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    <unit id="usd">
        <measure>iso4217:USD</measure>
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    <unit id="pure">
        <measure>pure</measure>
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    <dei:AmendmentFlag contextRef="Trust" id="ixv-16660">false</dei:AmendmentFlag>
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     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Dynamic Buffered Equity ETF 
    
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    <oef:ObjectiveHeading contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-248">
     
       
     Investment Objective 
       
    
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     Fidelity&#xae; Dynamic Buffered Equity ETF seeks capital appreciation. 
       
    
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    <oef:ExpenseHeading contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-258">
     
       
     Fee Table 
       
    
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    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-264">
     
       
     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_S000084304_contentCd_HBE-PRO" id="ixv-275">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000084304_contentCd_HBE-PRO"
      decimals="0"
      id="ixv-17600"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-290">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="6"
      id="ixv-17601"
      unitRef="pure">0.0048</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="6"
      id="ixv-17602"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="6"
      id="ixv-17603"
      unitRef="pure">0.0004</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="6"
      id="ixv-17604"
      unitRef="pure">0.0052</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="6"
      id="footnoteS000084304HBE-PROAOE_AC000248605_FW"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="6"
      id="ixv-17606"
      unitRef="pure">0.0048</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-364">2027-05-31</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-373">
     
       
     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_S000084304_Cid_C000248605"
      decimals="0"
      id="ixv-17607"
      unitRef="usd">49</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="0"
      id="ixv-17608"
      unitRef="usd">161</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="0"
      id="ixv-17609"
      unitRef="usd">285</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000084304_Cid_C000248605"
      decimals="0"
      id="ixv-17610"
      unitRef="usd">647</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-430">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-435">
     
       
     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 
       
     
       
       
       83 
       
       
     %  
      
       
     of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000084304_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17611"
      unitRef="pure">0.83</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-453">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-458">
     
       
      
      Normally investing at least 80% of assets in equity securities. 
      
     Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. 
      
       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 equity securities of companies with market capitalizations generally similar to companies in the S&amp;P 500&#xae; Index or Russell 1000 Index. 
      Generally using computer-aided, quantitative analysis of historical valuation, growth, profitability, and other factors to select a broadly diversified group of stocks that may have the potential to provide a higher total return than that of the S&amp;P 500&#xae;&#160;Index. 
      Employing a disciplined rules-based "Defensive Option Collar" strategy designed in combination with a diversified portfolio of equity securities to provide the fund with a significant portion of the returns associated with equity market investments while exposing investors to less risk than traditional long-only equity strategies. 
      The "Defensive Options Collar" strategy involves purchasing index put options to provide downside protection in certain market conditions (i.e., offset or mitigate a decrease in the value of the fund's investments) and selling index call options that provides income to substantially offset the cost of that downside protection. 
      Managing the options positions in a way that provides diversification of options strike prices and expirations. 
      Investing in domestic and foreign issuers. 
      Lending securities to earn income for the fund. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084304_contentCd_HBE-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-492">
     
       
      
      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_S000084304_contentCd_HBE-PRO_RiskMember_ForeignExposureMember"
      id="ixv-501">
     
       
      
      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_S000084304_contentCd_HBE-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-510">
     
       
      
      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. 
     Changes in the financial condition of an issuer or counterparty (e.g., broker-dealer or other borrower in a securities lending transaction) can increase the risk of default by an issuer or counterparty, which can affect a security's or instrument's value or result in delays in recovering securities and/or capital from a counterparty. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084304_contentCd_HBE-PRO_RiskMember_FluctuationOfNetAssetValueAndSharePriceMember"
      id="ixv-521">
     
       
      
      Fluctuation of Net Asset Value and Share Price. 
      
     The net asset value per share (NAV) of the fund will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares can be bought and sold in the secondary market at market prices. Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for the fund's shares may result in the fund's shares trading significantly above (at a premium) or below (at a discount) to NAV. 
     Given the nature of the relevant markets for certain of the fund's securities, shares may trade at a larger premium or discount to the NAV than shares of other ETFs. 
     In addition, in stressed market conditions or periods of market disruption or volatility,&#160;the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084304_contentCd_HBE-PRO_RiskMember_OptionsRiskMember"
      id="ixv-536">
     
       
      
      Options Risk. 
      
     The fund may purchase or write (i.e., sell) put and call options. Under certain circumstances, the fund may be required to buy or sell the underlying security or instrument (or settle in cash an amount of equal value) at a disadvantageous price, resulting in a loss. Options may involve economic leverage, which could result in greater volatility in price movement. Certain transaction costs associated with purchasing and writing options may impact the fund's returns. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084304_contentCd_HBE-PRO_RiskMember_TradingIssuesMember"
      id="ixv-545">
     
       
      
      Trading Issues. 
      
     There can be no assurance that an active trading market will be maintained. Market makers and Authorized Participants are not obligated to make a market in the fund's shares or to submit purchase and redemption orders for creation units. Decisions by market makers or Authorized Participants to reduce their role with respect to market making or creation and redemption activities during times of market stress, or a decline in the number of Authorized Participants due to decisions to exit the business, bankruptcy, or other factors, could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying value of the fund's portfolio securities and the market price of fund shares. In addition, trading may be halted, for example, due to market conditions. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084304_contentCd_HBE-PRO_RiskMember_QuantitativeInvestingMember"
      id="ixv-554">
     
       
      
      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_S000084304_contentCd_HBE-PRO_RiskMember_SecuritiesLendingRiskMember"
      id="ixv-563">
     
       
      
      Securities Lending Risk. 
      
