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    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <dei:DocumentType contextRef="Trust" id="ixv-89690">485BPOS</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-89691">2026-06-29</dei:DocumentPeriodEndDate>
    <dei:AmendmentFlag contextRef="Trust" id="ixv-89692">false</dei:AmendmentFlag>
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    <dei:EntityInvCompanyType contextRef="Trust" id="ixv-89694">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName contextRef="Trust" id="ixv-89695">Fidelity Concord Street Trust</dei:EntityRegistrantName>
    <oef:RiskReturnHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-214">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Small Cap Stock K6 Fund 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-223">
     
       
     Investment Objective 
       
    
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     Fidelity&#xae; Small Cap Stock K6 Fund seeks long-term growth of capital. 
       
    
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    <oef:ExpenseHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-233">
     
       
     Fee Table 
       
    
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      id="ixv-239">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions, which are not reflected in the tables and examples below. 
    
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      id="ixv-250">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      decimals="0"
      id="ixv-94030"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-265">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="6"
      id="ixv-94031"
      unitRef="pure">0.0060</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="6"
      id="ixv-94032"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="6"
      id="ixv-94033"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="6"
      id="ixv-94034"
      unitRef="pure">0.0060</oef:ExpensesOverAssets>
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      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-312">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="0"
      id="ixv-94035"
      unitRef="usd">61</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="0"
      id="ixv-94036"
      unitRef="usd">192</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="0"
      id="ixv-94037"
      unitRef="usd">335</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000057287_Cid_C000182863"
      decimals="0"
      id="ixv-94038"
      unitRef="usd">750</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-369">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-374">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       185 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      decimals="4"
      id="ixv-94039"
      unitRef="pure">1.85</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-383">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-388">
     
       
      
       
        Normally investing at least 80% of assets in common stocks of companies with small market capitalizations. 
      
     The Adviser generally defines small market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2000 &#xae; Index or the S&amp;P SmallCap 600 &#xae; Index. 
     Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
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      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-420">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_ForeignExposureMember"
      id="ixv-429">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-438">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-447">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_ValueInvestingMember"
      id="ixv-462">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_SmallCapInvestingMember"
      id="ixv-471">
     
       
      
      Small Cap Investing. 
      
     The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_HighPortfolioTurnoverMember"
      id="ixv-480">
     
       
      
      High Portfolio Turnover. 
      
     High portfolio turnover (more than 100%) may result in increased transaction costs and potentially higher capital gains or losses. The effects of higher than normal portfolio turnover may adversely affect the fund's performance. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-490">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-498">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-505">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-510">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.401k.com  
      
       
     and log in for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-515"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-522"> 
        
      Past performance is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-528"> 
        
      www.401k.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-533">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2018"
      decimals="INF"
      id="ixv-94040"
      unitRef="pure">-0.1201</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2019"
      decimals="INF"
      id="ixv-94041"
      unitRef="pure">0.2983</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2020"
      decimals="INF"
      id="ixv-94042"
      unitRef="pure">0.1468</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2021"
      decimals="INF"
      id="ixv-94043"
      unitRef="pure">0.2095</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2022"
      decimals="INF"
      id="ixv-94044"
      unitRef="pure">-0.2140</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2023"
      decimals="INF"
      id="ixv-94045"
      unitRef="pure">0.1993</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2024"
      decimals="INF"
      id="ixv-94046"
      unitRef="pure">0.0948</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_2025"
      decimals="INF"
      id="ixv-94047"
      unitRef="pure">0.1650</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-638">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      decimals="4"
      id="ixv-94048"
      unitRef="pure">0.2987</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-648">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-653">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      decimals="4"
      id="ixv-94049"
      unitRef="pure">-0.3322</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-664">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-669">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      decimals="4"
      id="ixv-94050"
      unitRef="pure">-0.0175</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-680">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000057287_contentCd_SLCXK6-PRO"
      id="ixv-685">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000057287_Cid_C000182863_ReturnBeforeTaxes_01"
      id="ixv-719">
         Fidelity&#xae; Small Cap Stock K6 Fund
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94051"
      unitRef="pure">0.1650</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94052"
      unitRef="pure">0.0778</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Cid_C000182863_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteSLCXK6-PROS000057287AAR_A_RBT_locC000182863"
      unitRef="pure">0.0912</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000057287_Indexid_RS002_contentCd_SLCXK6-PRO_01"
      id="ixv-734">
         Russell 2000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Indexid_RS002_contentCd_SLCXK6-PRO_01"
      decimals="4"
      id="ixv-94054"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Indexid_RS002_contentCd_SLCXK6-PRO_05"
      decimals="4"
      id="ixv-94055"
      unitRef="pure">0.0609</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Indexid_RS002_contentCd_SLCXK6-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94056"
      unitRef="pure">0.0848</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000057287_Indexid_RS003_contentCd_SLCXK6-PRO_01"
      id="ixv-759">
         Russell 3000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Indexid_RS003_contentCd_SLCXK6-PRO_01"
      decimals="4"
      id="ixv-94057"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Indexid_RS003_contentCd_SLCXK6-PRO_05"
      decimals="4"
      id="ixv-94058"
      unitRef="pure">0.1315</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057287_Indexid_RS003_contentCd_SLCXK6-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94059"
      unitRef="pure">0.1412</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000057287_Cid_C000182863" id="ixv-800">2017-05-25</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2595">
     
       
     Fund Summary 
       
     Fund /Class: 
     Fidelity&#xae; Large Cap Stock Fund 
     /Fidelity&#xae; Large Cap Stock Fund  
      
       
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2611">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2616">
     
       
     Fidelity&#xae; Large Cap Stock Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2621">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2627">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2641">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000055364_contentCd_SML-PRO"
      decimals="0"
      id="ixv-94060"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2656">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="6"
      id="footnoteS000055364SML-PROAOE_AC000174182_MF"
      unitRef="pure">0.0072</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="6"
      id="ixv-94062"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="6"
      id="ixv-94063"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="6"
      id="ixv-94064"
      unitRef="pure">0.0073</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2719">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="0"
      id="ixv-94065"
      unitRef="usd">75</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="0"
      id="ixv-94066"
      unitRef="usd">233</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="0"
      id="ixv-94067"
      unitRef="usd">406</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055364_Cid_C000174182"
      decimals="0"
      id="ixv-94068"
      unitRef="usd">906</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2776">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2781">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       25 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055364_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94069"
      unitRef="pure">0.25</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2790">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2795">
     
       
      
       
        Normally investing at least 80% of assets in common stocks of companies with large market capitalizations. 
      
     The Adviser generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 1000 &#xae; Index or the S&amp;P 500 &#xae; Index. 
     Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_SML-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-2827">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_SML-PRO_RiskMember_ForeignExposureMember"
      id="ixv-2836">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_SML-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-2845">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_SML-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-2854">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_SML-PRO_RiskMember_ValueInvestingMember"
      id="ixv-2869">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_SML-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-2879">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_SML-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-2887">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2894">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2899">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
      
       
     The index description appears in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2904"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2911"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2917"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-2922">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2016"
      decimals="INF"
      id="ixv-94070"
      unitRef="pure">0.1670</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2017"
      decimals="INF"
      id="ixv-94071"
      unitRef="pure">0.1815</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2018"
      decimals="INF"
      id="ixv-94072"
      unitRef="pure">-0.0915</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2019"
      decimals="INF"
      id="ixv-94073"
      unitRef="pure">0.3155</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2020"
      decimals="INF"
      id="ixv-94074"
      unitRef="pure">0.0900</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2021"
      decimals="INF"
      id="ixv-94075"
      unitRef="pure">0.2583</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2022"
      decimals="INF"
      id="ixv-94076"
      unitRef="pure">-0.0795</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2023"
      decimals="INF"
      id="ixv-94077"
      unitRef="pure">0.2352</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2024"
      decimals="INF"
      id="ixv-94078"
      unitRef="pure">0.2628</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2025"
      decimals="INF"
      id="ixv-94079"
      unitRef="pure">0.2757</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3033">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055364_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94080"
      unitRef="pure">0.1907</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3043">2020-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3048">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055364_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94081"
      unitRef="pure">-0.2495</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3059">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3064">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055364_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94082"
      unitRef="pure">-0.0190</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3075">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3080">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3085">
     
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances. 
       
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3088"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3095"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher contextRef="Pid_S000055364_contentCd_SML-PRO" id="ixv-3100"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_01"
      id="ixv-3145">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94083"
      unitRef="pure">0.2757</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94084"
      unitRef="pure">0.1818</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_10"
      decimals="4"
      id="ixv-94085"
      unitRef="pure">0.1527</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_01"
      id="ixv-3160">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94086"
      unitRef="pure">0.2552</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94087"
      unitRef="pure">0.1694</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_10"
      decimals="4"
      id="ixv-94088"
      unitRef="pure">0.1388</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-3175">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94089"
      unitRef="pure">0.1755</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94090"
      unitRef="pure">0.1445</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_10"
      decimals="4"
      id="ixv-94091"
      unitRef="pure">0.1234</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_SML-PRO_01"
      id="ixv-3191">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_SML-PRO_01"
      decimals="4"
      id="ixv-94092"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_SML-PRO_05"
      decimals="4"
      id="ixv-94093"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_SML-PRO_10"
      decimals="4"
      id="ixv-94094"
      unitRef="pure">0.1482</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3305">
     
       
     Fund Summary 
       
     Fund /Class: 
     Fidelity&#xae; Mid-Cap Stock Fund 
     /Fidelity&#xae; Mid-Cap Stock Fund  
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3318">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3323">
     
       
     Fidelity&#xae; Mid-Cap Stock Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3328">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3334">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3345">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000055365_contentCd_SML-PRO"
      decimals="0"
      id="ixv-94095"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3360">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="6"
      id="footnoteS000055365SML-PROAOE_AC000174183_MF"
      unitRef="pure">0.0062</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="6"
      id="ixv-94097"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="6"
      id="ixv-94098"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="6"
      id="ixv-94099"
      unitRef="pure">0.0062</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3423">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="0"
      id="ixv-94100"
      unitRef="usd">63</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="0"
      id="ixv-94101"
      unitRef="usd">199</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="0"
      id="ixv-94102"
      unitRef="usd">346</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055365_Cid_C000174183"
      decimals="0"
      id="ixv-94103"
      unitRef="usd">774</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3480">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3485">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       35 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055365_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94104"
      unitRef="pure">0.35</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3494">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3499">
     
       
      
       
        Normally investing at least 80% of assets in common stocks of companies with medium market capitalizations. 
      
     The Adviser generally defines medium market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell Midcap &#xae; Index or the S&amp;P MidCap 400 &#xae; Index. 
     Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Potentially investing in companies with smaller or larger market capitalizations. 
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-3533">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_ForeignExposureMember"
      id="ixv-3542">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-3551">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
     The value of securities of smaller issuers can be more volatile than that of larger issuers. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-3562">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_ValueInvestingMember"
      id="ixv-3577">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_MidCapInvestingMember"
      id="ixv-3586">
     
       
      
      Mid Cap Investing. 
      
     The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-3596">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_SML-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-3604">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3611">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3616">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3621"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3628"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3634"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3639">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2016"
      decimals="INF"
      id="ixv-94105"
      unitRef="pure">0.1494</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2017"
      decimals="INF"
      id="ixv-94106"
      unitRef="pure">0.1868</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2018"
      decimals="INF"
      id="ixv-94107"
      unitRef="pure">-0.0647</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2019"
      decimals="INF"
      id="ixv-94108"
      unitRef="pure">0.2535</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2020"
      decimals="INF"
      id="ixv-94109"
      unitRef="pure">0.1137</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2021"
      decimals="INF"
      id="ixv-94110"
      unitRef="pure">0.2866</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2022"
      decimals="INF"
      id="ixv-94111"
      unitRef="pure">-0.0629</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2023"
      decimals="INF"
      id="ixv-94112"
      unitRef="pure">0.1104</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2024"
      decimals="INF"
      id="ixv-94113"
      unitRef="pure">0.1459</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_2025"
      decimals="INF"
      id="ixv-94114"
      unitRef="pure">0.1182</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3750">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055365_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94115"
      unitRef="pure">0.2135</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3760">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3765">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055365_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94116"
      unitRef="pure">-0.2854</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3776">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3781">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055365_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94117"
      unitRef="pure">0.0465</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3791">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3796">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3801">
     
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances. 
       
