" id="ixv-45636">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2065 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000212330_ClassMember" id="ixv-45638">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000212330_ClassMember" id="ixv-45643">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="C000212330_ClassMember" id="ixv-45645">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000212330_ClassMember" id="ixv-45648">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000212330_ClassMember" id="ixv-45651">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000212330_ClassMember" id="ixv-45658">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000212330_ClassMember"
      decimals="0"
      id="ixv-212924"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000212330_ClassMember"
      decimals="INF"
      id="ixv-212925"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000212330_ClassMember" id="ixv-45700">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000212330_ClassMember" id="ixv-45724">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 28, 2019 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,388,267


$6,579,063


$6,904,618


$6,415,946


$7,693,687


$8,200,517



Fidelity Freedom Index 2065 Composite Index&#x2120;


$5,000,000

$4,391,280


$6,587,170


$6,940,979


$6,431,170


$7,726,522


$8,232,519



S&amp;P 500&#xae; Index


$5,000,000

$4,459,188


$6,972,014


$8,062,841


$7,439,709


$9,662,779


$10,460,122



&#160;

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000212330_LG_ClassMember_7YR" id="ixv-45743">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000212330_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212926"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212927"
      unitRef="usd">4388267</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212928"
      unitRef="usd">6579063</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212929"
      unitRef="usd">6904618</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212930"
      unitRef="usd">6415946</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212931"
      unitRef="usd">7693687</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212932"
      unitRef="usd">8200517</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000212330_LG_1_AdditionalIndexMember_7YR"
      id="ixv-45776">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2065 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000212330_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212933"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212934"
      unitRef="usd">4391280</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212935"
      unitRef="usd">6587170</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212936"
      unitRef="usd">6940979</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212937"
      unitRef="usd">6431170</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212938"
      unitRef="usd">7726522</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212939"
      unitRef="usd">8232519</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000212330_LG_2_AdditionalIndexMember_7YR"
      id="ixv-45809">&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="C000212330_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212940"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212941"
      unitRef="usd">4459188</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212942"
      unitRef="usd">6972014</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212943"
      unitRef="usd">8062841</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212944"
      unitRef="usd">7439709</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212945"
      unitRef="usd">9662779</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000212330_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212946"
      unitRef="usd">10460122</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000212330_ClassMember" id="ixv-45879">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

6.59%

13.32%

8.99%


Fidelity Freedom Index 2065 Composite Index&#x2120;

6.55%


13.39%


9.06%


S&amp;P 500&#xae; Index

8.25%


18.59%


13.70%




A&#160; &#160;From June 28, 2019

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="C000212330_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-212947"
      unitRef="pure">0.0659</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-212948"
      unitRef="pure">0.1332</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-212949"
      unitRef="pure">0.0899</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-212950"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-212951"
      unitRef="pure">0.1339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-212952"
      unitRef="pure">0.0906</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-212953"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-212954"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212330_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-212955"
      unitRef="pure">0.1370</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000212330_ClassMember" id="ixv-45948">2019-06-28</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000212330_ClassMember" id="ixv-45965">&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="C000212330_ClassMember" id="ixv-45969">&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="C000212330_ClassMember" id="ixv-45975">&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;$&lt;/span&gt;2,824,283,726&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;5&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,688,737&lt;/div&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;9&lt;span 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="C000212330_InstantMember"
      decimals="0"
      id="ixv-212956"
      unitRef="usd">2824283726</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000212330_InstantMember"
      decimals="INF"
      id="ixv-212957"
      unitRef="holding">5</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000212330_ClassMember"
      decimals="0"
      id="ixv-212958"
      unitRef="usd">1688737</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000212330_ClassMember"
      decimals="INF"
      id="ixv-212959"
      unitRef="pure">0.09</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000212330_ClassMember" id="ixv-46050">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