     Securities lending involves the risk that the borrower may fail to return the securities loaned in a timely manner or at all. If the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, a fund could experience delays and costs in recovering the securities loaned or in gaining access to the collateral. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084304_contentCd_HBE-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-572">
     
       
     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_S000084304_contentCd_HBE-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-580">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-587">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-592">
     
       
      
       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 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-598"> 
        
      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_S000084304_contentCd_HBE-PRO" id="ixv-604"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-610"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-615">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000084304_Cid_C000248605_2025"
      decimals="INF"
      id="ixv-17612"
      unitRef="pure">0.1381</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-697">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000084304_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17613"
      unitRef="pure">0.0682</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-707">2025-09-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-712">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000084304_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17614"
      unitRef="pure">-0.0261</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-723">2025-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-728">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000084304_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17615"
      unitRef="pure">-0.0229</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-739">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-744">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock contextRef="Pid_S000084304_contentCd_HBE-PRO" id="ixv-749">
     
       
      
        
      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_S000084304_contentCd_HBE-PRO" id="ixv-752"> 
        
      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_S000084304_contentCd_HBE-PRO" id="ixv-759"> 
        
      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_S000084304_contentCd_HBE-PRO" id="ixv-764"> 
        
      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_S000084304_Cid_C000248605_ReturnBeforeTaxes_01"
      id="ixv-802">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Cid_C000248605_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-17616"
      unitRef="pure">0.1381</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Cid_C000248605_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084304AAR_A_RBT_loc"
      unitRef="pure">0.1374</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084304_Cid_C000248605_AfterTaxesOnDistributions_01"
      id="ixv-815">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Cid_C000248605_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-17618"
      unitRef="pure">0.1362</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Cid_C000248605_AfterTaxesOnDistributions_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084304AAR_A_ATD_loc"
      unitRef="pure">0.1355</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084304_Cid_C000248605_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-828">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Cid_C000248605_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-17620"
      unitRef="pure">0.0829</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Cid_C000248605_AfterTaxesOnDistributionsAndSales_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084304AAR_A_ATDS_loc"
      unitRef="pure">0.1057</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084304_Indexid_IXVJZ_contentCd_HBE-PRO_01"
      id="ixv-842">
         Cboe S&amp;P 500 95-110 Collar Index (CLL)
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Indexid_IXVJZ_contentCd_HBE-PRO_01"
      decimals="4"
      id="ixv-17622"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Indexid_IXVJZ_contentCd_HBE-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-17623"
      unitRef="pure">0.1130</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084304_Indexid_SP001_contentCd_HBE-PRO_01"
      id="ixv-861">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Indexid_SP001_contentCd_HBE-PRO_01"
      decimals="4"
      id="ixv-17624"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084304_Indexid_SP001_contentCd_HBE-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-17625"
      unitRef="pure">0.1865</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000084304_Cid_C000248605" id="ixv-893">2024-04-09</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-930">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Hedged Equity ETF 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-939">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-944">
     
       
     Fidelity&#xae; Hedged Equity ETF seeks capital appreciation. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-949">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-955">
     
       
     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_S000084303_contentCd_HBE-PRO" id="ixv-966">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000084303_contentCd_HBE-PRO"
      decimals="0"
      id="ixv-17626"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-981">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="6"
      id="ixv-17627"
      unitRef="pure">0.0048</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="6"
      id="ixv-17628"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="6"
      id="ixv-17629"
      unitRef="pure">0.0004</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="6"
      id="ixv-17630"
      unitRef="pure">0.0052</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="6"
      id="footnoteS000084303HBE-PROAOE_AC000248604_FW"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="6"
      id="ixv-17632"
      unitRef="pure">0.0048</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1055">2027-05-31</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1064">
     
       
     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_S000084303_Cid_C000248604"
      decimals="0"
      id="ixv-17633"
      unitRef="usd">49</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="0"
      id="ixv-17634"
      unitRef="usd">161</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="0"
      id="ixv-17635"
      unitRef="usd">285</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000084303_Cid_C000248604"
      decimals="0"
      id="ixv-17636"
      unitRef="usd">647</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1121">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1126">
     
       
     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 
       
     
       
       
       88 
       
       
     %  
      
       
     of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000084303_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17637"
      unitRef="pure">0.88</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1144">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1149">
     
       
      
      Normally investing at least 80% of assets in equity securities. 
      
     Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. 
      
       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 equity securities of companies with market capitalizations generally similar to companies in the S&amp;P 500&#xae; Index or Russell 1000 Index. 
      Generally using computer-aided, quantitative analysis of historical valuation, growth, profitability, and other factors to select a broadly diversified group of stocks that may have the potential to provide a higher total return than that of the S&amp;P 500&#xae;&#160;Index. 
      Employing a disciplined options-based strategy designed to provide downside protection in certain market conditions (i.e., offset or mitigate a decrease in the value of the fund's investments). The extent of this protection will be determined primarily based on the cost of the put options in the marketplace. 
      Managing the options positions in a way that provides diversification of options strike prices and expirations. 
      Investing in domestic and foreign issuers. 
      Lending securities to earn income for the fund. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084303_contentCd_HBE-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-1181">
     
       
      
      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_S000084303_contentCd_HBE-PRO_RiskMember_ForeignExposureMember"
      id="ixv-1190">
     
       
      
      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_S000084303_contentCd_HBE-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-1199">
     
       
      
      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. 
     Changes in the financial condition of an issuer or counterparty (e.g., broker-dealer or other borrower in a securities lending transaction) can increase the risk of default by an issuer or counterparty, which can affect a security's or instrument's value or result in delays in recovering securities and/or capital from a counterparty. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084303_contentCd_HBE-PRO_RiskMember_FluctuationOfNetAssetValueAndSharePriceMember"
      id="ixv-1210">
     
       
      
      Fluctuation of Net Asset Value and Share Price. 
      
