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    <unit id="usd">
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    <oef:MaterialFundChngNoticeTextBlock contextRef="C000206762_ClassMember" id="ixv-103">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000206762_ClassMember" id="ixv-114">Fidelity&#xae; SAI Inflation-Focused Fund</oef:FundName>
    <oef:ClassName contextRef="C000206762_ClassMember" id="ixv-117">Fidelity&#xae; SAI Inflation-Focused Fund</oef:ClassName>
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    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000206762_ClassMember" id="ixv-141">This annual shareholder report contains information about Fidelity&#xae; SAI Inflation-Focused Fund for the period August 1, 2023 to July 31, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000206762_ClassMember" id="ixv-143">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000206762_ClassMember" id="ixv-148">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000206762_ClassMember" id="ixv-150">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000206762_ClassMember" id="ixv-153">1-800-544-3455</oef:AddlInfoPhoneNumber>
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    <oef:ExpensesTextBlock contextRef="C000206762_ClassMember" id="ixv-163">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;"&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;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:43%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="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:25%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;"&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:31%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;"&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:43%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; SAI Inflation-Focused Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:25%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:31%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;"&gt;0.39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
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    <oef:FactorsAffectingPerfTextBlock contextRef="C000206762_ClassMember" id="ixv-207">&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;"&gt;&lt;span style="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-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;For the 12 months ending July 31, 2024, many commodities lost value amid often-favorable supply conditions and a stronger U.S. dollar. Others benefited amid an expanding global economy and a slowing in the pace of inflation in certain markets, as well as moves by some central banks toward monetary easing. Meanwhile, Treasury Inflation Protected Securities lagged money market securities.&#160;(The following returns are stated on a total-return basis.)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;For the full 12 months, the grains group (-26%) within the agriculture sector (-16%) detracted most, hampered most by corn (-29%) and soybeans (-21%). Grains faced headwinds from a rising U.S. dollar. Also within agriculture, soybean oil (-27%) experienced weakness, while so-called softs (+9%) were led by coffee (+54%).&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;The energy sector (-13%) also detracted, hampered by a sharp decline in natural gas (-54%). However, West Texas Intermediate crude oil (+8%) and Brent crude oil (+7%) gained, benefiting from tighter supplies.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fund benefited from precious metals (+21%) amid dovish monetary policy expectations and safe-haven demand with gold and silver gaining about 22% and 15%, respectively.&#160;Elsewhere, industrial metals returned about -2%, led by copper (+7%), while nickel (-26%) lost value.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Livestock gained 2%, led by strength in the price of live cattle (+8%) partly counterbalanced by weakness in lean hogs (-7%).&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000206762_ClassMember" id="ixv-228">How did the Fund perform over the life of Fund?
&#160;
 &#160;&#160;
CUMULATIVE PERFORMANCE
December 20, 2018 through July 31, 2024.
Initial investment of $10,000.

Fidelity&#xae; SAI Inflation-Focused Fund
&#160;

$10,000

$10,351
&#160;

$9,518
&#160;

$13,953
&#160;

$17,787
&#160;

$15,330
&#160;

$14,713
&#160;


Fidelity Commodity Linked Index&#x2120;
&#160;

$10,000

$10,166
&#160;

$8,938
&#160;

$12,538
&#160;

$15,952
&#160;

$14,695
&#160;

$13,960
&#160;


Bloomberg Commodity 50/50 Petroleum and ex-Petroleum Index
&#160;

$10,000

$10,351
&#160;

$9,518
&#160;

$13,953
&#160;

$17,787
&#160;

$15,671
&#160;

$15,549
&#160;


Bloomberg Commodity Index
&#160;

$10,000

$10,166
&#160;

$8,938
&#160;

$12,538
&#160;

$15,952
&#160;

$14,695
&#160;

$13,935
&#160;


&#160;

