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        <measure>iso4217:USD</measure>
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    <unit id="pure">
        <measure>pure</measure>
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    <dei:DocumentType contextRef="Trust">485BPOS</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="Trust">2022-09-30</dei:DocumentPeriodEndDate>
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    <dei:EntityRegistrantName contextRef="Trust">Fidelity Covington Trust</dei:EntityRegistrantName>
    <rr:RiskReturnHeading contextRef="S000054750CPF-PRO">
  Fund Summary

   Fund:



    Fidelity&#xae; Dividend ETF for Rising Rates



 </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000054750CPF-PRO">
  Investment Objective
 </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000054750CPF-PRO">
  Fidelity&#xae; Dividend ETF for Rising Rates seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity Dividend Index for Rising Rates&#x2120;.
 </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000054750CPF-PRO">
  Fee Table
 </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000054750CPF-PRO">

   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 table or example below.


 </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000054750CPF-PRO">
  Shareholder fees
 </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000054750CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000054750CPF-PRO">
  Annual Operating Expenses
 </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054750C000171931"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054750C000171931"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054750C000171931"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054750C000171931"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000054750CPF-PRO">
  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:
 </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054750C000171931"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054750C000171931"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054750C000171931"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054750C000171931"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000054750CPF-PRO">
   Portfolio Turnover
  </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000054750CPF-PRO">
   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

     28

   % of the average value of its portfolio.
  </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000054750CPF-PRO" decimals="4" unitRef="pure">0.28</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000054750CPF-PRO">
   Principal Investment Strategies
  </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000054750CPF-PRO">

    Normally investing at least 80% of assets in securities included in the Fidelity Dividend Index for Rising RatesSM and in depositary receipts representing securities included in the index. The Fidelity Dividend Index for Rising RatesSM is designed to reflect the performance of stocks of large and mid-capitalization dividend-paying companies that are expected to continue to pay and grow their dividends and have a positive correlation of returns to increasing 10-year U.S. Treasury yields.
    Lending securities to earn income for the fund.


  </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000054750CPF-PRO">
   Principal Investment Risks
  </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000054750CPF-PRO">

    Stock Market Volatility.


    Stock markets and, as a result, stock market indexes, 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.


    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.


    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.


    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.


    Correlation to Index.


    The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


    Passive Management Risk.


    The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


    The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


    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. In addition, trading may be halted, for example, due to market conditions.


    Mid Cap Investing.


    The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


    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.


    Dividend Paying Securities.


    Although the fund's underlying index uses a rules-based proprietary index methodology that is designed to identify stocks of dividend-paying companies that will continue to pay and grow their dividends, there is no guarantee that this methodology will be successful. The fund may underperform funds that invest more broadly. If securities held by the fund reduce or stop paying dividends, the fund's ability to generate dividend income may be affected.



     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
     .


     &#160;
     You could lose money by investing in the fund.



  </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000054750CPF-PRO">
     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
     .
    </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000054750CPF-PRO">
     &#160;
     You could lose money by investing in the fund.
    </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000054750CPF-PRO">
   Performance
  </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000054750CPF-PRO">

    The following information is intended to help you understand the risks of investing in the fund.



     The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

     The indexes have 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.


  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000054750CPF-PRO">
     The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
    </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000054750CPF-PRO">
      Past performance (before and after taxes) is not an indication of future performance.
    </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000054750CPF-PRO">
      www.fidelity.com
    </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000054750CPF-PRO">
   Year-by-Year Returns
  </rr:BarChartHeading>
    <rr:AnnualReturn2017
      contextRef="S000054750C000171931"
      decimals="INF"
      unitRef="pure">0.1951</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000054750C000171931"
      decimals="INF"
      unitRef="pure">-0.0323</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000054750C000171931"
      decimals="INF"
      unitRef="pure">0.2655</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000054750C000171931"
      decimals="INF"
      unitRef="pure">0.0822</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000054750C000171931"
      decimals="INF"
      unitRef="pure">0.2602</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000054750CPF-PRO">
       &#160;&#160;&#160;Highest Quarter Return
     </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000054750CPF-PRO" decimals="4" unitRef="pure">0.1726</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000054750CPF-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000054750CPF-PRO">
       &#160;&#160;&#160;Lowest Quarter Return
     </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000054750CPF-PRO" decimals="4" unitRef="pure">-0.2367</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000054750CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000054750CPF-PRO">
       &#160;&#160;&#160;Year-to-Date Return
     </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000054750CPF-PRO" decimals="4" unitRef="pure">-0.1987</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000054750CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000054750CPF-PRO">
   Average Annual Returns
  </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000054750CPF-PRO">

    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.