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3804"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3811"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher contextRef="Pid_S000055365_contentCd_SML-PRO" id="ixv-3816"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000174183_ReturnBeforeTaxes_01"
      id="ixv-3861">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94118"
      unitRef="pure">0.1182</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94119"
      unitRef="pure">0.1140</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_ReturnBeforeTaxes_10"
      decimals="4"
      id="ixv-94120"
      unitRef="pure">0.1182</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributions_01"
      id="ixv-3876">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94121"
      unitRef="pure">0.1129</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94122"
      unitRef="pure">0.0976</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributions_10"
      decimals="4"
      id="ixv-94123"
      unitRef="pure">0.0983</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-3891">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94124"
      unitRef="pure">0.0731</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94125"
      unitRef="pure">0.0877</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174183_AfterTaxesOnDistributionsAndSales_10"
      decimals="4"
      id="ixv-94126"
      unitRef="pure">0.0915</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_SML-PRO_01"
      id="ixv-3907">
         S&amp;P MidCap 400&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_SML-PRO_01"
      decimals="4"
      id="ixv-94127"
      unitRef="pure">0.0750</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_SML-PRO_05"
      decimals="4"
      id="ixv-94128"
      unitRef="pure">0.0912</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_SML-PRO_10"
      decimals="4"
      id="ixv-94129"
      unitRef="pure">0.1072</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_SML-PRO_01"
      id="ixv-3932">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_SML-PRO_01"
      decimals="4"
      id="ixv-94130"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_SML-PRO_05"
      decimals="4"
      id="ixv-94131"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_SML-PRO_10"
      decimals="4"
      id="ixv-94132"
      unitRef="pure">0.1482</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4047">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Small Cap Stock Fund 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4056">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4061">
     
       
     Fidelity&#xae; Small Cap Stock Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4066">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4072">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4083">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000055369_contentCd_SML-PRO"
      decimals="0"
      id="ixv-94133"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4098">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="6"
      id="footnoteS000055369SML-PROAOE_AC000174190_MF"
      unitRef="pure">0.0085</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="6"
      id="ixv-94135"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="6"
      id="ixv-94136"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="6"
      id="ixv-94137"
      unitRef="pure">0.0086</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4162">
     
       
      
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="0"
      id="ixv-94138"
      unitRef="usd">88</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="0"
      id="ixv-94139"
      unitRef="usd">274</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="0"
      id="ixv-94140"
      unitRef="usd">477</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055369_Cid_C000174190"
      decimals="0"
      id="ixv-94141"
      unitRef="usd">1061</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4220">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4225">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       159 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055369_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94142"
      unitRef="pure">1.59</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4234">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4239">
     
       
      
       
        Normally investing at least 80% of assets in common stocks of companies with small market capitalizations. 
      
     The Adviser generally defines small market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2000 &#xae; Index or the S&amp;P SmallCap 600 &#xae; Index. 
     Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-4271">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_ForeignExposureMember"
      id="ixv-4280">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-4289">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-4298">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_ValueInvestingMember"
      id="ixv-4313">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_SmallCapInvestingMember"
      id="ixv-4322">
     
       
      
      Small Cap Investing. 
      
     The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_HighPortfolioTurnoverMember"
      id="ixv-4331">
     
       
      
      High Portfolio Turnover. 
      
     High portfolio turnover (more than 100%) may result in increased transaction costs and potentially higher capital gains or losses. The effects of higher than normal portfolio turnover may adversely affect the fund's performance. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-4341">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055369_contentCd_SML-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-4349">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4356">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4361">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4366"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4373"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4379"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4384">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2016"
      decimals="INF"
      id="ixv-94143"
      unitRef="pure">0.1294</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2017"
      decimals="INF"
      id="ixv-94144"
      unitRef="pure">0.1384</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2018"
      decimals="INF"
      id="ixv-94145"
      unitRef="pure">-0.1156</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2019"
      decimals="INF"
      id="ixv-94146"
      unitRef="pure">0.2946</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2020"
      decimals="INF"
      id="ixv-94147"
      unitRef="pure">0.1380</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2021"
      decimals="INF"
      id="ixv-94148"
      unitRef="pure">0.2023</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2022"
      decimals="INF"
      id="ixv-94149"
      unitRef="pure">-0.2254</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2023"
      decimals="INF"
      id="ixv-94150"
      unitRef="pure">0.1970</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2024"
      decimals="INF"
      id="ixv-94151"
      unitRef="pure">0.0928</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_2025"
      decimals="INF"
      id="ixv-94152"
      unitRef="pure">0.1517</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4495">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055369_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94153"
      unitRef="pure">0.2980</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4505">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4510">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055369_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94154"
      unitRef="pure">-0.3333</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4521">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4526">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055369_contentCd_SML-PRO"
      decimals="4"
      id="ixv-94155"
      unitRef="pure">-0.0190</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4537">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4542">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4547">
     
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances. 
       
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4550"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4557"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher contextRef="Pid_S000055369_contentCd_SML-PRO" id="ixv-4562"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055369_Cid_C000174190_ReturnBeforeTaxes_01"
      id="ixv-4607">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94156"
      unitRef="pure">0.1517</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94157"
      unitRef="pure">0.0701</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_ReturnBeforeTaxes_10"
      decimals="4"
      id="ixv-94158"
      unitRef="pure">0.0892</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributions_01"
      id="ixv-4622">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94159"
      unitRef="pure">0.1087</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94160"
      unitRef="pure">0.0446</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributions_10"
      decimals="4"
      id="ixv-94161"
      unitRef="pure">0.0674</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-4637">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94162"
      unitRef="pure">0.1094</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94163"
      unitRef="pure">0.0489</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Cid_C000174190_AfterTaxesOnDistributionsAndSales_10"
      decimals="4"
      id="ixv-94164"
      unitRef="pure">0.0664</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055369_Indexid_RS002_contentCd_SML-PRO_01"
      id="ixv-4653">
         Russell 2000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Indexid_RS002_contentCd_SML-PRO_01"
      decimals="4"
      id="ixv-94165"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Indexid_RS002_contentCd_SML-PRO_05"
      decimals="4"
      id="ixv-94166"
      unitRef="pure">0.0609</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Indexid_RS002_contentCd_SML-PRO_10"
      decimals="4"
      id="ixv-94167"
      unitRef="pure">0.0962</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055369_Indexid_RS003_contentCd_SML-PRO_01"
      id="ixv-4678">
         Russell 3000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Indexid_RS003_contentCd_SML-PRO_01"
      decimals="4"
      id="ixv-94168"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Indexid_RS003_contentCd_SML-PRO_05"
      decimals="4"
      id="ixv-94169"
      unitRef="pure">0.1315</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055369_Indexid_RS003_contentCd_SML-PRO_10"
      decimals="4"
      id="ixv-94170"
      unitRef="pure">0.1429</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8705">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Small Cap Discovery Fund 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8714">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8719">
     
       
     Fidelity&#xae; Small Cap Discovery Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8724">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8730">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8741">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000055370_contentCd_SMR-PRO"
      decimals="0"
      id="ixv-94171"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8756">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="6"
      id="footnoteS000055370SMR-PROAOE_AC000174191_MF"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="6"
      id="ixv-94173"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="6"
      id="ixv-94174"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="6"
      id="ixv-94175"
      unitRef="pure">0.0066</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8815">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="0"
      id="ixv-94176"
      unitRef="usd">67</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="0"
      id="ixv-94177"
      unitRef="usd">211</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="0"
      id="ixv-94178"
      unitRef="usd">368</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055370_Cid_C000174191"
      decimals="0"
      id="ixv-94179"
      unitRef="usd">822</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8872">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8877">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       64 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055370_contentCd_SMR-PRO"
      decimals="4"
      id="ixv-94180"
      unitRef="pure">0.64</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8886">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8891">
     
       
      
       
        Normally investing primarily in common stocks. 
      Normally investing at least 80% of assets in securities of companies with small market capitalizations. 
      The Adviser generally defines small market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2000 &#xae; Index or the S&amp;P SmallCap 600 &#xae; Index. 
      
      
       Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-8923">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_ForeignExposureMember"
      id="ixv-8932">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-8941">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-8950">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_ValueInvestingMember"
      id="ixv-8965">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_SmallCapInvestingMember"
      id="ixv-8974">
     
       
      
      Small Cap Investing. 
      
     The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-8984">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055370_contentCd_SMR-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-8992">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-8999">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9004">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9009"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9016"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9022"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9027">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2016"
      decimals="INF"
      id="ixv-94181"
      unitRef="pure">0.2029</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2017"
      decimals="INF"
      id="ixv-94182"
      unitRef="pure">0.0791</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2018"
      decimals="INF"
      id="ixv-94183"
      unitRef="pure">-0.1375</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2019"
      decimals="INF"
      id="ixv-94184"
      unitRef="pure">0.2727</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2020"
      decimals="INF"
      id="ixv-94185"
      unitRef="pure">0.0689</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2021"
      decimals="INF"
      id="ixv-94186"
      unitRef="pure">0.3567</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2022"
      decimals="INF"
      id="ixv-94187"
      unitRef="pure">-0.1646</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2023"
      decimals="INF"
      id="ixv-94188"
      unitRef="pure">0.2132</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2024"
      decimals="INF"
      id="ixv-94189"
      unitRef="pure">0.0285</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_2025"
      decimals="INF"
      id="ixv-94190"
      unitRef="pure">0.1091</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9138">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055370_contentCd_SMR-PRO"
      decimals="4"
      id="ixv-94191"
      unitRef="pure">0.3045</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9148">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9153">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055370_contentCd_SMR-PRO"
      decimals="4"
      id="ixv-94192"
      unitRef="pure">-0.3656</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9164">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9169">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055370_contentCd_SMR-PRO"
      decimals="4"
      id="ixv-94193"
      unitRef="pure">-0.0176</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9180">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9185">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9190">
     
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances. 
       