2018

2019

2020

2021

2022

2023

2024









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000206762_LG_ClassMember_7YR" id="ixv-247">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; SAI Inflation-Focused Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000206762_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-20582"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-20583"
      unitRef="usd">10351</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-20584"
      unitRef="usd">9518</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-20585"
      unitRef="usd">13953</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-20586"
      unitRef="usd">17787</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-20587"
      unitRef="usd">15330</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-20588"
      unitRef="usd">14713</oef:AcctVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000206762_LG_1_AdditionalIndexMember_7YR"
      id="ixv-287">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity Commodity Linked Index&#x2120;&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000206762_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-20589"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-20590"
      unitRef="usd">10166</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-20591"
      unitRef="usd">8938</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-20592"
      unitRef="usd">12538</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-20593"
      unitRef="usd">15952</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-20594"
      unitRef="usd">14695</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-20595"
      unitRef="usd">13960</oef:AcctVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000206762_LG_2_AdditionalIndexMember_7YR"
      id="ixv-327">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg Commodity 50/50 Petroleum and ex-Petroleum Index &lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000206762_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-20596"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-20597"
      unitRef="usd">10351</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-20598"
      unitRef="usd">9518</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-20599"
      unitRef="usd">13953</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-20600"
      unitRef="usd">17787</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-20601"
      unitRef="usd">15671</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-20602"
      unitRef="usd">15549</oef:AcctVal>
    <oef:LineGraphAndTableMeasureName contextRef="C000206762_0_LG_BBIndexMember_7YR" id="ixv-367">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg Commodity Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000206762_0_BBIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-20603"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_0_BBIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-20604"
      unitRef="usd">10166</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_0_BBIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-20605"
      unitRef="usd">8938</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_0_BBIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-20606"
      unitRef="usd">12538</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_0_BBIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-20607"
      unitRef="usd">15952</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_0_BBIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-20608"
      unitRef="usd">14695</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000206762_0_BBIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-20609"
      unitRef="usd">13935</oef:AcctVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000206762_ClassMember" id="ixv-444">AVERAGE ANNUAL TOTAL RETURNS:
&#160;
&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity&#xae; SAI Inflation-Focused Fund

-4.03%

7.29%

7.12%


Fidelity Commodity Linked Index&#x2120;

-5.00%

6.55%

6.12%


Bloomberg Commodity 50/50 Petroleum and ex-Petroleum Index

-0.78%

-%

-%


Bloomberg Commodity Index

-5.17%

6.51%

6.09%




A&#160; &#160;From December 20, 2018
&#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.
&#160;



</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_NoLoadClassMember_1YR"
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      id="ixv-20610"
      unitRef="pure">-0.0403</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-20611"
      unitRef="pure">0.0729</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_NoLoadClassMember_2023-08-01_2024-07-31"
      decimals="INF"
      id="ixv-20612"
      unitRef="pure">0.0712</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-20613"
      unitRef="pure">-0.0500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-20614"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_0_AdditionalIndexMember_LOC"
      decimals="INF"
      id="ixv-20615"
      unitRef="pure">0.0612</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_1_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-20616"
      unitRef="pure">-0.0078</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_1_AdditionalIndexMember_5YR"
      id="ixv-20617"
      unitRef="pure"
      xsi:nil="true"/>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_1_AdditionalIndexMember_LOC"
      id="ixv-20618"
      unitRef="pure"
      xsi:nil="true"/>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_2_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-20619"
      unitRef="pure">-0.0517</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_2_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-20620"
      unitRef="pure">0.0651</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000206762_2_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-20621"
      unitRef="pure">0.0609</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000206762_ClassMember" id="ixv-529">2018-12-20</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000206762_ClassMember" id="ixv-547">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;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="C000206762_ClassMember" id="ixv-551">&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="C000206762_ClassMember" id="ixv-557">&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;span style="line-height:16px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of July 31, 2024)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;"&gt;&lt;/div&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;"&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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&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;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&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;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,273,799,379&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;"&gt;53&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;13,403,812&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&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;"&gt;0&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000206762_InstantMember"
      decimals="0"
      id="ixv-20622"
      unitRef="usd">4273799379</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000206762_InstantMember"
      decimals="INF"
      id="ixv-20623"
      unitRef="holding">53</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000206762_ClassMember"
      decimals="0"
      id="ixv-20624"
      unitRef="usd">13403812</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000206762_ClassMember"
      decimals="INF"
      id="ixv-20625"
      unitRef="pure">0</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000206762_ClassMember" id="ixv-638">