  </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000054750CPF-PRO">
    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.
   </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000054750CPF-PRO">
     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).
   </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000054750CPF-PRO">
     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.
   </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000054750C000171931ReturnBeforeTaxes">
      Return Before Taxes
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054750C000171931ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2602</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054750C000171931ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1482</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054750C000171931ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000054750AAR_C000171931_RBT"
      unitRef="pure">0.1494</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054750C000171931AfterTaxesOnDistributions">
      Return After Taxes on Distributions
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054750C000171931AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2535</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054750C000171931AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1393</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054750C000171931AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000054750AAR_C000171931_ATD"
      unitRef="pure">0.1406</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054750C000171931AfterTaxesOnDistributionsAndSales">
      Return After Taxes on Distributions and Sale of Fund Shares
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054750C000171931AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1581</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054750C000171931AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1164</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054750C000171931AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000054750AAR_C000171931_ATDS"
      unitRef="pure">0.1178</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054750IndexIXZ69CPF-PRO">
      Fidelity Dividend Index for Rising Rates&#x2120;
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054750IndexIXZ69CPF-PRO"
      decimals="4"
      unitRef="pure">0.2642</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054750IndexIXZ69CPF-PRO"
      decimals="4"
      unitRef="pure">0.1519</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054750IndexIXZ69CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054750AAR_A_IndexIXZ69"
      unitRef="pure">0.1532</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054750IndexRS001CPF-PRO">
      Russell 1000&#xae; Index
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054750IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054750IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.1843</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054750IndexRS001CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054750AAR_A_IndexRS001"
      unitRef="pure">0.1824</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000054750CPF-PRO">2016-09-12</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000054749CPF-PRO">
   Fund Summary

    Fund:



     Fidelity&#xae; High Dividend ETF



  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000054749CPF-PRO">
   Investment Objective
  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000054749CPF-PRO">
   Fidelity&#xae; High Dividend ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity High Dividend Index&#x2120;.
  </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000054749CPF-PRO">
   Fee Table
  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000054749CPF-PRO">

    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 table or example below.


  </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000054749CPF-PRO">
   Shareholder fees
  </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000054749CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000054749CPF-PRO">
   Annual Operating Expenses
  </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054749C000171930"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054749C000171930"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054749C000171930"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054749C000171930"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000054749CPF-PRO">
   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:
  </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054749C000171930"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054749C000171930"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054749C000171930"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054749C000171930"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000054749CPF-PRO">
    Portfolio Turnover
   </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000054749CPF-PRO">
    The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was

      38

    % of the average value of its portfolio.
   </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000054749CPF-PRO" decimals="4" unitRef="pure">0.38</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000054749CPF-PRO">
    Principal Investment Strategies
   </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000054749CPF-PRO">

     Normally investing at least 80% of assets in securities included in the Fidelity High Dividend IndexSM and in depositary receipts representing securities included in the index. The Fidelity High Dividend IndexSM is designed to reflect the performance of stocks of large and mid-capitalization high-dividend-paying companies that are expected to continue to pay and grow their dividends.
     Lending securities to earn income for the fund.


   </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000054749CPF-PRO">
    Principal Investment Risks
   </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000054749CPF-PRO">

     Stock Market Volatility.


     Stock markets and, as a result, stock market indexes, 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.


     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.


     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.


     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.


     Correlation to Index.


     The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


     Passive Management Risk.


     The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


     The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


     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. In addition, trading may be halted, for example, due to market conditions.


     Mid Cap Investing.


     The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


     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.


     Dividend Paying Securities.


     Although the fund's underlying index uses a rules-based proprietary index methodology that is designed to identify stocks of dividend-paying companies that will continue to pay and grow their dividends, there is no guarantee that this methodology will be successful. The fund may underperform funds that invest more broadly. If securities held by the fund reduce or stop paying dividends, the fund's ability to generate dividend income may be affected.