54.3


International Equity Funds

35.8


Bond Funds

9.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 54.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 35.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 9.9&#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="C000212330_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-212960"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212330_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-212961"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212330_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-212962"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212330_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-212963"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000212330_ClassMember" id="ixv-46141">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

54.3


&#160;


Fidelity Series Global ex U.S. Index Fund

35.8


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

5.0


&#160;


Fidelity Series Bond Index Fund

3.9


&#160;


Fidelity Series International Developed Markets Bond Index Fund

1.0


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000212330_TH_0_Member"
      decimals="INF"
      id="ixv-212964"
      unitRef="pure">0.543</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212330_TH_1_Member"
      decimals="INF"
      id="ixv-212965"
      unitRef="pure">0.358</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212330_TH_2_Member"
      decimals="INF"
      id="ixv-212966"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212330_TH_3_Member"
      decimals="INF"
      id="ixv-212967"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000212330_TH_4_Member"
      decimals="INF"
      id="ixv-212968"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000212330_ClassMember" id="ixv-46216">
&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&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;/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="C000212330_ClassMember" id="ixv-46222">&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="C000212330_ClassMember" id="ixv-46226">&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="C000212330_ClassMember" id="ixv-46229">&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="C000212330_ClassMember" id="ixv-46233">&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="C000212330_ClassMember" id="ixv-46244">&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&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;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-46305">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157966_ClassMember" id="ixv-46317">Fidelity Freedom&#xae; Index 2035 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157966_ClassMember" id="ixv-46320">Fidelity Freedom&#xae; Index 2035 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157966_ClassMember" id="ixv-46324">FFEZX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157966_ClassMember" id="ixv-46343">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2035 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157966_ClassMember" id="ixv-46345">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157966_ClassMember" id="ixv-46350">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="C000157966_ClassMember" id="ixv-46352">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157966_ClassMember" id="ixv-46355">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157966_ClassMember" id="ixv-46358">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157966_ClassMember" id="ixv-46365">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157966_ClassMember"
      decimals="0"
      id="ixv-212969"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157966_ClassMember"
      decimals="INF"
      id="ixv-212970"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157966_ClassMember" id="ixv-46407">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157966_ClassMember" id="ixv-46431">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,748,091


$5,454,018


$6,163,264


$6,452,249


$5,979,040


$8,628,137


$8,957,909


$8,339,022


$9,681,124


$10,283,540



Fidelity Freedom Index 2035 Composite Index&#x2120;


$5,000,000

$4,751,667


$5,457,599


$6,167,723


$6,469,456


$6,001,755


$8,667,258


$9,032,076


$8,390,947


$9,761,594


$10,362,676



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157966_LG_ClassMember_11YR" id="ixv-46450">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-212971"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-212972"
      unitRef="usd">4748091</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-212973"
      unitRef="usd">5454018</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-212974"
      unitRef="usd">6163264</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-212975"
      unitRef="usd">6452249</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-212976"
      unitRef="usd">5979040</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-212977"
      unitRef="usd">8628137</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-212978"
      unitRef="usd">8957909</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-212979"
      unitRef="usd">8339022</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-212980"
      unitRef="usd">9681124</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-212981"
      unitRef="usd">10283540</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157966_LG_1_AdditionalIndexMember_11YR"
      id="ixv-46499">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2035 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212982"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212983"
      unitRef="usd">4751667</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212984"
      unitRef="usd">5457599</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212985"
      unitRef="usd">6167723</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212986"
      unitRef="usd">6469456</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212987"
      unitRef="usd">6001755</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212988"
      unitRef="usd">8667258</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-212989"
      unitRef="usd">9032076</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-212990"
      unitRef="usd">8390947</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-212991"
      unitRef="usd">9761594</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-212992"
      unitRef="usd">10362676</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157966_LG_2_AdditionalIndexMember_11YR"
      id="ixv-46548">&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="C000157966_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-212993"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-212994"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-212995"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-212996"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-212997"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-212998"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-212999"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-213000"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-213001"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-213002"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157966_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-213003"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157966_ClassMember" id="ixv-46646">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