Energy

53.7


Agriculture

18.5


Precious Metals

14.3


Industrial Metals

8.8


Livestock

4.7




COMMODITY SECTOR DIVERSIFICATION (% of Fund's net assets)









DERIVATIVE EXPOSURE
(% of Fund's net assets)

&#160;

&#160;


Futures Contracts

100.0

&#160;


&#160;




&#160;

Futures Contracts

50.0


Short-Term Investments and Net Other Assets (Liabilities)

50.0




ASSET ALLOCATION (% of Fund's total exposure)









</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000206762_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-20626"
      unitRef="pure">0.537</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000206762_MS_AgriculturalSectorMember"
      decimals="INF"
      id="ixv-20627"
      unitRef="pure">0.185</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000206762_MS_PreciousMetalsSectorMember"
      decimals="INF"
      id="ixv-20628"
      unitRef="pure">0.143</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000206762_MS_IndustrialMetalsSectorMember"
      decimals="INF"
      id="ixv-20629"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000206762_MS_LivestockSectorMember"
      decimals="INF"
      id="ixv-20630"
      unitRef="pure">0.047</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000206762_DE_FuturesContracts_Member"
      decimals="INF"
      id="ixv-20631"
      unitRef="pure">1.000</oef:PctOfNav>
    <oef:PctOfNetLongExposure
      contextRef="C000206762_AA_FuturesContracts_Member"
      decimals="INF"
      id="ixv-20632"
      unitRef="pure">0.500</oef:PctOfNetLongExposure>
    <oef:PctOfNetLongExposure
      contextRef="C000206762_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-20633"
      unitRef="pure">0.500</oef:PctOfNetLongExposure>
    <oef:MaterialFundChngTextBlock contextRef="C000206762_ClassMember" id="ixv-745">
&lt;div style="text-align:left;"&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;"&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;"&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 1, 2023. 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;September 28, 2024 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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&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;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund's principal investment strategies were modified to provide more investment flexibility, as described in the prospectus.&lt;/span&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000206762_ClassMember" id="ixv-751">&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 1, 2023. 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;September 28, 2024 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="C000206762_ClassMember" id="ixv-755">&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="C000206762_ClassMember" id="ixv-758">&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="C000206762_ClassMember" id="ixv-762">&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:MaterialFundChngStrategiesTextBlock contextRef="C000206762_ClassMember" id="ixv-773">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund's principal investment strategies were modified to provide more investment flexibility, as described in the prospectus.&lt;/span&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:MaterialFundChngStrategiesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-833">2024-07-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000175832_ClassMember" id="ixv-837">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000175832_ClassMember" id="ixv-848">Fidelity&#xae; Commodity Strategy Fund</oef:FundName>
    <oef:ClassName contextRef="C000175832_ClassMember" id="ixv-851">Fidelity&#xae; Commodity Strategy Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000175832_ClassMember" id="ixv-855">FYHTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000175832_ClassMember" id="ixv-875">This annual shareholder report contains information about Fidelity&#xae; Commodity Strategy Fund for the period August 1, 2023 to July 31, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000175832_ClassMember" id="ixv-877">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000175832_ClassMember" id="ixv-882">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="C000175832_ClassMember" id="ixv-884">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000175832_ClassMember" id="ixv-887">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000175832_ClassMember" id="ixv-890">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000175832_ClassMember" id="ixv-897">&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;"&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;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:43%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="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:25%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;"&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:31%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;"&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:43%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Commodity Strategy Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:25%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;62&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:31%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;"&gt;0.63&lt;span 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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000175832_ClassMember"
      decimals="0"
      id="ixv-20634"
      unitRef="usd">62</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000175832_ClassMember"
      decimals="INF"
      id="ixv-20635"
      unitRef="pure">0.0063</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000175832_ClassMember" id="ixv-941">&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;"&gt;&lt;span style="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-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;For the 12 months ending July 31, 2024, many commodities lost value amid often-favorable supply conditions and a stronger U.S. dollar. Others benefited amid an expanding global economy and a slowing in the pace of inflation in certain markets, as well as moves by some central banks toward monetary easing.&#160;(The following returns are stated on a total-return basis.)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;For the full 12 months, the grains group (-26%) within the agriculture sector (-16%) detracted most, hampered most by corn (-29%) and soybeans (-21%). Grains faced headwinds from a rising U.S. dollar. Also within agriculture, soybean oil (-27%) experienced weakness, while so-called softs (+9%) were led by coffee (+54%).&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;The energy sector (-13%) also detracted, hampered by a sharp decline in natural gas (-54%). However, West Texas Intermediate crude oil (+8%) and Brent crude oil (+7%) gained, benefiting from tighter supplies.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fund benefited from precious metals (+21%) amid dovish monetary policy expectations and safe-haven demand with gold and silver gaining about 22% and 15%, respectively.&#160;Elsewhere, industrial metals returned about -2%, led by copper (+7%), while nickel (-26%) lost value.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Livestock gained 2%, led by strength in the price of live cattle (+8%) partly counterbalanced by weakness in lean hogs (-7%).&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000175832_ClassMember" id="ixv-962">How did the Fund perform over the life of Fund?
&#160;
 &#160;&#160;
CUMULATIVE PERFORMANCE
May 30, 2017 through July 31, 2024.
Initial investment of $10,000.