     The net asset value per share (NAV) of the fund will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares can be bought and sold in the secondary market at market prices. Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for the fund's shares may result in the fund's shares trading significantly above (at a premium) or below (at a discount) to NAV. 
     Given the nature of the relevant markets for certain of the fund's securities, shares may trade at a larger premium or discount to the NAV than shares of other ETFs. 
     In addition, in stressed market conditions or periods of market disruption or volatility,&#160;the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084303_contentCd_HBE-PRO_RiskMember_OptionsRiskMember"
      id="ixv-1225">
     
       
      
      Options Risk. 
      
     The fund may purchase or write (i.e., sell) put and call options. Under certain circumstances, the fund may be required to buy or sell the underlying security or instrument (or settle in cash an amount of equal value) at a disadvantageous price, resulting in a loss. Options may involve economic leverage, which could result in greater volatility in price movement. Certain transaction costs associated with purchasing and writing options may impact the fund's returns. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084303_contentCd_HBE-PRO_RiskMember_TradingIssuesMember"
      id="ixv-1234">
     
       
      
      Trading Issues. 
      
     There can be no assurance that an active trading market will be maintained. Market makers and Authorized Participants are not obligated to make a market in the fund's shares or to submit purchase and redemption orders for creation units. Decisions by market makers or Authorized Participants to reduce their role with respect to market making or creation and redemption activities during times of market stress, or a decline in the number of Authorized Participants due to decisions to exit the business, bankruptcy, or other factors, could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying value of the fund's portfolio securities and the market price of fund shares. In addition, trading may be halted, for example, due to market conditions. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084303_contentCd_HBE-PRO_RiskMember_QuantitativeInvestingMember"
      id="ixv-1243">
     
       
      
      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_S000084303_contentCd_HBE-PRO_RiskMember_SecuritiesLendingRiskMember"
      id="ixv-1252">
     
       
      
      Securities Lending Risk. 
      
     Securities lending involves the risk that the borrower may fail to return the securities loaned in a timely manner or at all. If the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, a fund could experience delays and costs in recovering the securities loaned or in gaining access to the collateral. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084303_contentCd_HBE-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-1261">
     
       
     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_S000084303_contentCd_HBE-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-1269">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1276">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1281">
     
       
      
       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 
       
      
        
      www.fidelity.com  
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1287"> 
        
      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_S000084303_contentCd_HBE-PRO" id="ixv-1293"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1299"> 
        
      www.fidelity.com  
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1304">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000084303_Cid_C000248604_2025"
      decimals="INF"
      id="ixv-17638"
      unitRef="pure">0.1307</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1386">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000084303_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17639"
      unitRef="pure">0.0964</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1396">2025-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1401">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000084303_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17640"
      unitRef="pure">-0.0380</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1412">2025-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1417">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000084303_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17641"
      unitRef="pure">-0.0450</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1428">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1433">
     
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock contextRef="Pid_S000084303_contentCd_HBE-PRO" id="ixv-1438">
     
       
      
        
      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_S000084303_contentCd_HBE-PRO" id="ixv-1441"> 
        
      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_S000084303_contentCd_HBE-PRO" id="ixv-1448"> 
        
      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_S000084303_contentCd_HBE-PRO" id="ixv-1453"> 
        
      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_S000084303_Cid_C000248604_ReturnBeforeTaxes_01"
      id="ixv-1491">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Cid_C000248604_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-17642"
      unitRef="pure">0.1307</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Cid_C000248604_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084303AAR_A_RBT_loc"
      unitRef="pure">0.1371</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084303_Cid_C000248604_AfterTaxesOnDistributions_01"
      id="ixv-1504">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Cid_C000248604_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-17644"
      unitRef="pure">0.1289</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Cid_C000248604_AfterTaxesOnDistributions_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084303AAR_A_ATD_loc"
      unitRef="pure">0.1352</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084303_Cid_C000248604_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-1517">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Cid_C000248604_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-17646"
      unitRef="pure">0.0785</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Cid_C000248604_AfterTaxesOnDistributionsAndSales_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084303AAR_A_ATDS_loc"
      unitRef="pure">0.1054</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084303_Indexid_IXUYK_contentCd_HBE-PRO_01"
      id="ixv-1531">
         Cboe S&amp;P 500 5% Put Protection Index (PPUT)
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Indexid_IXUYK_contentCd_HBE-PRO_01"
      decimals="4"
      id="ixv-17648"
      unitRef="pure">0.1433</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Indexid_IXUYK_contentCd_HBE-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-17649"
      unitRef="pure">0.1462</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084303_Indexid_SP001_contentCd_HBE-PRO_01"
      id="ixv-1550">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Indexid_SP001_contentCd_HBE-PRO_01"
      decimals="4"
      id="ixv-17650"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084303_Indexid_SP001_contentCd_HBE-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-17651"
      unitRef="pure">0.1865</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000084303_Cid_C000248604" id="ixv-1582">2024-04-09</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1619">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Yield Enhanced Equity ETF 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1628">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1633">
     
       
     Fidelity&#xae; Yield Enhanced Equity ETF seeks current income while maintaining prospects for capital appreciation. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1638">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1644">
     