6.22%

11.46%

7.66%


Fidelity Freedom Index 2035 Composite Index&#x2120;

6.16%


11.54%


7.74%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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="C000157966_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-213004"
      unitRef="pure">0.0622</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-213005"
      unitRef="pure">0.1146</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_NoLoadClassMember_2024-04-01_2025-03-31"
      decimals="INF"
      id="ixv-213006"
      unitRef="pure">0.0766</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-213007"
      unitRef="pure">0.0616</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-213008"
      unitRef="pure">0.1154</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-213009"
      unitRef="pure">0.0774</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-213010"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-213011"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157966_1_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-213012"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157966_ClassMember" id="ixv-46715">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157966_ClassMember" id="ixv-46732">&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="C000157966_ClassMember" id="ixv-46736">&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="C000157966_ClassMember" id="ixv-46742">&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;$&lt;/span&gt;23,218,218,191&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;16,510,342&lt;/div&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="C000157966_InstantMember"
      decimals="0"
      id="ixv-213013"
      unitRef="usd">23218218191</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000157966_InstantMember"
      decimals="INF"
      id="ixv-213014"
      unitRef="holding">6</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000157966_ClassMember"
      decimals="0"
      id="ixv-213015"
      unitRef="usd">16510342</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000157966_ClassMember"
      decimals="INF"
      id="ixv-213016"
      unitRef="pure">0.15</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000157966_ClassMember" id="ixv-46817">
&#160;
&#160;
&#160;
&#160;
Domestic Equity Funds

40.8


Bond Funds

32.3


International Equity Funds

26.9


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Domestic Equity Funds - 40.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bond Funds - 32.3&#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 - 26.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

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


&#160;






</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157966_AA_DomesticEquityFunds_Member"
      decimals="INF"
      id="ixv-213017"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_AA_BondFunds_Member"
      decimals="INF"
      id="ixv-213018"
      unitRef="pure">0.323</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_AA_InternationalEquityFunds_Member"
      decimals="INF"
      id="ixv-213019"
      unitRef="pure">0.269</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-213020"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000157966_ClassMember" id="ixv-46908">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

40.8


&#160;


Fidelity Series Global ex U.S. Index Fund

26.9


&#160;


Fidelity Series Bond Index Fund

21.7


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

4.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.4


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

1.4


&#160;


&#160;