Fidelity&#xae; Commodity Strategy Fund
&#160;

$10,000

$10,150
&#160;

$10,329
&#160;

$9,675
&#160;

$8,505
&#160;

$11,820
&#160;

$14,785
&#160;

$13,505
&#160;


Bloomberg Commodity Index
&#160;

$10,000

$10,161
&#160;

$10,438
&#160;

$9,879
&#160;

$8,686
&#160;

$12,185
&#160;

$15,502
&#160;

$14,280
&#160;


&#160;

2017

2018

2019

2020

2021

2022

2023

2024









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000175832_LG_ClassMember_8YR" id="ixv-981">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Commodity Strategy Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-20636"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-20637"
      unitRef="usd">10150</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-20638"
      unitRef="usd">10329</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-20639"
      unitRef="usd">9675</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-20640"
      unitRef="usd">8505</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-20641"
      unitRef="usd">11820</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-20642"
      unitRef="usd">14785</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-20643"
      unitRef="usd">13505</oef:AcctVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000175832_LG_1_AdditionalIndexMember_8YR"
      id="ixv-1026">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg Commodity Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-20644"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-20645"
      unitRef="usd">10161</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-20646"
      unitRef="usd">10438</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-20647"
      unitRef="usd">9879</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-20648"
      unitRef="usd">8686</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-20649"
      unitRef="usd">12185</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-20650"
      unitRef="usd">15502</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000175832_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-20651"
      unitRef="usd">14280</oef:AcctVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000175832_ClassMember" id="ixv-1111">AVERAGE ANNUAL TOTAL RETURNS:
&#160;
&#160;

1 Year

5 Year

Life of Fund&#160;A


Fidelity&#xae; Commodity Strategy Fund

-5.45%

5.71%

3.47%


Bloomberg Commodity Index

-5.17%

6.51%

4.32%




A&#160; &#160;From May 30, 2017
&#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.
&#160;