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9193"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9200"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher contextRef="Pid_S000055370_contentCd_SMR-PRO" id="ixv-9205"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055370_Cid_C000174191_ReturnBeforeTaxes_01"
      id="ixv-9250">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94194"
      unitRef="pure">0.1091</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94195"
      unitRef="pure">0.0942</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_ReturnBeforeTaxes_10"
      decimals="4"
      id="ixv-94196"
      unitRef="pure">0.0910</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributions_01"
      id="ixv-9265">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94197"
      unitRef="pure">0.0701</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94198"
      unitRef="pure">0.0684</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributions_10"
      decimals="4"
      id="ixv-94199"
      unitRef="pure">0.0654</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-9280">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94200"
      unitRef="pure">0.0847</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94201"
      unitRef="pure">0.0704</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Cid_C000174191_AfterTaxesOnDistributionsAndSales_10"
      decimals="4"
      id="ixv-94202"
      unitRef="pure">0.0678</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055370_Indexid_RS002_contentCd_SMR-PRO_01"
      id="ixv-9296">
         Russell 2000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Indexid_RS002_contentCd_SMR-PRO_01"
      decimals="4"
      id="ixv-94203"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Indexid_RS002_contentCd_SMR-PRO_05"
      decimals="4"
      id="ixv-94204"
      unitRef="pure">0.0609</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Indexid_RS002_contentCd_SMR-PRO_10"
      decimals="4"
      id="ixv-94205"
      unitRef="pure">0.0962</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055370_Indexid_RS003_contentCd_SMR-PRO_01"
      id="ixv-9321">
         Russell 3000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Indexid_RS003_contentCd_SMR-PRO_01"
      decimals="4"
      id="ixv-94206"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Indexid_RS003_contentCd_SMR-PRO_05"
      decimals="4"
      id="ixv-94207"
      unitRef="pure">0.1315</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055370_Indexid_RS003_contentCd_SMR-PRO_10"
      decimals="4"
      id="ixv-94208"
      unitRef="pure">0.1429</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11409">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Series Small Cap Discovery Fund 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11418">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11423">
     
       
     Fidelity&#xae; Series Small Cap Discovery Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11428">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11434">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11444">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      decimals="0"
      id="ixv-94209"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11459">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="6"
      id="ixv-94210"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="6"
      id="ixv-94211"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="6"
      id="ixv-94212"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="6"
      id="ixv-94213"
      unitRef="pure">0.0000</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11506">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="0"
      id="ixv-94214"
      unitRef="usd">0</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="0"
      id="ixv-94215"
      unitRef="usd">0</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="0"
      id="ixv-94216"
      unitRef="usd">0</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055368_Cid_C000174188"
      decimals="0"
      id="ixv-94217"
      unitRef="usd">0</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11563">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11568">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       71 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      decimals="4"
      id="ixv-94218"
      unitRef="pure">0.71</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11577">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11582">
     
       
      
       
        Normally investing primarily in common stocks. 
      Normally investing at least 80% of assets in securities of companies with small market capitalizations. 
      The Adviser generally defines small market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2000 &#xae; Index or the S&amp;P SmallCap 600 &#xae; Index. 
      
      
       Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-11614">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_ForeignExposureMember"
      id="ixv-11623">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-11632">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-11641">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_ValueInvestingMember"
      id="ixv-11656">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_SmallCapInvestingMember"
      id="ixv-11665">
     
       
      
      Small Cap Investing. 
      
     The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-11674">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-11682">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11689">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11694">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear 
       
     in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     The performance shown does not reflect the impact of any fees paid at the fee-based account or plan level, if applicable. 
     Visit 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11699"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11708"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11716"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11721">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2016"
      decimals="INF"
      id="ixv-94219"
      unitRef="pure">0.1876</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2017"
      decimals="INF"
      id="ixv-94220"
      unitRef="pure">0.0959</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2018"
      decimals="INF"
      id="ixv-94221"
      unitRef="pure">-0.1268</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2019"
      decimals="INF"
      id="ixv-94222"
      unitRef="pure">0.3001</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2020"
      decimals="INF"
      id="ixv-94223"
      unitRef="pure">0.0964</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2021"
      decimals="INF"
      id="ixv-94224"
      unitRef="pure">0.3631</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2022"
      decimals="INF"
      id="ixv-94225"
      unitRef="pure">-0.1612</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2023"
      decimals="INF"
      id="ixv-94226"
      unitRef="pure">0.2177</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2024"
      decimals="INF"
      id="ixv-94227"
      unitRef="pure">0.0318</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_2025"
      decimals="INF"
      id="ixv-94228"
      unitRef="pure">0.1163</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11832">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      decimals="4"
      id="ixv-94229"
      unitRef="pure">0.3185</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11842">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11847">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      decimals="4"
      id="ixv-94230"
      unitRef="pure">-0.3565</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11858">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11863">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      decimals="4"
      id="ixv-94231"
      unitRef="pure">-0.0182</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11874">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11879">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11884">
     
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances. 
       
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11887"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11894"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="Pid_S000055368_contentCd_XS4-PRO"
      id="ixv-11899"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055368_Cid_C000174188_ReturnBeforeTaxes_01"
      id="ixv-11944">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94232"
      unitRef="pure">0.1163</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94233"
      unitRef="pure">0.0991</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_ReturnBeforeTaxes_10"
      decimals="4"
      id="ixv-94234"
      unitRef="pure">0.1002</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributions_01"
      id="ixv-11959">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94235"
      unitRef="pure">0.0854</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94236"
      unitRef="pure">0.0653</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributions_10"
      decimals="4"
      id="ixv-94237"
      unitRef="pure">0.0766</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-11974">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94238"
      unitRef="pure">0.0815</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94239"
      unitRef="pure">0.0704</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Cid_C000174188_AfterTaxesOnDistributionsAndSales_10"
      decimals="4"
      id="ixv-94240"
      unitRef="pure">0.0755</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055368_Indexid_RS002_contentCd_XS4-PRO_01"
      id="ixv-11990">
         Russell 2000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Indexid_RS002_contentCd_XS4-PRO_01"
      decimals="4"
      id="ixv-94241"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Indexid_RS002_contentCd_XS4-PRO_05"
      decimals="4"
      id="ixv-94242"
      unitRef="pure">0.0609</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Indexid_RS002_contentCd_XS4-PRO_10"
      decimals="4"
      id="ixv-94243"
      unitRef="pure">0.0962</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055368_Indexid_RS003_contentCd_XS4-PRO_01"
      id="ixv-12015">
         Russell 3000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Indexid_RS003_contentCd_XS4-PRO_01"
      decimals="4"
      id="ixv-94244"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Indexid_RS003_contentCd_XS4-PRO_05"
      decimals="4"
      id="ixv-94245"
      unitRef="pure">0.1315</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055368_Indexid_RS003_contentCd_XS4-PRO_10"
      decimals="4"
      id="ixv-94246"
      unitRef="pure">0.1429</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13582">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Large Cap Stock K6 Fund 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13591">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13596">
     
       
     Fidelity&#xae; Large Cap Stock K6 Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13601">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13607">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13618">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      decimals="0"
      id="ixv-94247"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13633">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="6"
      id="ixv-94248"
      unitRef="pure">0.0045</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="6"
      id="ixv-94249"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="6"
      id="ixv-94250"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="6"
      id="ixv-94251"
      unitRef="pure">0.0045</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13680">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="0"
      id="ixv-94252"
      unitRef="usd">46</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="0"
      id="ixv-94253"
      unitRef="usd">144</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="0"
      id="ixv-94254"
      unitRef="usd">252</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000057286_Cid_C000182862"
      decimals="0"
      id="ixv-94255"
      unitRef="usd">567</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13737">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13742">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       18 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      decimals="4"
      id="ixv-94256"
      unitRef="pure">0.18</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13751">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13756">
     
       
      
       
        Normally investing at least 80% of assets in common stocks of companies with large market capitalizations. 
      
     The Adviser generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 1000 &#xae; Index or the S&amp;P 500 &#xae; Index. 
     Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-13788">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO_RiskMember_ForeignExposureMember"
      id="ixv-13797">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-13806">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-13815">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO_RiskMember_ValueInvestingMember"
      id="ixv-13830">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-13840">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-13848">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13855">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13860">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
      
       
     The index description appears in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.401k.com  
      
       
     and log in for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13865"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13872"> 
        
      Past performance is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13878"> 
        
      www.401k.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13883">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2018"
      decimals="INF"
      id="ixv-94257"
      unitRef="pure">-0.0851</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2019"
      decimals="INF"
      id="ixv-94258"
      unitRef="pure">0.3146</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2020"
      decimals="INF"
      id="ixv-94259"
      unitRef="pure">0.0912</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2021"
      decimals="INF"
      id="ixv-94260"
      unitRef="pure">0.2566</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2022"
      decimals="INF"
      id="ixv-94261"
      unitRef="pure">-0.0567</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2023"
      decimals="INF"
      id="ixv-94262"
      unitRef="pure">0.2393</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2024"
      decimals="INF"
      id="ixv-94263"
      unitRef="pure">0.2633</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_2025"
      decimals="INF"
      id="ixv-94264"
      unitRef="pure">0.2736</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13988">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      decimals="4"
      id="ixv-94265"
      unitRef="pure">0.1934</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-13998">2020-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-14003">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      decimals="4"
      id="ixv-94266"
      unitRef="pure">-0.2488</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-14014">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-14019">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      decimals="4"
      id="ixv-94267"
      unitRef="pure">-0.0182</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-14030">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000057286_contentCd_LCSK6-PRO"
      id="ixv-14035">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000057286_Cid_C000182862_ReturnBeforeTaxes_01"
      id="ixv-14069">
         Fidelity&#xae; Large Cap Stock K6 Fund
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94268"
      unitRef="pure">0.2736</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94269"
      unitRef="pure">0.1877</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057286_Cid_C000182862_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteLCSK6-PROS000057286AAR_A_RBT_locC000182862"
      unitRef="pure">0.1556</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000057286_Indexid_SP001_contentCd_LCSK6-PRO_01"
      id="ixv-14084">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057286_Indexid_SP001_contentCd_LCSK6-PRO_01"
      decimals="4"
      id="ixv-94271"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057286_Indexid_SP001_contentCd_LCSK6-PRO_05"
      decimals="4"
      id="ixv-94272"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000057286_Indexid_SP001_contentCd_LCSK6-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94273"
      unitRef="pure">0.1476</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000057286_Cid_C000182862" id="ixv-14125">2017-05-25</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15835">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Mid-Cap Stock K6 Fund 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15844">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15849">
     
       
     Fidelity&#xae; Mid-Cap Stock K6 Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15854">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15860">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15871">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      decimals="0"
      id="ixv-94274"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15886">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="6"
      id="ixv-94275"
      unitRef="pure">0.0045</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="6"
      id="ixv-94276"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="6"
      id="ixv-94277"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="6"
      id="ixv-94278"
      unitRef="pure">0.0045</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15933">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="0"
      id="ixv-94279"
      unitRef="usd">46</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="0"
      id="ixv-94280"
      unitRef="usd">144</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="0"
      id="ixv-94281"
      unitRef="usd">252</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000065697_Cid_C000212500"
      decimals="0"
      id="ixv-94282"
      unitRef="usd">567</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15990">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-15995">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       38 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      decimals="4"
      id="ixv-94283"
      unitRef="pure">0.38</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16004">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16009">
     
       
      
       
        Normally investing at least 80% of assets in common stocks of companies with medium market capitalizations. 
      
     The Adviser generally defines medium market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell Midcap &#xae; Index or the S&amp;P MidCap 400 &#xae; Index. 
     Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Potentially investing in companies with smaller or larger market capitalizations. 
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-16043">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_ForeignExposureMember"
      id="ixv-16052">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-16061">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
     The value of securities of smaller issuers can be more volatile than that of larger issuers. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-16072">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_ValueInvestingMember"
      id="ixv-16087">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_MidCapInvestingMember"
      id="ixv-16096">
     
       
      
      Mid Cap Investing. 
      