       
     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_S000084305_contentCd_HBE-PRO" id="ixv-1655">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000084305_contentCd_HBE-PRO"
      decimals="0"
      id="ixv-17652"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1670">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="6"
      id="ixv-17653"
      unitRef="pure">0.0028</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="6"
      id="ixv-17654"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="6"
      id="ixv-17655"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="6"
      id="ixv-17656"
      unitRef="pure">0.0031</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="6"
      id="footnoteS000084305HBE-PROAOE_AC000248606_FW"
      unitRef="pure">-0.0003</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="6"
      id="ixv-17658"
      unitRef="pure">0.0028</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1746">2027-05-31</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1755">
     
       
     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_S000084305_Cid_C000248606"
      decimals="0"
      id="ixv-17659"
      unitRef="usd">29</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="0"
      id="ixv-17660"
      unitRef="usd">96</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="0"
      id="ixv-17661"
      unitRef="usd">170</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000084305_Cid_C000248606"
      decimals="0"
      id="ixv-17662"
      unitRef="usd">389</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1812">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1817">
     
       
     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 
       
     
       
       
       90 
       
       
     %  
      
       
     of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000084305_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17663"
      unitRef="pure">0.90</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1835">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1840">
     
       
      
      Normally investing at least 80% of assets in equity securities. 
      
     Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. 
      
       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 equity securities of companies with market capitalizations generally similar to companies in the S&amp;P 500&#xae; Index or Russell 1000 Index. 
      Generally using computer-aided, quantitative analysis of historical valuation, growth, profitability, and other factors to select a broadly diversified group of stocks that may have the potential to provide a higher total return than that of the S&amp;P 500&#xae;&#160;Index. 
      Selling (writing) call options on a large cap equity index, such as the S&amp;P 500&#xae; Index. 
      Employing a disciplined options-based strategy designed to provide income. 
      Investing in domestic and foreign issuers. 
      Lending securities to earn income for the fund. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-1874">
     
       
      
      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_S000084305_contentCd_HBE-PRO_RiskMember_IncomeRiskMember"
      id="ixv-1883">
     
       
      
      Income Risk. 
      
     The fund's ability to distribute income to shareholders will depend on the yield available on the common stocks held by the fund and the premiums received by the fund with respect to its written call options. Changes in the dividend policies of companies held by the fund could make it difficult for the fund to provide a predictable level of income. In addition, the premiums received by the fund with respect to its written call options will vary over time and based on market conditions. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_ForeignExposureMember"
      id="ixv-1892">
     
       
      
      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_S000084305_contentCd_HBE-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-1901">
     
       
      
      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. 
     Changes in the financial condition of an issuer or counterparty (e.g., broker-dealer or other borrower in a securities lending transaction) can increase the risk of default by an issuer or counterparty, which can affect a security's or instrument's value or result in delays in recovering securities and/or capital from a counterparty. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_FluctuationOfNetAssetValueAndSharePriceMember"
      id="ixv-1912">
     
       
      
      Fluctuation of Net Asset Value and Share Price. 
      
     The net asset value per share (NAV) of the fund will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares can be bought and sold in the secondary market at market prices. Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for the fund's shares may result in the fund's shares trading significantly above (at a premium) or below (at a discount) to NAV. 
     Given the nature of the relevant markets for certain of the fund's securities, shares may trade at a larger premium or discount to the NAV than shares of other ETFs. 
     In addition, in stressed market conditions or periods of market disruption or volatility,&#160;the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_TradingIssuesMember"
      id="ixv-1927">
     
       
      
      Trading Issues. 
      
     There can be no assurance that an active trading market will be maintained. Market makers and Authorized Participants are not obligated to make a market in the fund's shares or to submit purchase and redemption orders for creation units. Decisions by market makers or Authorized Participants to reduce their role with respect to market making or creation and redemption activities during times of market stress, or a decline in the number of Authorized Participants due to decisions to exit the business, bankruptcy, or other factors, could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying value of the fund's portfolio securities and the market price of fund shares. In addition, trading may be halted, for example, due to market conditions. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_QuantitativeInvestingMember"
      id="ixv-1936">
     
       
      
      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_S000084305_contentCd_HBE-PRO_RiskMember_SecuritiesLendingRiskMember"
      id="ixv-1945">
     
       
      
      Securities Lending Risk. 
      
     Securities lending involves the risk that the borrower may fail to return the securities loaned in a timely manner or at all. If the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, a fund could experience delays and costs in recovering the securities loaned or in gaining access to the collateral. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_CallOptionsWritingRiskMember"
      id="ixv-1954">
     
       
      
      Call Options Writing Risk.  
      
     Writing call options involves the risk that the fund may be required to sell the underlying security or instrument (or settle in cash an amount of equal value) at a disadvantageous price or below the market price of such underlying security or instrument, at the time the option is exercised. As the writer of a call option, the fund forgoes, during the option's life, the opportunity to profit from increases in the market value of the underlying security or instrument covering the option above the sum of the premium and the exercise price but retains the risk of loss should the price of the underlying security or instrument decline. Additionally, the fund's call option writing strategy may not fully protect it against declines in the value of the market. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_DistributionTaxRiskMember"
      id="ixv-1963">
     
       
      
      Distribution Tax Risk.  
      
     While the fund will normally pay its income as distributions, the fund's distributions may exceed the fund's income and gains for the fund's taxable year. Distributions in excess of the fund's current and accumulated earnings and profits will be treated as a return of capital and may have a negative impact on the fund. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000084305_contentCd_HBE-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-1973">
     
       
     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_S000084305_contentCd_HBE-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-1981">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1988">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1993">
     
       
      
       
     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 
       
      
        
       
        
      www.fidelity.com 
        
      
       
     for more recent performance information. 
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-1999"> 
        
      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_S000084305_contentCd_HBE-PRO" id="ixv-2009"> 
        
      Past performance (before and after taxes) is not an indication of future performance. 
        