100.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000157966_TH_0_Member"
      decimals="INF"
      id="ixv-213021"
      unitRef="pure">0.408</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_TH_1_Member"
      decimals="INF"
      id="ixv-213022"
      unitRef="pure">0.269</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_TH_2_Member"
      decimals="INF"
      id="ixv-213023"
      unitRef="pure">0.217</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_TH_3_Member"
      decimals="INF"
      id="ixv-213024"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_TH_4_Member"
      decimals="INF"
      id="ixv-213025"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157966_TH_5_Member"
      decimals="INF"
      id="ixv-213026"
      unitRef="pure">0.014</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-47039">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000157964_ClassMember" id="ixv-47051">Fidelity Freedom&#xae; Index 2025 Fund</oef:FundName>
    <oef:ClassName contextRef="C000157964_ClassMember" id="ixv-47054">Fidelity Freedom&#xae; Index 2025 Fund Institutional Premium Class</oef:ClassName>
    <dei:TradingSymbol contextRef="C000157964_ClassMember" id="ixv-47058">FFEDX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000157964_ClassMember" id="ixv-47077">This annual shareholder report contains information about Fidelity Freedom&#xae; Index 2025 Fund for the period April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000157964_ClassMember" id="ixv-47079">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000157964_ClassMember" id="ixv-47084">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="C000157964_ClassMember" id="ixv-47086">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000157964_ClassMember" id="ixv-47089">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000157964_ClassMember" id="ixv-47092">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000157964_ClassMember" id="ixv-47099">&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="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;0.08&lt;span 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="C000157964_ClassMember"
      decimals="0"
      id="ixv-213027"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000157964_ClassMember"
      decimals="INF"
      id="ixv-213028"
      unitRef="pure">0.0008</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000157964_ClassMember" id="ixv-47141">&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, performance during the period was primarily driven by the returns of the strategic asset classes. The fund's strategic asset allocation reflects our long-term views and insights on participant needs, diversification, and capital markets. Our investment process is focused on selecting strategic asset classes that provide long-term returns, independent sources of return and risk, and favorable portfolio implementation attributes.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. equities gained 7.09% for the 12 months as measured by the return of the Dow Jones U.S. Total Market Index. The fund's underlying investment in Fidelity&#xae; Series Total Market Index Fund returned 7.06% for the 12 months.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Non-U.S. equities advanced 6.27% during the reporting period, as represented by the MSCI All Country World ex USA Index. By comparison, the fund's investment in Fidelity&#xae; Series Global ex U.S. Index gained 6.80%.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fixed-income allocations, the fund's investment in Fidelity&#xae; Series Bond Index Fund returned 4.93%, modestly topping the 4.88% result of the Bloomberg U.S. Aggregate Bond Index. Elsewhere in fixed income, an allocation to Fidelity&#xae; Series Long-Term Treasury Bond Index Fund gained 1.62%, compared with a return of 1.26% for the Bloomberg U.S. Long-Term Treasury Bond Index.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. long-term Treasury inflation-protected securities returned 5.13%, as measured by the Bloomberg U.S. TIPS 5-Plus Years Index; the Funds' investment in this asset class advanced 5.50%.&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="C000157964_ClassMember" id="ixv-47165">How did the Fund perform over the life of Fund?

 &#160;&#160;
CUMULATIVE PERFORMANCE
June 24, 2015 through March 31, 2025.
Initial investment of $5,000,000.
Institutional Premium Class


$5,000,000

$4,846,649


$5,367,088


$5,881,141


$6,157,643


$5,990,620


$7,810,213


$7,962,951


$7,436,555


$8,319,007


$8,808,258



Fidelity Freedom Index 2025 Composite Index&#x2120;


$5,000,000

$4,850,328


$5,372,296


$5,889,816


$6,176,845


$6,010,677


$7,850,629


$8,027,130


$7,483,486


$8,390,320


$8,877,405



S&amp;P 500&#xae; Index


$5,000,000

$4,967,470


$5,820,498


$6,634,891


$7,264,973


$6,758,028


$10,566,289


$12,219,469


$11,275,094


$14,644,221


$15,852,618



&#160;

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000157964_LG_ClassMember_11YR" id="ixv-47184">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Institutional Premium Class&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-213029"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-213030"
      unitRef="usd">4846649</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-213031"
      unitRef="usd">5367088</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-213032"
      unitRef="usd">5881141</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-213033"
      unitRef="usd">6157643</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-213034"
      unitRef="usd">5990620</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-213035"
      unitRef="usd">7810213</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-213036"
      unitRef="usd">7962951</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-213037"
      unitRef="usd">7436555</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-213038"
      unitRef="usd">8319007</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-213039"
      unitRef="usd">8808258</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157964_LG_1_AdditionalIndexMember_11YR"
      id="ixv-47233">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Freedom Index 2025 Composite Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-213040"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-213041"
      unitRef="usd">4850328</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-213042"
      unitRef="usd">5372296</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-213043"
      unitRef="usd">5889816</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-213044"
      unitRef="usd">6176845</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-213045"
      unitRef="usd">6010677</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-213046"
      unitRef="usd">7850629</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-213047"
      unitRef="usd">8027130</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-213048"
      unitRef="usd">7483486</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-213049"
      unitRef="usd">8390320</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-213050"
      unitRef="usd">8877405</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000157964_LG_2_AdditionalIndexMember_11YR"
      id="ixv-47282">&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="C000157964_2_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-213051"
      unitRef="usd">5000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-213052"
      unitRef="usd">4967470</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-213053"
      unitRef="usd">5820498</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-213054"
      unitRef="usd">6634891</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-213055"
      unitRef="usd">7264973</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-213056"
      unitRef="usd">6758028</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-213057"
      unitRef="usd">10566289</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-213058"
      unitRef="usd">12219469</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-213059"
      unitRef="usd">11275094</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-213060"
      unitRef="usd">14644221</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000157964_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-213061"
      unitRef="usd">15852618</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000157964_ClassMember" id="ixv-47380">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