     The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-16106">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-16114">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16121">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16126">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.401k.com  
      
       
     and log in for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16131"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16138"> 
        
      Past performance is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16144"> 
        
      www.401k.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16149">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_2020"
      decimals="INF"
      id="ixv-94284"
      unitRef="pure">0.1127</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_2021"
      decimals="INF"
      id="ixv-94285"
      unitRef="pure">0.2714</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_2022"
      decimals="INF"
      id="ixv-94286"
      unitRef="pure">-0.0592</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_2023"
      decimals="INF"
      id="ixv-94287"
      unitRef="pure">0.1156</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_2024"
      decimals="INF"
      id="ixv-94288"
      unitRef="pure">0.1471</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_2025"
      decimals="INF"
      id="ixv-94289"
      unitRef="pure">0.1107</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16247">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      decimals="4"
      id="ixv-94290"
      unitRef="pure">0.2155</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16257">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16262">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      decimals="4"
      id="ixv-94291"
      unitRef="pure">-0.2878</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16273">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16278">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      decimals="4"
      id="ixv-94292"
      unitRef="pure">0.0431</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16288">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000065697_contentCd_MCS-K6-PRO"
      id="ixv-16293">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000065697_Cid_C000212500_ReturnBeforeTaxes_01"
      id="ixv-16327">
         Fidelity&#xae; Mid-Cap Stock K6 Fund
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94293"
      unitRef="pure">0.1107</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94294"
      unitRef="pure">0.1120</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Cid_C000212500_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteMCS-K6-PROS000065697AAR_A_RBT_locC000212500"
      unitRef="pure">0.1166</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000065697_Indexid_SP004_contentCd_MCS-K6-PRO_01"
      id="ixv-16342">
         S&amp;P MidCap 400&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Indexid_SP004_contentCd_MCS-K6-PRO_01"
      decimals="4"
      id="ixv-94296"
      unitRef="pure">0.0750</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Indexid_SP004_contentCd_MCS-K6-PRO_05"
      decimals="4"
      id="ixv-94297"
      unitRef="pure">0.0912</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Indexid_SP004_contentCd_MCS-K6-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94298"
      unitRef="pure">0.1041</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000065697_Indexid_SP001_contentCd_MCS-K6-PRO_01"
      id="ixv-16367">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Indexid_SP001_contentCd_MCS-K6-PRO_01"
      decimals="4"
      id="ixv-94299"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Indexid_SP001_contentCd_MCS-K6-PRO_05"
      decimals="4"
      id="ixv-94300"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000065697_Indexid_SP001_contentCd_MCS-K6-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94301"
      unitRef="pure">0.1584</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000065697_Cid_C000212500" id="ixv-16408">2019-06-13</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18162">
     
       
     Fund Summary 
       
     Fund /Class: 
     Fidelity&#xae; Mid-Cap Stock Fund 
     /K &#160; 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18177">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18182">
     
       
     Fidelity&#xae; Mid-Cap Stock Fund seeks long-term growth of capital. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18187">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18193">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18204">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      decimals="0"
      id="ixv-94302"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18219">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="6"
      id="footnoteS000055365MCS-K-PROAOE_AC000174184_MF"
      unitRef="pure">0.0054</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="6"
      id="ixv-94304"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="6"
      id="ixv-94305"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="6"
      id="ixv-94306"
      unitRef="pure">0.0055</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18282">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="0"
      id="ixv-94307"
      unitRef="usd">56</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="0"
      id="ixv-94308"
      unitRef="usd">176</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="0"
      id="ixv-94309"
      unitRef="usd">307</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055365_Cid_C000174184"
      decimals="0"
      id="ixv-94310"
      unitRef="usd">689</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18339">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18344">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       35 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      decimals="4"
      id="ixv-94311"
      unitRef="pure">0.35</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18353">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18358">
     
       
      
       
        Normally investing at least 80% of assets in common stocks of companies with medium market capitalizations. 
      
     The Adviser generally defines medium market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell Midcap &#xae; Index or the S&amp;P MidCap 400 &#xae; Index. 
     Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Potentially investing in companies with smaller or larger market capitalizations. 
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-18392">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_ForeignExposureMember"
      id="ixv-18401">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-18410">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
     The value of securities of smaller issuers can be more volatile than that of larger issuers. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-18421">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_ValueInvestingMember"
      id="ixv-18436">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_MidCapInvestingMember"
      id="ixv-18445">
     
       
      
      Mid Cap Investing. 
      
     The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-18455">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-18463">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18470">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18475">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.401k.com  
      
       
     and log in for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18480"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18487"> 
        
      Past performance is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18493"> 
        
      www.401k.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18498">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2016"
      decimals="INF"
      id="ixv-94312"
      unitRef="pure">0.1510</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2017"
      decimals="INF"
      id="ixv-94313"
      unitRef="pure">0.1880</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2018"
      decimals="INF"
      id="ixv-94314"
      unitRef="pure">-0.0636</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2019"
      decimals="INF"
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    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2020"
      decimals="INF"
      id="ixv-94316"
      unitRef="pure">0.1151</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2021"
      decimals="INF"
      id="ixv-94317"
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    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2022"
      decimals="INF"
      id="ixv-94318"
      unitRef="pure">-0.0619</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2023"
      decimals="INF"
      id="ixv-94319"
      unitRef="pure">0.1114</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2024"
      decimals="INF"
      id="ixv-94320"
      unitRef="pure">0.1469</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_2025"
      decimals="INF"
      id="ixv-94321"
      unitRef="pure">0.1189</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
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          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      decimals="4"
      id="ixv-94322"
      unitRef="pure">0.2139</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
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    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
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          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      decimals="4"
      id="ixv-94323"
      unitRef="pure">-0.2853</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18635">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18640">
          &#160;&#160;&#160;Year-to-Date Return
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    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      decimals="4"
      id="ixv-94324"
      unitRef="pure">0.0468</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18650">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000055365_contentCd_MCS-K-PRO"
      id="ixv-18655">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000174184_ReturnBeforeTaxes_01"
      id="ixv-18688">
         Class K
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94325"
      unitRef="pure">0.1189</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94326"
      unitRef="pure">0.1149</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000174184_ReturnBeforeTaxes_10"
      decimals="4"
      id="ixv-94327"
      unitRef="pure">0.1193</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_MCS-K-PRO_01"
      id="ixv-18702">
         S&amp;P MidCap 400&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_MCS-K-PRO_01"
      decimals="4"
      id="ixv-94328"
      unitRef="pure">0.0750</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_MCS-K-PRO_05"
      decimals="4"
      id="ixv-94329"
      unitRef="pure">0.0912</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_MCS-K-PRO_10"
      decimals="4"
      id="ixv-94330"
      unitRef="pure">0.1072</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_MCS-K-PRO_01"
      id="ixv-18727">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_MCS-K-PRO_01"
      decimals="4"
      id="ixv-94331"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_MCS-K-PRO_05"
      decimals="4"
      id="ixv-94332"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_MCS-K-PRO_10"
      decimals="4"
      id="ixv-94333"
      unitRef="pure">0.1482</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20599">
     
       
     Fund Summary 
       
     Fund /Class: 
     Fidelity&#xae; Founders Fund 
     /Fidelity&#xae; Founders Fund  
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20612">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20617">
     
       
     Fidelity&#xae; Founders Fund seeks capital appreciation. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20622">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20628">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20639">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      decimals="0"
      id="ixv-94334"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20654">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="6"
      id="footnoteS000064789RFFF-PROAOE_AC000209806_MF"
      unitRef="pure">0.0073</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="6"
      id="ixv-94336"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="6"
      id="ixv-94337"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="6"
      id="ixv-94338"
      unitRef="pure">0.0080</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20709">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="0"
      id="ixv-94339"
      unitRef="usd">82</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="0"
      id="ixv-94340"
      unitRef="usd">255</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="0"
      id="ixv-94341"
      unitRef="usd">444</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000064789_Cid_C000209806"
      decimals="0"
      id="ixv-94342"
      unitRef="usd">990</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20766">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20771">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       72 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      decimals="4"
      id="ixv-94343"
      unitRef="pure">0.72</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20780">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20785">
     
       
      
       Normally investing primarily in equity securities. 
      
       
        Normally investing at least 80% of assets in securities of founder-involved companies. 
      
     The Adviser considers a number of factors in determining whether a company is a founder-involved company, including whether a founder or founder family member is a member of the senior management team or the company's board of directors at the time of investment or within the past five years and a founder's personal or family share ownership in the company. Whether a company is a founder-involved company can be determined under any of these factors. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Using quantitative analysis to evaluate growth potential, valuation, liquidity, and investment risk, along with fundamental analysis of factors such as each issuer's financial condition, its industry position, and market and economic conditions to select investments. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Investing in securities of domestic and foreign issuers. 
      
      
       
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-20811">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_ForeignExposureMember"
      id="ixv-20820">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-20829">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
     Founder-involved companies may have capital structures that give founders control over all or a substantial majority of the company's voting stock and, as a result, give such founders the ability to control matters submitted to stockholders for approval, including the election, removal, and replacement of directors and any merger, consolidation, or sale of all or substantially all of the company's assets. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-20840">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_ValueInvestingMember"
      id="ixv-20855">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_QuantitativeInvestingMember"
      id="ixv-20864">
     
       
      
      Quantitative Investing. 
      
     Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_ManagementRiskMember"
      id="ixv-20873">
     
       
      
      Management Risk. 
      
     The Adviser's application of the founder-involved strategy may not achieve its intended results. The fund could underperform in comparison to other funds with a similar benchmark or similar objectives and investment strategies. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-20883">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-20891">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20898">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20903">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
      
       
     The index description appears in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     Visit 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20908"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20915"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20921"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-20926">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_2020"
      decimals="INF"
      id="ixv-94344"
      unitRef="pure">0.4720</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_2021"
      decimals="INF"
      id="ixv-94345"
      unitRef="pure">0.1896</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_2022"
      decimals="INF"
      id="ixv-94346"
      unitRef="pure">-0.2665</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_2023"
      decimals="INF"
      id="ixv-94347"
      unitRef="pure">0.3395</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_2024"
      decimals="INF"
      id="ixv-94348"
      unitRef="pure">0.3209</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_2025"
      decimals="INF"
      id="ixv-94349"
      unitRef="pure">0.1637</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21024">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      decimals="4"
      id="ixv-94350"
      unitRef="pure">0.3474</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21034">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21039">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      decimals="4"
      id="ixv-94351"
      unitRef="pure">-0.1898</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21050">2022-06-30</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21055">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      decimals="4"
      id="ixv-94352"
      unitRef="pure">-0.0698</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21066">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21071">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21076">
     
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances. 
       
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21079"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21086"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="Pid_S000064789_contentCd_RFFF-PRO"
      id="ixv-21091"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209806_ReturnBeforeTaxes_01"
      id="ixv-21138">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94353"
      unitRef="pure">0.1637</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94354"
      unitRef="pure">0.1243</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteRFFF-PROS000064789AAR_A_RBT_loc"
      unitRef="pure">0.1769</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributions_01"
      id="ixv-21154">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94356"
      unitRef="pure">0.1564</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94357"
      unitRef="pure">0.1162</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributions_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteRFFF-PROS000064789AAR_A_ATD_loc"
      unitRef="pure">0.1707</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-21170">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94359"
      unitRef="pure">0.1011</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94360"
      unitRef="pure">0.0971</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209806_AfterTaxesOnDistributionsAndSales_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteRFFF-PROS000064789AAR_A_ATDS_loc"
      unitRef="pure">0.1454</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_RFFF-PRO_01"
      id="ixv-21187">
         Russell 3000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_RFFF-PRO_01"
      decimals="4"
      id="ixv-94362"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_RFFF-PRO_05"
      decimals="4"
      id="ixv-94363"
      unitRef="pure">0.1315</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_RFFF-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94364"
      unitRef="pure">0.1524</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000064789_Cid_C000209806" id="ixv-21228">2019-02-14</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23332">
     
       
     Fund Summary 
       
     Fund /Class: 
     Fidelity&#xae; Founders Fund 
     /Fidelity Advisor&#xae; Founders Fund A, M, C, I, Z &#160; 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23347">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23352">
     
       
     Fidelity&#xae; Founders Fund seeks capital appreciation. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23357">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23363">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 
      
        
      You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $ 
        
       
         
       50,000 
         
       
        
      in the fund or certain other Fidelity 
        
      &#xae; 
        
      funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution" section beginning on page 33 
        
      of the prospectus 
        
      
       
     and in the sales charge 
       
     waiver appendix to the prospectus. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ExpenseBreakpointDiscounts
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23369"> 
        
      You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $ 
        
       
         
       50,000 
         
       
        
      in the fund or certain other Fidelity 
        
      &#xae; 
        
      funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution" section beginning on page 33 
        
      of the prospectus 
        
     </oef:ExpenseBreakpointDiscounts>
    <oef:ExpenseBreakpointMinimumInvestmentRequiredAmount
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      decimals="0"
      id="ixv-94365"
      unitRef="usd">50000</oef:ExpenseBreakpointMinimumInvestmentRequiredAmount>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23388">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="4"
      id="ixv-94366"
      unitRef="pure">0.0575</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="4"
      id="ixv-94367"
      unitRef="pure">0.0350</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="4"
      id="ixv-94368"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="4"
      id="ixv-94369"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="4"
      id="ixv-94370"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="4"
      id="footnoteFFF-PROS000064789SHF_AC000209808"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="4"
      id="footnoteFFF-PROS000064789SHF_AC000209810"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="4"
      id="footnoteFFF-PROS000064789SHF_BC000209809"
      unitRef="pure">0.0100</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="4"
      id="ixv-94374"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="4"
      id="ixv-94375"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:ExpensesDeferredChargesTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23494"> 
        
      Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively. 
        