     </oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2015"> 
        
       
        
      www.fidelity.com 
        
     </oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2022">
     
       
     Year-by-Year Returns  
    
   </oef:BarChartHeading>
    <oef:AnnlRtrPct
      contextRef="Pid_S000084305_Cid_C000248606_2025"
      decimals="INF"
      id="ixv-17664"
      unitRef="pure">0.1545</oef:AnnlRtrPct>
    <oef:HighestQuarterlyReturnLabel contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2104">
          &#160;&#160;&#160;Highest Quarter Return
        </oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Pid_S000084305_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17665"
      unitRef="pure">0.0774</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2114">2025-09-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2119">
          &#160;&#160;&#160;Lowest Quarter Return
        </oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Pid_S000084305_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17666"
      unitRef="pure">-0.0377</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2130">2025-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2135">
          &#160;&#160;&#160;Year-to-Date Return
        </oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="Pid_S000084305_contentCd_HBE-PRO"
      decimals="4"
      id="ixv-17667"
      unitRef="pure">-0.0239</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2146">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2151">
     
       
      
       
     Average Annual Returns 
       
    
   </oef:PerformanceTableHeading>
    <oef:PerformanceTableNarrativeTextBlock contextRef="Pid_S000084305_contentCd_HBE-PRO" id="ixv-2157">
     
       
      
        
      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_S000084305_contentCd_HBE-PRO" id="ixv-2160"> 
        
      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_S000084305_contentCd_HBE-PRO" id="ixv-2167"> 
        
      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_S000084305_contentCd_HBE-PRO" id="ixv-2172"> 
        
      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_S000084305_Cid_C000248606_ReturnBeforeTaxes_01"
      id="ixv-2211">
         Return Before Taxes
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Cid_C000248606_ReturnBeforeTaxes_01"
      decimals="4"
      id="ixv-17668"
      unitRef="pure">0.1545</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Cid_C000248606_ReturnBeforeTaxes_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084305AAR_A_RBT_loc"
      unitRef="pure">0.1664</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084305_Cid_C000248606_AfterTaxesOnDistributions_01"
      id="ixv-2224">
         Return After Taxes on Distributions
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Cid_C000248606_AfterTaxesOnDistributions_01"
      decimals="4"
      id="ixv-17670"
      unitRef="pure">0.1311</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Cid_C000248606_AfterTaxesOnDistributions_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084305AAR_A_ATD_loc"
      unitRef="pure">0.1506</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084305_Cid_C000248606_AfterTaxesOnDistributionsAndSales_01"
      id="ixv-2237">
         Return After Taxes on Distributions and Sale of Fund Shares
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Cid_C000248606_AfterTaxesOnDistributionsAndSales_01"
      decimals="4"
      id="ixv-17672"
      unitRef="pure">0.0921</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Cid_C000248606_AfterTaxesOnDistributionsAndSales_AverageAnnualReturnSinceInception"
      decimals="4"
      id="footnoteHBE-PROS000084305AAR_A_ATDS_loc"
      unitRef="pure">0.1218</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084305_Indexid_IXT48_contentCd_HBE-PRO_01"
      id="ixv-2251">
         Cboe S&amp;P 500 2% OTM BuyWrite Index (BXY)
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Indexid_IXT48_contentCd_HBE-PRO_01"
      decimals="4"
      id="ixv-17674"
      unitRef="pure">0.1106</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Indexid_IXT48_contentCd_HBE-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-17675"
      unitRef="pure">0.1461</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Pid_S000084305_Indexid_SP001_contentCd_HBE-PRO_01"
      id="ixv-2270">
         S&amp;P 500&#xae; Index
        </oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Indexid_SP001_contentCd_HBE-PRO_01"
      decimals="4"
      id="ixv-17676"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Pid_S000084305_Indexid_SP001_contentCd_HBE-PRO_AverageAnnualReturnSinceInception"
      decimals="4"
      id="ixv-17677"
      unitRef="pure">0.1865</oef:AvgAnnlRtrPct>
    <oef:AnnualReturnInceptionDate contextRef="Pid_S000084305_Cid_C000248606" id="ixv-2302">2024-04-09</oef:AnnualReturnInceptionDate>
    <oef:RiskReturnHeading contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4630">
     
       
     Fund Summary 
       
     Fund: 
     Fidelity&#xae; Managed Futures ETF 
    
   </oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4639">
     
       
     Investment Objective 
       
    
   </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4644">
     
       
     Fidelity&#xae; Managed Futures ETF seeks capital appreciation. 
       
    
   </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4649">
     
       
     Fee Table 
       
    
   </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4655">
     
       
     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_S000092140_contentCd_MFE-PRO" id="ixv-4666">
     
       
     Shareholder fees 
       
    
   </oef:ShareholderFeesCaption>
    <oef:ShareholderFeeOther
      contextRef="Pid_S000092140_contentCd_MFE-PRO"
      decimals="0"
      id="ixv-17678"
      unitRef="usd">0</oef:ShareholderFeeOther>
    <oef:OperatingExpensesCaption contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4681">
     
       
     Annual Operating Expenses 
       
    
   </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="6"
      id="ixv-17679"
      unitRef="pure">0.0080</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="6"
      id="ixv-17680"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="6"
      id="ixv-17681"
      unitRef="pure">0.0002</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="6"
      id="ixv-17682"
      unitRef="pure">0.0082</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="6"
      id="footnoteS000092140MFE-PROAOE_AC000260067_FW"
      unitRef="pure">-0.0002</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="6"
      id="ixv-17684"
      unitRef="pure">0.0080</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4757">2027-05-31</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4766">
     
       
     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_S000092140_Cid_C000260067"
      decimals="0"
      id="ixv-17685"
      unitRef="usd">82</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="0"
      id="ixv-17686"
      unitRef="usd">259</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="0"
      id="ixv-17687"
      unitRef="usd">452</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="Pid_S000092140_Cid_C000260067"
      decimals="0"
      id="ixv-17688"
      unitRef="usd">1011</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4824">
     
       
     Portfolio Turnover 
       
    
   </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4829">
     
       
     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. 
       