</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000175832_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-20652"
      unitRef="pure">-0.0545</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000175832_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-20653"
      unitRef="pure">0.0571</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000175832_NoLoadClassMember_2023-08-01_2024-07-31"
      decimals="INF"
      id="ixv-20654"
      unitRef="pure">0.0347</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000175832_0_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-20655"
      unitRef="pure">-0.0517</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000175832_0_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-20656"
      unitRef="pure">0.0651</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000175832_0_BBIndexMember_LOC"
      decimals="INF"
      id="ixv-20657"
      unitRef="pure">0.0432</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate contextRef="C000175832_ClassMember" id="ixv-1166">2017-05-30</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000175832_ClassMember" id="ixv-1184">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;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="C000175832_ClassMember" id="ixv-1188">&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="C000175832_ClassMember" id="ixv-1194">&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;span style="line-height:16px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of July 31, 2024)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;"&gt;&lt;/div&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;"&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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&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;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&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;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;43,751,003&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;"&gt;27&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;202,579&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&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;"&gt;0&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000175832_InstantMember"
      decimals="0"
      id="ixv-20658"
      unitRef="usd">43751003</us-gaap:AssetsNet>
    <oef:HoldingsCount
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      decimals="INF"
      id="ixv-20659"
      unitRef="holding">27</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
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      id="ixv-20660"
      unitRef="usd">202579</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
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      id="ixv-20661"
      unitRef="pure">0</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000175832_ClassMember" id="ixv-1275">

Energy

29.0


Agriculture

27.0


Precious Metals

22.7


Industrial Metals

15.6


Livestock

5.7




COMMODITY SECTOR DIVERSIFICATION (% of Fund's net assets)









DERIVATIVE EXPOSURE
(% of Fund's net assets)

&#160;

&#160;


Futures Contracts

100.2

&#160;


&#160;




&#160;

Futures Contracts

50.1


Short-Term Investments and Net Other Assets (Liabilities)

49.9




ASSET ALLOCATION (% of Fund's total exposure)









</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000175832_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-20662"
      unitRef="pure">0.290</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000175832_MS_AgriculturalSectorMember"
      decimals="INF"
      id="ixv-20663"
      unitRef="pure">0.270</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000175832_MS_PreciousMetalsSectorMember"
      decimals="INF"
      id="ixv-20664"
      unitRef="pure">0.227</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000175832_MS_IndustrialMetalsSectorMember"
      decimals="INF"
      id="ixv-20665"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000175832_MS_LivestockSectorMember"
      decimals="INF"
      id="ixv-20666"
      unitRef="pure">0.057</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000175832_DE_FuturesContracts_Member"
      decimals="INF"
      id="ixv-20667"
      unitRef="pure">1.002</oef:PctOfNav>
    <oef:PctOfNetLongExposure
      contextRef="C000175832_AA_FuturesContracts_Member"
      decimals="INF"
      id="ixv-20668"
      unitRef="pure">0.501</oef:PctOfNetLongExposure>
    <oef:PctOfNetLongExposure
      contextRef="C000175832_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-20669"
      unitRef="pure">0.499</oef:PctOfNetLongExposure>
    <oef:MaterialFundChngTextBlock contextRef="C000175832_ClassMember" id="ixv-1382">
&lt;div style="text-align:left;"&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;"&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;"&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 1, 2023. 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;September 28, 2024 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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&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;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund modified its principal investment strategies during the reporting period.&lt;/span&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000175832_ClassMember" id="ixv-1388">&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 1, 2023. 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;September 28, 2024 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="C000175832_ClassMember" id="ixv-1392">&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="C000175832_ClassMember" id="ixv-1395">&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="C000175832_ClassMember" id="ixv-1399">&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:MaterialFundChngStrategiesTextBlock contextRef="C000175832_ClassMember" id="ixv-1410">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund modified its principal investment strategies during the reporting period.&lt;/span&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:MaterialFundChngStrategiesTextBlock>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-1470">2024-07-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000130874_ClassMember" id="ixv-1474">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000130874_ClassMember" id="ixv-1485">Fidelity&#xae; Series Commodity Strategy Fund</oef:FundName>
    <oef:ClassName contextRef="C000130874_ClassMember" id="ixv-1488">Fidelity&#xae; Series Commodity Strategy Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000130874_ClassMember" id="ixv-1492">FCSSX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000130874_ClassMember" id="ixv-1512">This annual shareholder report contains information about Fidelity&#xae; Series Commodity Strategy Fund for the period August 1, 2023 to July 31, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000130874_ClassMember" id="ixv-1514">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000130874_ClassMember" id="ixv-1519">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.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000130874_ClassMember" id="ixv-1521">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000130874_ClassMember" id="ixv-1524">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock contextRef="C000130874_ClassMember" id="ixv-1531">&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;"&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;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:43%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="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:25%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;"&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:31%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;"&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 $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:43%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Series Commodity Strategy Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:25%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &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:super;font-weight:normal;"&gt;A&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:31%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;"&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:super;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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:super;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;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:6px;color:#000000;font-style:normal;vertical-align:super;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;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000130874_ClassMember"
      decimals="0"
      id="ixv-20670"
      unitRef="usd">0</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000130874_ClassMember"
      decimals="INF"
      id="ixv-20671"
      unitRef="pure">0.0000</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000130874_ClassMember" id="ixv-1584">&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;"&gt;&lt;span style="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-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;For the 12 months ending July 31, 2024, many commodities lost value amid often-favorable supply conditions and a stronger U.S. dollar. Others benefited amid an expanding global economy and a slowing in the pace of inflation in certain markets, as well as moves by some central banks toward monetary easing.&#160;(The following returns are stated on a total-return basis.)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;For the full 12 months, the grains group (-26%) within the agriculture sector (-16%) detracted most, hampered most by corn (-29%) and soybeans (-21%). Grains faced headwinds from a rising U.S. dollar. Also within agriculture, soybean oil (-27%) experienced weakness, while so-called softs (+9%) were led by coffee (+54%).&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;The energy sector (-13%) also detracted, hampered by a sharp decline in natural gas (-54%). However, West Texas Intermediate crude oil (+8%) and Brent crude oil (+7%) gained, benefiting from tighter supplies.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity 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 fund benefited from precious metals (+21%) amid dovish monetary policy expectations and safe-haven demand with gold and silver gaining about 22% and 15%, respectively.&#160;Elsewhere, industrial metals returned about -2%, led by copper (+7%), while nickel (-26%) lost value.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Livestock gained 2%, led by strength in the price of live cattle (+8%) partly counterbalanced by weakness in lean hogs (-7%).&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000130874_ClassMember" id="ixv-1605">How did the Fund perform over the past 10 years?
&#160;
 &#160;&#160;
CUMULATIVE PERFORMANCE
July 31, 2014 through July 31, 2024.
Initial investment of $10,000.