     </oef:ExpensesDeferredChargesTextBlock>
    <oef:ExpensesDeferredChargesTextBlock contextRef="Pid_S000064789_Cid_C000209809" id="ixv-23504"> 
        
      On Class C shares redeemed less than one year after purchase. 
        
     </oef:ExpensesDeferredChargesTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23509">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="6"
      id="footnoteS000064789FFF-PROAOE_AC000209808_MF"
      unitRef="pure">0.0078</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="6"
      id="footnoteS000064789FFF-PROAOE_AC000209810_MF"
      unitRef="pure">0.0078</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="6"
      id="footnoteS000064789FFF-PROAOE_AC000209809_MF"
      unitRef="pure">0.0078</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="6"
      id="footnoteS000064789FFF-PROAOE_AC000209811_MF"
      unitRef="pure">0.0072</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="6"
      id="footnoteS000064789FFF-PROAOE_AC000209807_MF"
      unitRef="pure">0.0063</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="6"
      id="ixv-94381"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="6"
      id="ixv-94382"
      unitRef="pure">0.0050</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="6"
      id="ixv-94383"
      unitRef="pure">0.0100</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="6"
      id="ixv-94384"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="6"
      id="ixv-94385"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="6"
      id="ixv-94386"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="6"
      id="ixv-94387"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="6"
      id="ixv-94388"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="6"
      id="ixv-94389"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="6"
      id="ixv-94390"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="6"
      id="ixv-94391"
      unitRef="pure">0.0110</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="6"
      id="ixv-94392"
      unitRef="pure">0.0135</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="6"
      id="ixv-94393"
      unitRef="pure">0.0185</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="6"
      id="ixv-94394"
      unitRef="pure">0.0079</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="6"
      id="ixv-94395"
      unitRef="pure">0.0070</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23680">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated and if you hold your shares: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94396"
      unitRef="usd">681</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94397"
      unitRef="usd">681</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94398"
      unitRef="usd">483</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94399"
      unitRef="usd">483</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94400"
      unitRef="usd">288</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94401"
      unitRef="usd">188</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94402"
      unitRef="usd">81</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94403"
      unitRef="usd">81</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94404"
      unitRef="usd">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94405"
      unitRef="usd">72</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94406"
      unitRef="usd">905</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94407"
      unitRef="usd">905</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94408"
      unitRef="usd">763</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94409"
      unitRef="usd">763</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94410"
      unitRef="usd">582</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94411"
      unitRef="usd">582</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94412"
      unitRef="usd">252</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94413"
      unitRef="usd">252</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94414"
      unitRef="usd">224</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94415"
      unitRef="usd">224</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94416"
      unitRef="usd">1146</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94417"
      unitRef="usd">1146</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94418"
      unitRef="usd">1063</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94419"
      unitRef="usd">1063</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94420"
      unitRef="usd">1001</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94421"
      unitRef="usd">1001</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94422"
      unitRef="usd">439</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94423"
      unitRef="usd">439</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94424"
      unitRef="usd">390</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94425"
      unitRef="usd">390</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94426"
      unitRef="usd">1838</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000064789_Cid_C000209808"
      decimals="0"
      id="ixv-94427"
      unitRef="usd">1838</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94428"
      unitRef="usd">1917</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000064789_Cid_C000209810"
      decimals="0"
      id="ixv-94429"
      unitRef="usd">1917</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94430"
      unitRef="usd">1973</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000064789_Cid_C000209809"
      decimals="0"
      id="ixv-94431"
      unitRef="usd">1973</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94432"
      unitRef="usd">978</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000064789_Cid_C000209811"
      decimals="0"
      id="ixv-94433"
      unitRef="usd">978</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94434"
      unitRef="usd">871</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000064789_Cid_C000209807"
      decimals="0"
      id="ixv-94435"
      unitRef="usd">871</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23988">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-23993">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       72 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      decimals="4"
      id="ixv-94436"
      unitRef="pure">0.72</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24002">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24007">
     
       
      
       Normally investing primarily in equity securities. 
      
       
        Normally investing at least 80% of assets in securities of founder-involved companies. 
      
     The Adviser considers a number of factors in determining whether a company is a founder-involved company, including whether a founder or founder family member is a member of the senior management team or the company's board of directors at the time of investment or within the past five years and a founder's personal or family share ownership in the company. Whether a company is a founder-involved company can be determined under any of these factors. 
      
       
        Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      Using quantitative analysis to evaluate growth potential, valuation, liquidity, and investment risk, along with fundamental analysis of factors such as each issuer's financial condition, its industry position, and market and economic conditions to select investments. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Investing in securities of domestic and foreign issuers. 
      
      
       
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-24033">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_ForeignExposureMember"
      id="ixv-24042">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-24051">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
     Founder-involved companies may have capital structures that give founders control over all or a substantial majority of the company's voting stock and, as a result, give such founders the ability to control matters submitted to stockholders for approval, including the election, removal, and replacement of directors and any merger, consolidation, or sale of all or substantially all of the company's assets. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-24062">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_ValueInvestingMember"
      id="ixv-24077">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_QuantitativeInvestingMember"
      id="ixv-24086">
     
       
      
      Quantitative Investing. 
      
     Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_ManagementRiskMember"
      id="ixv-24095">
     
       
      
      Management Risk. 
      
     The Adviser's application of the founder-involved strategy may not achieve its intended results. The fund could underperform in comparison to other funds with a similar benchmark or similar objectives and investment strategies. 
      
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-24105">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-24113">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24120">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24125">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
      
       
     The index description appears in the "Additional Index Information" section of the prospectus. 
       
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     Visit 
       
      
        
      institutional.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24130"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24137"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24143"> 
        
      institutional.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24148">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:BarChartNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24152">
     
       
      
        
      The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown. 
        
      
       
    
   </oef:BarChartNarrativeTextBlock>
    <oef:BarChartDoesNotReflectSalesLoads
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24155"> 
        
      The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown. 
        
     </oef:BarChartDoesNotReflectSalesLoads>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_2020"
      decimals="INF"
      id="ixv-94437"
      unitRef="pure">0.4672</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_2021"
      decimals="INF"
      id="ixv-94438"
      unitRef="pure">0.1863</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_2022"
      decimals="INF"
      id="ixv-94439"
      unitRef="pure">-0.2681</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_2023"
      decimals="INF"
      id="ixv-94440"
      unitRef="pure">0.3353</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_2024"
      decimals="INF"
      id="ixv-94441"
      unitRef="pure">0.3177</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_2025"
      decimals="INF"
      id="ixv-94442"
      unitRef="pure">0.1601</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24254">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      decimals="4"
      id="ixv-94443"
      unitRef="pure">0.3474</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24264">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24269">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      decimals="4"
      id="ixv-94444"
      unitRef="pure">-0.1901</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24280">2022-06-30</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24285">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      decimals="4"
      id="ixv-94445"
      unitRef="pure">-0.0704</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24296">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24301">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24306">
     
       
      
        
      Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. 
        
      
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
      
        
      After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances.  
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).  
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableDoesReflectSalesLoads
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24309"> 
        
      Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. 
        
     </oef:PerformanceTableDoesReflectSalesLoads>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24314"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24319"> 
        
      After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. 
        
     </oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24325"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).  
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="Pid_S000064789_contentCd_FFF-PRO"
      id="ixv-24329"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209808_ReturnBeforeTaxes_01"
      id="ixv-24360">
         Return Before Taxes 
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94446"
      unitRef="pure">0.0934</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94447"
      unitRef="pure">0.1081</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteFFF-PROS000064789AAR_A_RBT_loc"
      unitRef="pure">0.1637</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributions_01"
      id="ixv-24378">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94449"
      unitRef="pure">0.0864</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94450"
      unitRef="pure">0.1003</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributions_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteFFF-PROS000064789AAR_A_ATD_loc"
      unitRef="pure">0.1578</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-24394">
          Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94452"
      unitRef="pure">0.0592</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94453"
      unitRef="pure">0.0839</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209808_AfterTaxesOnDistributionsAndSales_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteFFF-PROS000064789AAR_A_ATDS_loc"
      unitRef="pure">0.1340</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209810_ReturnBeforeTaxes_01"
      id="ixv-24410">
         Return Before Taxes 
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209810_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94455"
      unitRef="pure">0.1169</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209810_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94456"
      unitRef="pure">0.1106</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209810_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteFFF-PROS000064789AAR_B_RBT_loc"
      unitRef="pure">0.1649</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209809_ReturnBeforeTaxes_01"
      id="ixv-24426">
         Return Before Taxes 
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209809_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94458"
      unitRef="pure">0.1418</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209809_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94459"
      unitRef="pure">0.1128</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209809_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteFFF-PROS000064789AAR_C_RBT_loc"
      unitRef="pure">0.1650</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209811_ReturnBeforeTaxes_01"
      id="ixv-24442">
         Return Before Taxes 
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209811_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94461"
      unitRef="pure">0.1642</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209811_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94462"
      unitRef="pure">0.1247</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209811_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteFFF-PROS000064789AAR_D_RBT_loc"
      unitRef="pure">0.1772</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Cid_C000209807_ReturnBeforeTaxes_01"
      id="ixv-24458">
         Return Before Taxes 
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209807_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94464"
      unitRef="pure">0.1656</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209807_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94465"
      unitRef="pure">0.1258</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Cid_C000209807_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteFFF-PROS000064789AAR_E_RBT_loc"
      unitRef="pure">0.1785</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_FFF-PRO_01"
      id="ixv-24473">
         Russell 3000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_FFF-PRO_01"
      decimals="4"
      id="ixv-94467"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_FFF-PRO_05"
      decimals="4"
      id="ixv-94468"
      unitRef="pure">0.1315</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000064789_Indexid_RS003_contentCd_FFF-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94469"
      unitRef="pure">0.1524</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000064789_Cid_C000209808" id="ixv-24514">2019-02-14</oef:AnnualReturnInceptionDate>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000064789_Cid_C000209810" id="ixv-24527">2019-02-14</oef:AnnualReturnInceptionDate>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000064789_Cid_C000209809" id="ixv-24540">2019-02-14</oef:AnnualReturnInceptionDate>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000064789_Cid_C000209811" id="ixv-24553">2019-02-14</oef:AnnualReturnInceptionDate>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000064789_Cid_C000209807" id="ixv-24566">2019-02-14</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31266">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Series Small Cap Core Fund 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31275">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31280">
     
       
     Fidelity&#xae; Series Small Cap Core Fund seeks capital appreciation. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31285">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31291">
     
       
     The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. 
    
   </oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31301">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      decimals="0"
      id="ixv-94470"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31316">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="6"
      id="ixv-94471"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="6"
      id="ixv-94472"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="6"
      id="ixv-94473"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="6"
      id="ixv-94474"
      unitRef="pure">0.0000</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31363">
     
       
     This  
     example 
       
     helps compare the cost of investing in the fund with the cost of investing in other funds. 
       
     Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 
    
   </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="0"
      id="ixv-94475"
      unitRef="usd">0</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="0"
      id="ixv-94476"
      unitRef="usd">0</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="0"
      id="ixv-94477"
      unitRef="usd">0</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000077859_Cid_C000238446"
      decimals="0"
      id="ixv-94478"
      unitRef="usd">0</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31420">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31425">
     
       
     The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 
       
     
       
       62 
       
       
     % of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      decimals="4"
      id="ixv-94479"
      unitRef="pure">0.62</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31434">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31439">
     
       
      
       
        Normally investing primarily in equity securities. 
      Normally investing at least 80% of assets in securities of companies with small market capitalizations. 
      The Adviser generally defines small market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2000 &#xae; Index or the S&amp;P SmallCap 600 &#xae; Index. 
      
      
       Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. 
      
      Investing in domestic and foreign issuers. 
      Investing in either "growth" stocks or "value" stocks or both. 
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-31471">
     
       
      
      Stock Market Volatility. 
      
     Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_ForeignExposureMember"
      id="ixv-31480">
     
       
      
      Foreign Exposure. 
      
     Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-31489">
     
       
      
      Issuer-Specific Changes. 
      
     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-31498">
     
       
      
      "Growth" Investing. 
      
     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. &#160; &#160; &#160; 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_ValueInvestingMember"
      id="ixv-31513">
     
       
      
      "Value" Investing. 
      
     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_SmallCapInvestingMember"
      id="ixv-31522">
     
       
      
      Small Cap Investing. 
      
     The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-31531">
     
       
     An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency 
       
     . 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-31539">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31546">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31551">
     
       
     The following information is intended to help you understand the risks of investing in the fund. 
      
        
      The information illustrates the changes in the performance of the fund's shares from year to 
        
      year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
      
       
     The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear 
       
     in the "Additional Index Information" section of the prospectus.  
      
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
      
     The performance shown does not reflect the impact of any fees paid at the fee-based account or plan level, if applicable. 
     Visit 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31556"> 
        
      The information illustrates the changes in the performance of the fund's shares from year to 
        
      year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. 
        
     </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31566"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31574"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31579">
     
       
     Year-by-Year Returns 
       
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_2023"
      decimals="INF"
      id="ixv-94480"
      unitRef="pure">0.1680</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_2024"
      decimals="INF"
      id="ixv-94481"
      unitRef="pure">0.1016</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_2025"
      decimals="INF"
      id="ixv-94482"
      unitRef="pure">0.1161</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31668">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      decimals="4"
      id="ixv-94483"
      unitRef="pure">0.1566</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31678">2023-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31683">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      decimals="4"
      id="ixv-94484"
      unitRef="pure">-0.1130</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31694">2025-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31699">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      decimals="4"
      id="ixv-94485"
      unitRef="pure">0.0266</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31709">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31714">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31719">
     
       
      
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
      
       
     Actual after-tax returns may differ depending on your individual circumstances. 
       
      
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
      
       
      
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
      
       
    
   </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31722"> 
        
      After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 
        
     </oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31729"> 
        
      The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). 
        
     </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="Pid_S000077859_contentCd_SCC-PRO"
      id="ixv-31734"> 
        
      Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. 
        