     For the period from June 3, 2025 to January 31, 2026, the fund's portfolio turnover rate was 
       
     
       
       1 
       
       
     % (annualized) of the average value of its portfolio. 
       
    
   </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Pid_S000092140_contentCd_MFE-PRO"
      decimals="4"
      id="ixv-17689"
      unitRef="pure">0.01</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4840">
     
       
     Principal Investment Strategies 
       
    
   </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-4845">
     
       
      
      Seeking to achieve its investment objective by pursuing a strategy intended to capture the persistence of price trends (up and/or down) observed across equity, fixed income, currency and commodity markets. The fund's investment strategy utilizes a combination of equity, fixed income, currency and commodity derivatives, as well as certain direct investments, to provide exposure to these markets and price trends. Trend following strategies attempt to capture trends in price movements in the markets they allocate to, generally taking long positions when prices move upwards, and taking short positions when they move downwards. 
      The Adviser may also utilize non-trend factor strategies, which focus on quantitative analysis of fundamental, non-price data (e.g., carry, volatility) to achieve the fund's investment objective. 
      Executing the fund's strategy through investments in derivative instruments that may have a leveraging effect on the fund, including futures (such as equity index futures, commodity futures, and currency futures), options on futures, options, swaps (including excess return swaps and total return swaps) and other derivative instruments. The fund may have long/short exposure via these instruments. In addition to creating and/or adjusting the fund's investment exposure, the fund's strategy may also be used to enhance total return, to hedge risks, to manage certain investment risk, and/or to manage volatility. 
      Employing various proprietary quantitative measures and qualitative techniques to evaluate price trends and non-trend factors across the asset classes in which the fund invests. The fund's quantitative measures are developed and maintained by the Adviser and are subject to change over time without notice in the Adviser's discretion. The Adviser retains discretion over the target asset allocations, which may include positions that differ from the target allocations indicated by the quantitative measures.  
      Investing up to 25% of assets in Fidelity Managed Futures Cayman Ltd., a wholly-owned subsidiary organized under the laws of the Cayman Islands that invests in commodity-linked derivatives and related collateral (cash or cash equivalent investments, short-term investment funds and/or U.S. Government securities), commodity-related exchange-traded funds (ETFs), and commodity-related exchange-traded notes (ETNs). Additionally, a small percentage of the fund's assets is expected to be invested through the Subsidiary in cash-settled bitcoin and ether futures traded on futures exchanges registered with the Commodity Futures Trading Commission (CFTC), and affiliated and unaffiliated bitcoin and ether ETFs or exchange-traded products (ETPs). The fund will not invest in bitcoin or ether directly. 
      Investing a significant portion of the fund's assets in U.S. Government securities, short-term investment funds, cash, and cash equivalents for investment purposes and to maintain collateral to cover derivatives positions. 
      
    
   </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_ShortSalesAndLeverageRiskMember"
      id="ixv-4863">
     
       
      
      Short Sales and Leverage Risk. 
      
     Short sales pose more risk than long positions. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Regulatory bans on certain short selling activities may prevent a fund from fully implementing its strategy. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly. The fund's use of futures, forward contracts, options, swaps, and other derivative instruments may result in losses. The value of these derivative instruments may pose risks in addition to and greater than those associated with investing directly in securities, currencies or other instruments and may be illiquid or less liquid, volatile, difficult to price and leveraged so that small changes in the value of underlying instruments may produce disproportionate losses to the fund. The use of derivatives is a highly specialized&#160;activity that involves investment techniques and risks different from those associated with investments in more traditional securities and instruments. Moreover, a relatively small price movement in a derivative contract may result in substantial losses to the fund, exceeding the amount of the margin paid. The use of derivatives can increase the fund's risk exposure to underlying assets and their attendant risks, while also exposing the fund to the risk of mispricing or other improper valuation and the risk that changes in the value of a derivative may not correlate as anticipated with the underlying asset, rate, index or overall securities markets, thereby reducing their effectiveness. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_StockMarketVolatilityMember"
      id="ixv-4874">
     
       
      
      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_S000092140_contentCd_MFE-PRO_RiskMember_InterestRateChangesMember"
      id="ixv-4883">
     
       
      
      Interest Rate Changes. 
      
     Interest rate increases can cause the price of a debt security to decrease. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_SubsidiaryRiskMember"
      id="ixv-4892">
     
       
      
      Subsidiary Risk. 
      
     Investment in Fidelity Managed Futures Cayman Ltd, an unregistered subsidiary, is not subject to the investor protections of the Investment Company Act of 1940 (1940 Act) and is subject to the risks associated with investing in derivatives and commodity-linked investing in general. Changes in tax and other laws could negatively affect investments in the subsidiary. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_IssuerSpecificChangesMember"
      id="ixv-4901">
     
       
      
      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. 
     Changes in the financial condition of an issuer or counterparty (e.g., broker-dealer or other borrower in a securities lending transaction) can increase the risk of default by an issuer or counterparty, which can affect a security's or instrument's value or result in delays in recovering securities and/or capital from a counterparty. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_USGovernmentObligationsRiskMember"
      id="ixv-4912">
     
       
      
      U.S. Government Obligations Risk. 
      