Fidelity&#xae; Series Commodity Strategy Fund
&#160;

$10,000

$7,129
&#160;

$6,517
&#160;

$6,542
&#160;

$6,690
&#160;

$6,300
&#160;

$5,561
&#160;

$7,776
&#160;

$9,838
&#160;

$9,023
&#160;

$8,570
&#160;


Bloomberg Commodity Index
&#160;

$10,000

$7,177
&#160;

$6,604
&#160;

$6,655
&#160;

$6,837
&#160;

$6,470
&#160;

$5,689
&#160;

$7,980
&#160;

$10,153
&#160;

$9,353
&#160;

$8,869
&#160;


&#160;

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024









</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000130874_LG_ClassMember_11YR" id="ixv-1624">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Series Commodity Strategy Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2014"
      decimals="0"
      id="ixv-20672"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2015"
      decimals="0"
      id="ixv-20673"
      unitRef="usd">7129</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-20674"
      unitRef="usd">6517</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-20675"
      unitRef="usd">6542</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-20676"
      unitRef="usd">6690</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-20677"
      unitRef="usd">6300</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-20678"
      unitRef="usd">5561</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-20679"
      unitRef="usd">7776</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-20680"
      unitRef="usd">9838</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-20681"
      unitRef="usd">9023</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-20682"
      unitRef="usd">8570</oef:AcctVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000130874_LG_1_AdditionalIndexMember_11YR"
      id="ixv-1684">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Bloomberg Commodity Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2014"
      decimals="0"
      id="ixv-20683"
      unitRef="usd">10000</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2015"
      decimals="0"
      id="ixv-20684"
      unitRef="usd">7177</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-20685"
      unitRef="usd">6604</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-20686"
      unitRef="usd">6655</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-20687"
      unitRef="usd">6837</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-20688"
      unitRef="usd">6470</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-20689"
      unitRef="usd">5689</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-20690"
      unitRef="usd">7980</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-20691"
      unitRef="usd">10153</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-20692"
      unitRef="usd">9353</oef:AcctVal>
    <oef:AcctVal
      contextRef="C000130874_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-20693"
      unitRef="usd">8869</oef:AcctVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000130874_ClassMember" id="ixv-1793">AVERAGE ANNUAL TOTAL RETURNS:
&#160;
&#160;