     </oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000077859_Cid_C000238446_ReturnBeforeTaxes_01"
      id="ixv-31772">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94486"
      unitRef="pure">0.1161</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteSCC-PROS000077859AAR_A_RBT_loc"
      unitRef="pure">0.1150</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000077859_Cid_C000238446_AfterTaxesOnDistributions_01"
      id="ixv-31785">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94488"
      unitRef="pure">0.1136</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_AfterTaxesOnDistributions_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteSCC-PROS000077859AAR_A_ATD_loc"
      unitRef="pure">0.1104</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000077859_Cid_C000238446_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-31798">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94490"
      unitRef="pure">0.0699</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Cid_C000238446_AfterTaxesOnDistributionsAndSales_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteSCC-PROS000077859AAR_A_ATDS_loc"
      unitRef="pure">0.0884</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000077859_Indexid_RS002_contentCd_SCC-PRO_01"
      id="ixv-31812">
         Russell 2000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Indexid_RS002_contentCd_SCC-PRO_01"
      decimals="4"
      id="ixv-94492"
      unitRef="pure">0.1281</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Indexid_RS002_contentCd_SCC-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94493"
      unitRef="pure">0.1234</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000077859_Indexid_RS003_contentCd_SCC-PRO_01"
      id="ixv-31831">
         Russell 3000&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Indexid_RS003_contentCd_SCC-PRO_01"
      decimals="4"
      id="ixv-94494"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000077859_Indexid_RS003_contentCd_SCC-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94495"
      unitRef="pure">0.2170</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000077859_Cid_C000238446" id="ixv-31863">2022-11-04</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33377">Fund Summary
Fund/Class:
Fidelity&#xae; Large Cap Stock Fund/Fidelity Advisor&#xae; Large Cap Stock Fund A, M, C, I, Z&#160;
</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33390">Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33394">Fidelity&#xae; Large Cap Stock Fund seeks long-term growth of capital.</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33397">Fee Table</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33399">
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity&#xae; funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution" section beginning on page 40 of the prospectus and in the sales charge waiver appendix to the prospectus.
</oef:ExpenseNarrativeTextBlock>
    <oef:ExpenseBreakpointDiscounts
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33404">You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity&#xae; funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution" section beginning on page 40 of the prospectus</oef:ExpenseBreakpointDiscounts>
    <oef:ExpenseBreakpointMinimumInvestmentRequiredAmount
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      decimals="0"
      id="ixv-94496"
      unitRef="usd">50000</oef:ExpenseBreakpointMinimumInvestmentRequiredAmount>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33415">Shareholder fees</oef:ShareholderFeesCaption>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="4"
      id="ixv-94497"
      unitRef="pure">0.0575</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="4"
      id="ixv-94498"
      unitRef="pure">0.0350</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="4"
      id="ixv-94499"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="4"
      id="ixv-94500"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="4"
      id="ixv-94501"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="4"
      id="footnoteAMCS-PROS000055364SHF_AC000259433"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="4"
      id="footnoteAMCS-PROS000055364SHF_AC000259430"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="4"
      id="footnoteAMCS-PROS000055364SHF_BC000259429"
      unitRef="pure">0.0100</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="4"
      id="ixv-94505"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="4"
      id="ixv-94506"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:ExpensesDeferredChargesTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33518">Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.</oef:ExpensesDeferredChargesTextBlock>
    <oef:ExpensesDeferredChargesTextBlock contextRef="Pid_S000055364_Cid_C000259429" id="ixv-33526">On Class C shares redeemed less than one year after purchase.</oef:ExpensesDeferredChargesTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33531">Annual Operating Expenses</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="6"
      id="footnoteS000055364AMCS-PROAOE_AC000259433_MF"
      unitRef="pure">0.0074</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="6"
      id="footnoteS000055364AMCS-PROAOE_AC000259430_MF"
      unitRef="pure">0.0074</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="6"
      id="footnoteS000055364AMCS-PROAOE_AC000259429_MF"
      unitRef="pure">0.0074</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="6"
      id="footnoteS000055364AMCS-PROAOE_AC000259431_MF"
      unitRef="pure">0.0074</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="6"
      id="footnoteS000055364AMCS-PROAOE_AC000259432_MF"
      unitRef="pure">0.0063</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="6"
      id="ixv-94512"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="6"
      id="ixv-94513"
      unitRef="pure">0.0050</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="6"
      id="ixv-94514"
      unitRef="pure">0.0100</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="6"
      id="ixv-94515"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="6"
      id="ixv-94516"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="6"
      id="ixv-94517"
      unitRef="pure">0.0002</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="6"
      id="ixv-94518"
      unitRef="pure">0.0002</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="6"
      id="ixv-94519"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="6"
      id="ixv-94520"
      unitRef="pure">0.0002</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="6"
      id="ixv-94521"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="6"
      id="ixv-94522"
      unitRef="pure">0.0101</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="6"
      id="ixv-94523"
      unitRef="pure">0.0126</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="6"
      id="ixv-94524"
      unitRef="pure">0.0175</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="6"
      id="ixv-94525"
      unitRef="pure">0.0076</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="6"
      id="ixv-94526"
      unitRef="pure">0.0064</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-33702">This example helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated and if you hold your shares:</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94527"
      unitRef="usd">672</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94528"
      unitRef="usd">672</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94529"
      unitRef="usd">474</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94530"
      unitRef="usd">474</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94531"
      unitRef="usd">278</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94532"
      unitRef="usd">178</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94533"
      unitRef="usd">78</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94534"
      unitRef="usd">78</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94535"
      unitRef="usd">65</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94536"
      unitRef="usd">65</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94537"
      unitRef="usd">878</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94538"
      unitRef="usd">878</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94539"
      unitRef="usd">736</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94540"
      unitRef="usd">736</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94541"
      unitRef="usd">551</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94542"
      unitRef="usd">551</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94543"
      unitRef="usd">243</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94544"
      unitRef="usd">243</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94545"
      unitRef="usd">205</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94546"
      unitRef="usd">205</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94547"
      unitRef="usd">1101</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94548"
      unitRef="usd">1101</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94549"
      unitRef="usd">1017</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94550"
      unitRef="usd">1017</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94551"
      unitRef="usd">949</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94552"
      unitRef="usd">949</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94553"
      unitRef="usd">422</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94554"
      unitRef="usd">422</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94555"
      unitRef="usd">357</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94556"
      unitRef="usd">357</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94557"
      unitRef="usd">1740</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055364_Cid_C000259433"
      decimals="0"
      id="ixv-94558"
      unitRef="usd">1740</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94559"
      unitRef="usd">1819</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055364_Cid_C000259430"
      decimals="0"
      id="ixv-94560"
      unitRef="usd">1819</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94561"
      unitRef="usd">1867</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055364_Cid_C000259429"
      decimals="0"
      id="ixv-94562"
      unitRef="usd">1867</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94563"
      unitRef="usd">942</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055364_Cid_C000259431"
      decimals="0"
      id="ixv-94564"
      unitRef="usd">942</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94565"
      unitRef="usd">798</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055364_Cid_C000259432"
      decimals="0"
      id="ixv-94566"
      unitRef="usd">798</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34011">Portfolio Turnover</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34015">The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 25% of the average value of its portfolio.</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94567"
      unitRef="pure">0.25</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34019">Principal Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34022">
Normally investing at least 80% of assets in common stocks of companies with large market capitalizations.
The Adviser generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 1000&#xae; Index or the S&amp;P 500&#xae; Index.
Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer.
Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives.
Investing in domestic and foreign issuers.Investing in either "growth" stocks or "value" stocks or both.Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.
</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-34047">Stock Market Volatility.
Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO_RiskMember_ForeignExposureMember"
      id="ixv-34053">Foreign Exposure.
Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-34059">Issuer-Specific Changes.
The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-34065">"Growth" Investing.
 "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.&#160; &#160; &#160;
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO_RiskMember_ValueInvestingMember"
      id="ixv-34072">"Value" Investing.
"Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-34079">An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-34082">&#160;You could lose money by investing in the fund.</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34086">Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34089">
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of Fidelity&#xae; Large Cap Stock Fund, a class of shares of the fund, from year to year and compares the performance of this class to the performance of a securities market index over various periods of time. The index description appears in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.
Visit www.fidelity.com for more recent performance information for Fidelity&#xae; Large Cap Stock Fund, a class of shares of the fund.
Performance history will be available at institutional.fidelity.com for Class A, Class M, Class C, Class I, and Class Z after Class A, Class M, Class C, Class I, and Class Z have been in operation for one calendar year.</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34093">The information illustrates the changes in the performance of Fidelity&#xae; Large Cap Stock Fund, a class of shares of the fund, from year to year and compares the performance of this class to the performance of a securities market index over various periods of time.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34096">Past performance (before and after taxes) is not an indication of future performance</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34101"> www.fidelity.com </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceOneYearOrLess
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34105">Performance history will be available at institutional.fidelity.com for Class A, Class M, Class C, Class I, and Class Z after Class A, Class M, Class C, Class I, and Class Z have been in operation for one calendar year.</oef:PerformanceOneYearOrLess>
    <oef:BarChartHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34111">Year-by-Year Returns</oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2016"
      decimals="INF"
      id="ixv-94568"
      unitRef="pure">0.1670</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2017"
      decimals="INF"
      id="ixv-94569"
      unitRef="pure">0.1815</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2018"
      decimals="INF"
      id="ixv-94570"
      unitRef="pure">-0.0915</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2019"
      decimals="INF"
      id="ixv-94571"
      unitRef="pure">0.3155</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2020"
      decimals="INF"
      id="ixv-94572"
      unitRef="pure">0.0900</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2021"
      decimals="INF"
      id="ixv-94573"
      unitRef="pure">0.2583</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2022"
      decimals="INF"
      id="ixv-94574"
      unitRef="pure">-0.0795</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2023"
      decimals="INF"
      id="ixv-94575"
      unitRef="pure">0.2352</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2024"
      decimals="INF"
      id="ixv-94576"
      unitRef="pure">0.2628</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_2025"
      decimals="INF"
      id="ixv-94577"
      unitRef="pure">0.2757</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34218"> &#160;&#160;&#160;Highest Quarter Return</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94578"
      unitRef="pure">0.1907</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34228">2020-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34233"> &#160;&#160;&#160;Lowest Quarter Return</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94579"
      unitRef="pure">-0.2495</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34244">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34249"> &#160;&#160;&#160;Year-to-Date Return</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94580"
      unitRef="pure">-0.0190</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34260">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:BarChartReturnsForClassNotOfferedInProspectus
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34264">* The returns shown above are for Fidelity&#xae; Large Cap Stock Fund, a class of shares of the fund that is not offered through this prospectus. Class A, Class M, Class C, Class I, and Class Z would have substantially similar annual returns to Fidelity&#xae; Large Cap Stock Fund because the classes are invested in the same portfolio of securities. Class A's, Class M's, Class C's, Class I's, and Class Z's returns would differ from Fidelity&#xae; Large Cap Stock Fund's returns only to the extent that the classes do not have the same expenses.</oef:BarChartReturnsForClassNotOfferedInProspectus>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34268">Average Annual Returns</oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34273">After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.</oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34274">After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34277"> The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34279"> Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_01"
      id="ixv-34323">Return Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94581"
      unitRef="pure">0.2757</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_05"
      decimals="4"
      id="ixv-94582"
      unitRef="pure">0.1818</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_ReturnBeforeTaxes_10"
      decimals="4"
      id="ixv-94583"
      unitRef="pure">0.1527</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_01"
      id="ixv-34337">Return After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94584"
      unitRef="pure">0.2552</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_05"
      decimals="4"
      id="ixv-94585"
      unitRef="pure">0.1694</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributions_10"
      decimals="4"
      id="ixv-94586"
      unitRef="pure">0.1388</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-34351">Return After Taxes on Distributions and Sale of Fund Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94587"
      unitRef="pure">0.1755</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_05"
      decimals="4"
      id="ixv-94588"
      unitRef="pure">0.1445</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Cid_C000174182_AfterTaxesOnDistributionsAndSales_10"
      decimals="4"
      id="ixv-94589"
      unitRef="pure">0.1234</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_AMCS-PRO_01"
      id="ixv-34366">S&amp;P 500&#xae; Index</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_AMCS-PRO_01"
      decimals="4"
      id="ixv-94590"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_AMCS-PRO_05"
      decimals="4"
      id="ixv-94591"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055364_Indexid_SP001_contentCd_AMCS-PRO_10"
      decimals="4"
      id="ixv-94592"
      unitRef="pure">0.1482</oef:AvgAnnlRtrPct>
    <oef:BarChartReturnsForClassNotOfferedInProspectus
      contextRef="Pid_S000055364_contentCd_AMCS-PRO"
      id="ixv-34401">* The returns shown above are for Fidelity&#xae; Large Cap Stock Fund, a class of shares of the fund that is not offered through this prospectus. Class A, Class M, Class C, Class I, and Class Z would have substantially similar annual returns to Fidelity&#xae; Large Cap Stock Fund because the classes are invested in the same portfolio of securities. Class A's, Class M's, Class C's, Class I's, and Class Z's returns would differ from Fidelity&#xae; Large Cap Stock Fund's returns only to the extent that the classes do not have the same expenses.</oef:BarChartReturnsForClassNotOfferedInProspectus>
    <oef:RiskReturnHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34485">Fund Summary
Fund/Class:
Fidelity&#xae; Mid-Cap Stock Fund/Fidelity Advisor&#xae; Mid-Cap Stock Fund A, M, C, I, Z&#160;
</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34498">Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34502">Fidelity&#xae; Mid-Cap Stock Fund seeks long-term growth of capital.</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34505">Fee Table</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34507">
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity&#xae; funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution" section beginning on page 40 of the prospectus and in the sales charge waiver appendix to the prospectus.
</oef:ExpenseNarrativeTextBlock>
    <oef:ExpenseBreakpointDiscounts
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34512">You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity&#xae; funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution" section beginning on page 40 of the prospectus</oef:ExpenseBreakpointDiscounts>
    <oef:ExpenseBreakpointMinimumInvestmentRequiredAmount
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      decimals="0"
      id="ixv-94593"
      unitRef="usd">50000</oef:ExpenseBreakpointMinimumInvestmentRequiredAmount>
    <oef:ShareholderFeesCaption
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34523">Shareholder fees</oef:ShareholderFeesCaption>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="4"
      id="ixv-94594"
      unitRef="pure">0.0575</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="4"
      id="ixv-94595"
      unitRef="pure">0.0350</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="4"
      id="ixv-94596"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="4"
      id="ixv-94597"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="4"
      id="ixv-94598"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="4"
      id="footnoteAMCS-PROS000055365SHF_AC000254536"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="4"
      id="footnoteAMCS-PROS000055365SHF_AC000254537"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="4"
      id="footnoteAMCS-PROS000055365SHF_BC000254534"
      unitRef="pure">0.0100</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="4"
      id="ixv-94602"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="4"
      id="ixv-94603"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:ExpensesDeferredChargesTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34626">Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.</oef:ExpensesDeferredChargesTextBlock>
    <oef:ExpensesDeferredChargesTextBlock contextRef="Pid_S000055365_Cid_C000254534" id="ixv-34634">On Class C shares redeemed less than one year after purchase.</oef:ExpensesDeferredChargesTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34639">Annual Operating Expenses</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="6"
      id="footnoteS000055365AMCS-PROAOE_AC000254536_MF"
      unitRef="pure">0.0069</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="6"
      id="footnoteS000055365AMCS-PROAOE_AC000254537_MF"
      unitRef="pure">0.0068</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="6"
      id="footnoteS000055365AMCS-PROAOE_AC000254534_MF"
      unitRef="pure">0.0068</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="6"
      id="footnoteS000055365AMCS-PROAOE_AC000254538_MF"
      unitRef="pure">0.0068</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="6"
      id="footnoteS000055365AMCS-PROAOE_AC000254535_MF"
      unitRef="pure">0.0057</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="6"
      id="ixv-94609"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="6"
      id="ixv-94610"
      unitRef="pure">0.0050</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="6"
      id="ixv-94611"
      unitRef="pure">0.0100</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="6"
      id="ixv-94612"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="6"
      id="ixv-94613"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="6"
      id="ixv-94614"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="6"
      id="ixv-94615"
      unitRef="pure">0.0000</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="6"
      id="ixv-94616"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="6"
      id="ixv-94617"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="6"
      id="ixv-94618"
      unitRef="pure">0.0001</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="6"
      id="ixv-94619"
      unitRef="pure">0.0094</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="6"
      id="ixv-94620"
      unitRef="pure">0.0118</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="6"
      id="ixv-94621"