     Certain securities in which the fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_FluctuationOfNetAssetValueAndSharePriceMember"
      id="ixv-4921">
     
       
      
      Fluctuation of Net Asset Value and Share Price. 
      
     The net asset value per share (NAV) of the fund will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares can be bought and sold in the secondary market at market prices. Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for the fund's shares may result in the fund's shares trading significantly above (at a premium) or below (at a discount) to NAV. 
     Given the nature of the relevant markets for certain of the fund's securities, shares may trade at a larger premium or discount to the NAV than shares of other ETFs. 
     In addition, in stressed market conditions or periods of market disruption or volatility,&#160;the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_TradingIssuesMember"
      id="ixv-4936">
     
       
      
      Trading Issues. 
      
     There can be no assurance that an active trading market will be maintained. Market makers and Authorized Participants are not obligated to make a market in the fund's shares or to submit purchase and redemption orders for creation units. Decisions by market makers or Authorized Participants to reduce their role with respect to market making or creation and redemption activities during times of market stress, or a decline in the number of Authorized Participants due to decisions to exit the business, bankruptcy, or other factors, could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying value of the fund's portfolio securities and the market price of fund shares. In addition, trading may be halted, for example, due to market conditions. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_CashTransactionsRiskMember"
      id="ixv-4945">
     
       
      
      Cash Transactions Risk. 
      
     Unlike certain ETFs, the fund may effect some or all creations and redemptions using cash, rather than in-kind securities. As a result, an investment in the fund may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_QuantitativeInvestingMember"
      id="ixv-4954">
     
       
      
      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. 
     In making investment allocation decisions, the Adviser utilizes quantitative models that may be proprietary or developed by third parties. These models are used by the Adviser to determine the fund's target asset allocation. The fund's investment models used in making investment allocation decisions may not adequately consider certain factors, may contain design flaws or faulty assumptions, and may rely on incomplete or inaccurate data, any of which may result in a decline in the value of your investment. There can be no assurance that the models used by the Adviser will remain viable, due to various factors, which may include the quality of the data input into the models and the assumptions underlying such models, which to varying degrees involve the exercise of judgment, as well as the possibility of errors in constructing or using the model.  
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_CommodityLinkedInvestingMember"
      id="ixv-4965">
     
       
      
      Commodity-Linked Investing. 
      
     The value of commodities and commodity-linked investments may be affected by the performance of the overall commodities markets as well as weather, political, tax, and other regulatory and market developments. Commodity-linked investments may be more volatile and less liquid than the underlying commodity, instruments, or measures. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_CommodityFuturesMember"
      id="ixv-4974">
     
       
      
      Commodity Futures. 
      
     Investments in commodity futures contracts are also subject to the risk of the failure of any of the exchanges on which the fund's positions trade or of its clearinghouses or counterparties. In addition, certain commodity exchanges limit fluctuations in certain futures contract prices during a single day by regulations referred to as "daily price fluctuation limits" or "daily limits." Under such daily limits, during a single trading day no trades may be executed at prices beyond the daily limit. If triggered, these limits could prevent the fund from liquidating unfavorable positions and subject the fund to losses or prevent it from entering into desired trades during the particular trading day. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_SwapsRiskMember"
      id="ixv-4983">
     
       
      
      Swaps Risk. 
      
     The fund may invest in excess return and total return swaps. Swaps may be difficult to value and may be illiquid. The fund could experience losses if the underlying asset or reference does not perform as anticipated. Certain swaps have the potential for unlimited losses, regardless of the size of the initial investment. 
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_InvestingInOtherFundsMember"
      id="ixv-4992">
     
       
      
      Investing in Other Funds. 
      
     Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.  
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_RiskNondiversifiedStatusMember"
      id="ixv-5001">
     
       
     In addition, the fund is classified as non-diversified under the Investment Company Act of 1940 (1940 Act), which means that it has the ability to invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund. 
       
    
   </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Pid_S000092140_contentCd_MFE-PRO_RiskMember_RiskNotInsuredDepositoryInstitutionMember"
      id="ixv-5006">
     
       
     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_S000092140_contentCd_MFE-PRO_RiskMember_RiskLoseMoneyMember"
      id="ixv-5014">
     
       
     &#160; 
       
     You could lose money by investing in the fund. 
       
    
   </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-5021">
     
       
     Performance 
       
    
   </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-5026">
     
       
      
        
      Performance history will be available for the fund after the fund has been in operation for one calendar year. 
        
      
    
   </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceOneYearOrLess contextRef="Pid_S000092140_contentCd_MFE-PRO" id="ixv-5029"> 
        
      Performance history will be available for the fund after the fund has been in operation for one calendar year. 
        