1 Year

5 Year

10 Year


Fidelity&#xae; Series Commodity Strategy Fund

-5.01%

6.35%

-1.53%


Bloomberg Commodity Index

-5.17%

6.51%

-1.19%




&#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.
&#160;



</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000130874_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-20694"
      unitRef="pure">-0.0501</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000130874_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-20695"
      unitRef="pure">0.0635</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000130874_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-20696"
      unitRef="pure">-0.0153</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000130874_0_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-20697"
      unitRef="pure">-0.0517</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000130874_0_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-20698"
      unitRef="pure">0.0651</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000130874_0_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-20699"
      unitRef="pure">-0.0119</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000130874_ClassMember" id="ixv-1858">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;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="C000130874_ClassMember" id="ixv-1862">&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="C000130874_ClassMember" id="ixv-1868">&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;span style="line-height:16px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of July 31, 2024)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;"&gt;&lt;/div&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;"&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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&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;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&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;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;2,193,676,783&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;"&gt;57&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;0&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;"&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;"&gt;0&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:right;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000130874_InstantMember"
      decimals="0"
      id="ixv-20700"
      unitRef="usd">2193676783</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000130874_InstantMember"
      decimals="INF"
      id="ixv-20701"
      unitRef="holding">57</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000130874_ClassMember"
      decimals="0"
      id="ixv-20702"
      unitRef="usd">0</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000130874_ClassMember"
      decimals="INF"
      id="ixv-20703"
      unitRef="pure">0</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000130874_ClassMember" id="ixv-1949">

Energy

28.9


Agriculture

26.9


Precious Metals

22.7


Industrial Metals

15.8


Livestock

5.7




COMMODITY SECTOR DIVERSIFICATION (% of Fund's net assets)









DERIVATIVE EXPOSURE
(% of Fund's net assets)

&#160;

&#160;


Futures Contracts

15.7

&#160;


Swaps

87.3

&#160;


&#160;




&#160;

Futures Contracts

7.7


Swaps

43.1


Short-Term Investments and Net Other Assets (Liabilities)

49.2




ASSET ALLOCATION (% of Fund's total exposure)









</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000130874_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-20704"
      unitRef="pure">0.289</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000130874_MS_AgriculturalSectorMember"
      decimals="INF"
      id="ixv-20705"
      unitRef="pure">0.269</oef:PctOfNav>
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      id="ixv-20708"
      unitRef="pure">0.057</oef:PctOfNav>
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      id="ixv-20709"
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      id="ixv-20710"
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    <oef:MaterialFundChngTextBlock contextRef="C000130874_ClassMember" id="ixv-2071">
&lt;div style="text-align:left;"&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;"&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;"&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 1, 2023. 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;September 28, 2024 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;.&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&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;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund modified its principal investment strategies during the reporting period.&lt;/span&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&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;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000130874_ClassMember" id="ixv-2077">&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 1, 2023. 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;September 28, 2024 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;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000130874_ClassMember" id="ixv-2081">&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="C000130874_ClassMember" id="ixv-2084">&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:MaterialFundChngStrategiesTextBlock contextRef="C000130874_ClassMember" id="ixv-2096">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fund modified its principal investment strategies during the reporting period.&lt;/span&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;"&gt;&lt;/div&gt;</oef:MaterialFundChngStrategiesTextBlock>
</xbrl>