Life of Fund&#160;A


Institutional Premium Class

5.88%

8.01%

5.96%


Fidelity Freedom Index 2025 Composite Index&#x2120;

5.81%


8.11%


6.05%


S&amp;P 500&#xae; Index

8.25%


18.59%


12.53%




A&#160; &#160;From June 24, 2015

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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      id="ixv-213062"
      unitRef="pure">0.0588</oef:AvgAnnlRtrPct>
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      id="ixv-213063"
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      contextRef="C000157964_NoLoadClassMember_2024-04-01_2025-03-31"
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      id="ixv-213065"
      unitRef="pure">0.0581</oef:AvgAnnlRtrPct>
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      id="ixv-213066"
      unitRef="pure">0.0811</oef:AvgAnnlRtrPct>
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      contextRef="C000157964_0_AdditionalIndexMember_LOC"
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      id="ixv-213067"
      unitRef="pure">0.0605</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157964_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-213068"
      unitRef="pure">0.0825</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000157964_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-213069"
      unitRef="pure">0.1859</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      id="ixv-213070"
      unitRef="pure">0.1253</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000157964_ClassMember" id="ixv-47449">2015-06-24</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000157964_ClassMember" id="ixv-47466">&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="C000157964_ClassMember" id="ixv-47470">&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="C000157964_ClassMember" id="ixv-47476">&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;$&lt;/span&gt;13,994,954,502&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;6&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;10,898,228&lt;/div&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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    <oef:HoldingsCount
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    <oef:AdvisoryFeesPaidAmt
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    <us-gaap:InvestmentCompanyPortfolioTurnover
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    <oef:HoldingsTableTextBlock contextRef="C000157964_ClassMember" id="ixv-47551">
&#160;
&#160;
&#160;
&#160;
Bond Funds

48.0


Domestic Equity Funds

31.3


International Equity Funds

20.7


Short-Term Investments and Net Other Assets (Liabilities)

0.0




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Bond Funds - 48.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Domestic Equity Funds - 31.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

International Equity Funds - 20.7&#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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      id="ixv-213075"
      unitRef="pure">0.480</oef:PctOfNav>
    <oef:PctOfNav
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      id="ixv-213076"
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    <oef:PctOfNav
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      decimals="INF"
      id="ixv-213077"
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      id="ixv-213078"
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    <oef:LargestHoldingsTableTextBlock contextRef="C000157964_ClassMember" id="ixv-47642">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Fidelity Series Total Market Index Fund

31.3


&#160;


Fidelity Series Bond Index Fund

29.4


&#160;


Fidelity Series Global ex U.S. Index Fund

20.7


&#160;


Fidelity Series 5+ Year Inflation-Protected Bond Index Fund

9.8


&#160;


Fidelity Series International Developed Markets Bond Index Fund

4.9


&#160;


Fidelity Series Long-Term Treasury Bond Index Fund

3.9


&#160;


&#160;

100.0

&#160;



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      contextRef="C000157964_TH_2_Member"
      decimals="INF"
      id="ixv-213081"
      unitRef="pure">0.207</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000157964_TH_3_Member"
      decimals="INF"
      id="ixv-213082"
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      contextRef="C000157964_TH_4_Member"
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      id="ixv-213083"
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      contextRef="C000157964_TH_5_Member"
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      id="ixv-213084"
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</xbrl>