     </oef:PerformanceOneYearOrLess>
    <link:footnoteLink
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        <link:footnote id="footnoteS000084304HBE-PROAOE_A" xlink:label="footnoteS000084304HBE-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">Fidelity Diversifying Solutions LLC (FDS) has contractually agreed to reimburse the fund to the extent that total operating expenses (excluding interest, certain taxes, proxy and shareholder meeting expenses, extraordinary expenses, and acquired fund fees and expenses (including fees and expenses associated with a wholly owned subsidiary), if any, as well as non-operating expenses such as brokerage commissions and fees and expenses associated with the fund's securities lending program, if applicable), as a percentage of its average net assets, exceed 0.48% (the Expense Cap). If at any time during the current fiscal year expenses for the fund fall below the Expense Cap, FDS reserves the right to recoup through the end of the fiscal year any expenses that were reimbursed during the current fiscal year up to, but not in excess of, the Expense Cap. This arrangement will remain in effect through </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">May 31, </xhtml:span><xhtml:span class="delClass" style="color:#ff0000; display:none;"> 
       </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; ">2027</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">. FDS may not terminate this arrangement before the expiration date without the approval of the Board of Trustees and may extend it in its discretion after that date.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
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        <link:footnote id="footnoteHBE-PROS000084304AAR_A" xlink:label="footnoteHBE-PROS000084304AAR_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
      class="redlineClass"
      style="font-family:Arial; font-size:4.5pt; vertical-align:3pt; ">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span
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      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">April 9, 2024</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
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        <link:footnote id="footnoteS000084303HBE-PROAOE_A" xlink:label="footnoteS000084303HBE-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">Fidelity Diversifying Solutions LLC (FDS) has contractually agreed to reimburse the fund to the extent that total operating expenses (excluding interest, certain taxes, proxy and shareholder meeting expenses, extraordinary expenses, and acquired fund fees and expenses (including fees and expenses associated with a wholly owned subsidiary), if any, as well as non-operating expenses such as brokerage commissions and fees and expenses associated with the fund's securities lending program, if applicable), as a percentage of its average net assets, exceed 0.48% (the Expense Cap). If at any time during the current fiscal year expenses for the fund fall below the Expense Cap, FDS reserves the right to recoup through the end of the fiscal year any expenses that were reimbursed during the current fiscal year up to, but not in excess of, the Expense Cap. This arrangement will remain in effect through </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">May 31, </xhtml:span><xhtml:span class="delClass" style="color:#ff0000; display:none;"> 
       </xhtml:span><xhtml:span
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      style="font-family:Arial; font-size:8.5pt; ">2027</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">. FDS may not terminate this arrangement before the expiration date without the approval of the Board of Trustees and may extend it in its discretion after that date.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteHBE-PROS000084303AAR_A" xlink:label="footnoteHBE-PROS000084303AAR_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
      class="redlineClass"
      style="font-family:Arial; font-size:4.5pt; vertical-align:3pt; ">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">April 9, 2024</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
        <link:footnoteArc
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        <link:footnote id="footnoteS000084305HBE-PROAOE_A" xlink:label="footnoteS000084305HBE-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">Fidelity Diversifying Solutions LLC (FDS) has contractually agreed to reimburse the fund to the extent that total operating expenses (excluding </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; ">management fee waivers, </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">interest, certain taxes, proxy and shareholder meeting expenses, extraordinary expenses, and acquired fund fees and expenses (including fees and expenses associated with a wholly owned subsidiary), if any, as well as non-operating expenses such as brokerage commissions and fees and expenses associated with the fund's securities lending program, if applicable), as a percentage of its average net assets, exceed 0.28% (the Expense Cap). If at any time during the current fiscal year expenses for the fund fall below the Expense Cap, FDS reserves the right to recoup through the end of the fiscal year any expenses that were reimbursed during the current fiscal year up to, but not in excess of, the Expense Cap. This arrangement will remain in effect through </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">May 31, </xhtml:span><xhtml:span class="delClass" style="color:#ff0000; display:none;"> 
       </xhtml:span><xhtml:span
      class="redlineClass"
      style="font-family:Arial; font-size:8.5pt; ">2027</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt">. FDS may not terminate this arrangement before the expiration date without the approval of the Board of Trustees and may extend it in its discretion after that date.</xhtml:span><xhtml:span> </xhtml:span></xhtml:div></link:footnote>
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        <link:footnote id="footnoteHBE-PROS000084305AAR_A" xlink:label="footnoteHBE-PROS000084305AAR_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
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      style="font-family:Arial; font-size:4.5pt; vertical-align:3pt; ">A</xhtml:span><xhtml:span> </xhtml:span><xhtml:span
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      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">From </xhtml:span><xhtml:span> </xhtml:span><xhtml:span
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      style="font-family:Arial; font-size:8.5pt; font-style:italic; ">April 9, 2024</xhtml:span><xhtml:span> </xhtml:span><xhtml:span> </xhtml:span><xhtml:span
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      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="footnoteS000092140MFE-PROAOE_A" xlink:label="footnoteS000092140MFE-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 class="delClass" style="color:#ff0000; display:none;"> 
      </xhtml:span><xhtml:span
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      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">Fidelity Diversifying Solutions LLC (FDS) has contractually agreed to reimburse the fund to the extent that total operating expenses (excluding interest, certain taxes, proxy and shareholder meeting expenses, extraordinary expenses, and acquired fund fees and expenses (including fees and expenses associated with a wholly owned subsidiary), if any, as well as non-operating expenses such as brokerage commissions and fees and expenses associated with the fund's securities lending program, if applicable), as a percentage of its average net assets, exceed 0.80% (the Expense Cap). If at any time during the current fiscal year expenses for the fund fall below the Expense Cap, FDS reserves the right to recoup through the end of the fiscal year any expenses that were reimbursed during the current fiscal year up to, but not in excess of, the Expense Cap. This arrangement will remain in effect through </xhtml:span><xhtml:span> </xhtml:span><xhtml:span style="font-family:Arial; font-size:8.5pt; font-style:italic">May 31, </xhtml:span><xhtml:span class="delClass" style="color:#ff0000; display:none;"> 
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