      unitRef="pure">0.0169</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="6"
      id="ixv-94622"
      unitRef="pure">0.0069</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="6"
      id="ixv-94623"
      unitRef="pure">0.0058</oef:ExpensesOverAssets>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-34810">This example helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated and if you hold your shares:</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94624"
      unitRef="usd">665</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94625"
      unitRef="usd">665</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94626"
      unitRef="usd">466</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94627"
      unitRef="usd">466</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94628"
      unitRef="usd">272</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94629"
      unitRef="usd">172</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94630"
      unitRef="usd">70</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94631"
      unitRef="usd">70</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear01
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94632"
      unitRef="usd">59</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94633"
      unitRef="usd">59</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94634"
      unitRef="usd">857</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94635"
      unitRef="usd">857</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94636"
      unitRef="usd">712</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94637"
      unitRef="usd">712</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94638"
      unitRef="usd">533</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94639"
      unitRef="usd">533</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94640"
      unitRef="usd">221</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94641"
      unitRef="usd">221</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94642"
      unitRef="usd">186</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94643"
      unitRef="usd">186</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94644"
      unitRef="usd">1065</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94645"
      unitRef="usd">1065</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94646"
      unitRef="usd">976</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94647"
      unitRef="usd">976</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94648"
      unitRef="usd">918</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94649"
      unitRef="usd">918</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94650"
      unitRef="usd">384</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94651"
      unitRef="usd">384</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94652"
      unitRef="usd">324</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94653"
      unitRef="usd">324</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94654"
      unitRef="usd">1663</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055365_Cid_C000254536"
      decimals="0"
      id="ixv-94655"
      unitRef="usd">1663</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94656"
      unitRef="usd">1732</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055365_Cid_C000254537"
      decimals="0"
      id="ixv-94657"
      unitRef="usd">1732</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94658"
      unitRef="usd">1799</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055365_Cid_C000254534"
      decimals="0"
      id="ixv-94659"
      unitRef="usd">1799</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94660"
      unitRef="usd">859</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055365_Cid_C000254538"
      decimals="0"
      id="ixv-94661"
      unitRef="usd">859</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94662"
      unitRef="usd">726</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Pid_S000055365_Cid_C000254535"
      decimals="0"
      id="ixv-94663"
      unitRef="usd">726</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35119">Portfolio Turnover</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35123">The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 35% of the average value of its portfolio.</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94664"
      unitRef="pure">0.35</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35127">Principal Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35130">
Normally investing at least 80% of assets in common stocks of companies with medium market capitalizations.
The Adviser generally defines medium market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell Midcap&#xae; Index or the S&amp;P MidCap 400&#xae; Index.
Common stocks (including depositary receipts evidencing ownership of common stock) are a type of equity security that represents an ownership interest in an issuer.
Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives.
Potentially investing in companies with smaller or larger market capitalizations.Investing in domestic and foreign issuers.Investing in either "growth" stocks or "value" stocks or both.Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.
</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-35157">Stock Market Volatility.
Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_ForeignExposureMember"
      id="ixv-35163">Foreign Exposure.
Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-35169">Issuer-Specific Changes.
The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
The value of securities of smaller issuers can be more volatile than that of larger issuers.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_GrowthInvestingMember"
      id="ixv-35177">"Growth" Investing.
 "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.&#160; &#160; &#160;
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_ValueInvestingMember"
      id="ixv-35184">"Value" Investing.
"Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_MidCapInvestingMember"
      id="ixv-35190">Mid Cap Investing.
The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-35197">An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-35200">&#160;You could lose money by investing in the fund.</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35204">Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35207">
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the performance of the fund's shares over the past year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.
Visit institutional.fidelity.com for more recent performance information.
</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35211">The information illustrates the performance of the fund's shares over the past year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. </oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35214">Past performance (before and after taxes) is not an indication of future performance.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35218"> institutional.fidelity.com </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35225">Year-by-Year Returns </oef:BarChartHeading>
    <oef:BarChartNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35229">The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.</oef:BarChartNarrativeTextBlock>
    <oef:BarChartDoesNotReflectSalesLoads
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35230">The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.</oef:BarChartDoesNotReflectSalesLoads>
    <oef:AnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254536_2025"
      decimals="INF"
      id="ixv-94665"
      unitRef="pure">0.1150</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35307"> &#160;&#160;&#160;Highest Quarter Return</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94666"
      unitRef="pure">0.0911</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35317">2025-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35322"> &#160;&#160;&#160;Lowest Quarter Return</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94667"
      unitRef="pure">-0.0585</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35333">2025-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35338"> &#160;&#160;&#160;Year-to-Date Return</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      decimals="4"
      id="ixv-94668"
      unitRef="pure">0.0457</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35348">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35352">Average Annual Returns</oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35356">Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.</oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableDoesReflectSalesLoads
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35357">Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.</oef:PerformanceTableDoesReflectSalesLoads>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35359"> After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35361"> After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35364">The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="Pid_S000055365_contentCd_AMCS-PRO"
      id="ixv-35366">Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000254536_ReturnBeforeTaxes_01"
      id="ixv-35390">Return Before Taxes </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254536_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94669"
      unitRef="pure">0.0509</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254536_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteAMCS-PROS000055365AAR_A_RBT_loc"
      unitRef="pure">0.0486</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000254536_AfterTaxesOnDistributions_01"
      id="ixv-35405">Return After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254536_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-94671"
      unitRef="pure">0.0459</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254536_AfterTaxesOnDistributions_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteAMCS-PROS000055365AAR_A_ATD_loc"
      unitRef="pure">0.0368</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000254536_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-35418"> Return After Taxes on Distributions and Sale of Fund Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254536_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-94673"
      unitRef="pure">0.0332</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254536_AfterTaxesOnDistributionsAndSales_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteAMCS-PROS000055365AAR_A_ATDS_loc"
      unitRef="pure">0.0360</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000254537_ReturnBeforeTaxes_01"
      id="ixv-35431">Return Before Taxes </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254537_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94675"
      unitRef="pure">0.0733</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254537_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteAMCS-PROS000055365AAR_B_RBT_loc"
      unitRef="pure">0.0662</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000254534_ReturnBeforeTaxes_01"
      id="ixv-35444">Return Before Taxes </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254534_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94677"
      unitRef="pure">0.0967</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254534_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteAMCS-PROS000055365AAR_C_RBT_loc"
      unitRef="pure">0.0921</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000254538_ReturnBeforeTaxes_01"
      id="ixv-35457">Return Before Taxes </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254538_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94679"
      unitRef="pure">0.1177</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254538_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteAMCS-PROS000055365AAR_D_RBT_loc"
      unitRef="pure">0.1030</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Cid_C000254535_ReturnBeforeTaxes_01"
      id="ixv-35470">Return Before Taxes </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254535_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-94681"
      unitRef="pure">0.1189</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Cid_C000254535_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteAMCS-PROS000055365AAR_E_RBT_loc"
      unitRef="pure">0.1042</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_AMCS-PRO_01"
      id="ixv-35482">S&amp;P MidCap 400&#xae; Index</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_AMCS-PRO_01"
      decimals="4"
      id="ixv-94683"
      unitRef="pure">0.0750</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP004_contentCd_AMCS-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-94684"
      unitRef="pure">0.0704</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_AMCS-PRO_01"
      id="ixv-35501">S&amp;P 500&#xae; Index</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000055365_Indexid_SP001_contentCd_AMCS-PRO_01"
      decimals="4"
      id="ixv-94685"
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        <link:footnote id="footnoteS000055364SML-PROAOE_A" xlink:label="footnoteS000055364SML-PROAOE_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.67pt; vertical-align:super">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">The management fee comprises</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">a basic fee, which may vary by class, that is</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">adjusted up or down by</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">a maximum of 0.20%</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">based on the performance of the fund or a designated class of the fund relative to that of the S&amp;P 500&#xae; Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteS000055370SMR-PROAOE_A" xlink:label="footnoteS000055370SMR-PROAOE_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.67pt; vertical-align:super">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">a maximum of 0.20%</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">based on the performance of the fund or a designated class of the fund relative to that of the Russell 2000&#xae; Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteS000055365MCS-K-PROAOE_A" xlink:label="footnoteS000055365MCS-K-PROAOE_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.67pt; vertical-align:super">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">The management fee comprises</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">a basic fee, which may vary by class, that is</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">adjusted up or down by</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">a maximum of 0.20%</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">based on the performance of the fund or a designated class of the fund relative to that of the S&amp;P MidCap 400&#xae; Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteS000064789RFFF-PROAOE_A" xlink:label="footnoteS000064789RFFF-PROAOE_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.10% based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000&#xae; Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteRFFF-PROS000064789AAR_A" xlink:label="footnoteRFFF-PROS000064789AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">February 14, 2019</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteFFF-PROS000064789SHF_A" xlink:label="footnoteFFF-PROS000064789SHF_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.67pt; vertical-align:super">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteS000064789FFF-PROAOE_A" xlink:label="footnoteS000064789FFF-PROAOE_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.10% based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000&#xae; Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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          xlink:href="#footnoteFFF-PROS000064789AAR_A_RBT_loc"
          xlink:label="footnoteFFF-PROS000064789AAR_A_RBT_loc"
          xlink:type="locator"/>
        <link:footnote id="footnoteFFF-PROS000064789AAR_A" xlink:label="footnoteFFF-PROS000064789AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">February 14, 2019</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteFFF-PROS000064789AAR_A_RBT_loc"
          xlink:to="footnoteFFF-PROS000064789AAR_A"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteFFF-PROS000064789AAR_A_ATD_loc"
          xlink:label="footnoteFFF-PROS000064789AAR_A_ATD_loc"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteFFF-PROS000064789AAR_A_ATD_loc"
          xlink:to="footnoteFFF-PROS000064789AAR_A"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteFFF-PROS000064789AAR_A_ATDS_loc"
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          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteFFF-PROS000064789AAR_A_ATDS_loc"
          xlink:to="footnoteFFF-PROS000064789AAR_A"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteFFF-PROS000064789AAR_B_RBT_loc"
          xlink:label="footnoteFFF-PROS000064789AAR_B_RBT_loc"
          xlink:type="locator"/>
        <link:footnote id="footnoteFFF-PROS000064789AAR_B" xlink:label="footnoteFFF-PROS000064789AAR_B" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">B</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">February 14, 2019</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteFFF-PROS000064789AAR_B_RBT_loc"
          xlink:to="footnoteFFF-PROS000064789AAR_B"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteFFF-PROS000064789AAR_C_RBT_loc"
          xlink:label="footnoteFFF-PROS000064789AAR_C_RBT_loc"
          xlink:type="locator"/>
        <link:footnote id="footnoteFFF-PROS000064789AAR_C" xlink:label="footnoteFFF-PROS000064789AAR_C" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">C</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">February 14, 2019</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteFFF-PROS000064789AAR_C_RBT_loc"
          xlink:to="footnoteFFF-PROS000064789AAR_C"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteFFF-PROS000064789AAR_D_RBT_loc"
          xlink:label="footnoteFFF-PROS000064789AAR_D_RBT_loc"
          xlink:type="locator"/>
        <link:footnote id="footnoteFFF-PROS000064789AAR_D" xlink:label="footnoteFFF-PROS000064789AAR_D" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">D</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">February 14, 2019</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteFFF-PROS000064789AAR_D_RBT_loc"
          xlink:to="footnoteFFF-PROS000064789AAR_D"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteFFF-PROS000064789AAR_E_RBT_loc"
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          xlink:type="locator"/>
        <link:footnote id="footnoteFFF-PROS000064789AAR_E" xlink:label="footnoteFFF-PROS000064789AAR_E" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.5pt; vertical-align:3pt">E</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">February 14, 2019</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteFFF-PROS000064789AAR_E_RBT_loc"
          xlink:to="footnoteFFF-PROS000064789AAR_E"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteSCC-PROS000077859AAR_A_RBT_loc"
          xlink:label="footnoteSCC-PROS000077859AAR_A_RBT_loc"
          xlink:type="locator"/>
        <link:footnote id="footnoteSCC-PROS000077859AAR_A" xlink:label="footnoteSCC-PROS000077859AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:div style="padding:2px"><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:4.67pt; vertical-align:super">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">November 4, 2022</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteSCC-PROS000077859AAR_A_RBT_loc"
          xlink:to="footnoteSCC-PROS000077859AAR_A"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteSCC-PROS000077859AAR_A_ATD_loc"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteSCC-PROS000077859AAR_A_ATDS_loc"
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        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteSCC-PROS000077859AAR_A_ATDS_loc"
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        <link:loc
          xlink:href="#footnoteAMCS-PROS000055364SHF_AC000259433"
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        <link:footnote id="footnoteAMCS-PROS000055364SHF_A" xlink:label="footnoteAMCS-PROS000055364SHF_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;">A</xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;"><xhtml:span style="padding-right:10px"/></xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;">Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.</xhtml:span></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteAMCS-PROS000055364SHF_AC000259433"
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          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteAMCS-PROS000055364SHF_AC000259430"
          xlink:label="footnoteAMCS-PROS000055364SHF_AC000259430"
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        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteAMCS-PROS000055364SHF_AC000259430"
          xlink:to="footnoteAMCS-PROS000055364SHF_A"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteAMCS-PROS000055364SHF_BC000259429"
          xlink:label="footnoteAMCS-PROS000055364SHF_BC000259429"
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        <link:footnote id="footnoteAMCS-PROS000055364SHF_B" xlink:label="footnoteAMCS-PROS000055364SHF_B" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;">B</xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;"><xhtml:span style="padding-right:10px"/></xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;">On Class C shares redeemed less than one year after purchase.</xhtml:span></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteAMCS-PROS000055364SHF_BC000259429"
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        <link:loc
          xlink:href="#footnoteS000055364AMCS-PROAOE_AC000259433_MF"
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        <link:footnote id="footnoteS000055364AMCS-PROAOE_A" xlink:label="footnoteS000055364AMCS-PROAOE_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;">A</xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;"><xhtml:span style="padding-right:10px"/></xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.20% based on the performance of the fund or a designated class of the fund relative to that of the S&amp;P 500&#xae; Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information. The performance adjustment component of the management fee represents activity for the period from November 13, 2025 (commencement of class operations) until April 30, 2026. Had the class been in existence for the entire fiscal year ended April 30, 2026, the management fee would have been 0.76%, 0.76%, 0.76%, 0.76%, and 0.64% for Class A, Class M, Class C, Class I, and Class Z, respectively.</xhtml:span></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
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        <link:loc
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        <link:footnote id="footnoteAMCS-PROS000055365SHF_A" xlink:label="footnoteAMCS-PROS000055365SHF_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;">A</xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;"><xhtml:span style="padding-right:10px"/></xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;">Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.</xhtml:span></link:footnote>
        <link:footnoteArc
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        <link:loc
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          xlink:href="#footnoteAMCS-PROS000055365SHF_BC000254534"
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        <link:footnote id="footnoteAMCS-PROS000055365SHF_B" xlink:label="footnoteAMCS-PROS000055365SHF_B" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;">B</xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;"><xhtml:span style="padding-right:10px"/></xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;">On Class C shares redeemed less than one year after purchase.</xhtml:span></link:footnote>
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        <link:loc
          xlink:href="#footnoteS000055365AMCS-PROAOE_AC000254536_MF"
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        <link:footnote id="footnoteS000055365AMCS-PROAOE_A" xlink:label="footnoteS000055365AMCS-PROAOE_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:4px;font-weight:normal;">A</xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;"><xhtml:span style="padding-right:10px"/></xhtml:span><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.20% based on the performance of the fund or a designated class of the fund relative to that of the S&amp;P MidCap 400&#xae; Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.</xhtml:span></link:footnote>
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