      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
      .


      &#160;
      You could lose money by investing in the fund.



   </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000054749CPF-PRO">
      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
      .
     </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000054749CPF-PRO">
      &#160;
      You could lose money by investing in the fund.
     </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000054749CPF-PRO">
    Performance
   </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000054749CPF-PRO">

     The following information is intended to help you understand the risks of investing in the fund.



      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

      The indexes have 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.


   </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000054749CPF-PRO">
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
     </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000054749CPF-PRO">
       Past performance (before and after taxes) is not an indication of future performance.
     </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000054749CPF-PRO">
       www.fidelity.com
     </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000054749CPF-PRO">
    Year-by-Year Returns
   </rr:BarChartHeading>
    <rr:AnnualReturn2017
      contextRef="S000054749C000171930"
      decimals="INF"
      unitRef="pure">0.1381</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000054749C000171930"
      decimals="INF"
      unitRef="pure">-0.0093</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000054749C000171930"
      decimals="INF"
      unitRef="pure">0.2377</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000054749C000171930"
      decimals="INF"
      unitRef="pure">0.0285</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000054749C000171930"
      decimals="INF"
      unitRef="pure">0.2932</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000054749CPF-PRO">
        &#160;&#160;&#160;Highest Quarter Return
      </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000054749CPF-PRO" decimals="4" unitRef="pure">0.1886</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000054749CPF-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000054749CPF-PRO">
        &#160;&#160;&#160;Lowest Quarter Return
      </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000054749CPF-PRO" decimals="4" unitRef="pure">-0.2799</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000054749CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000054749CPF-PRO">
        &#160;&#160;&#160;Year-to-Date Return
      </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000054749CPF-PRO" decimals="4" unitRef="pure">-0.1569</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000054749CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000054749CPF-PRO">
    Average Annual Returns
   </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000054749CPF-PRO">

     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.

   </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000054749CPF-PRO">
     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.
    </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000054749CPF-PRO">
      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).
    </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000054749CPF-PRO">
      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.
    </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000054749C000171930ReturnBeforeTaxes">
       Return Before Taxes
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054749C000171930ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2932</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054749C000171930ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1317</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054749C000171930ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000054749AAR_C000171930_RBT"
      unitRef="pure">0.1328</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054749C000171930AfterTaxesOnDistributions">
       Return After Taxes on Distributions
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054749C000171930AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2840</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054749C000171930AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1201</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054749C000171930AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000054749AAR_C000171930_ATD"
      unitRef="pure">0.1211</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054749C000171930AfterTaxesOnDistributionsAndSales">
       Return After Taxes on Distributions and Sale of Fund Shares
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054749C000171930AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1787</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054749C000171930AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1013</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054749C000171930AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000054749AAR_C000171930_ATDS"
      unitRef="pure">0.1024</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054749IndexIXZ6KCPF-PRO">
       Fidelity High Dividend Index&#x2120;
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054749IndexIXZ6KCPF-PRO"
      decimals="4"
      unitRef="pure">0.2970</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054749IndexIXZ6KCPF-PRO"
      decimals="4"
      unitRef="pure">0.1349</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054749IndexIXZ6KCPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054749AAR_A_IndexIXZ6K"
      unitRef="pure">0.1363</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054749IndexRS001CPF-PRO">
       Russell 1000&#xae; Index
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054749IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054749IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.1843</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054749IndexRS001CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054749AAR_A_IndexRS001"
      unitRef="pure">0.1824</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000054749CPF-PRO">2016-09-12</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000054751CPF-PRO">
    Fund Summary

     Fund:



      Fidelity&#xae; Low Volatility Factor ETF



   </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000054751CPF-PRO">
    Investment Objective
   </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000054751CPF-PRO">
    Fidelity&#xae; Low Volatility Factor ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity U.S. Low Volatility Factor Index&#x2120;.
   </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000054751CPF-PRO">
    Fee Table
   </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000054751CPF-PRO">

     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 table or example below.


   </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000054751CPF-PRO">
    Shareholder fees
   </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000054751CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000054751CPF-PRO">
    Annual Operating Expenses
   </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054751C000171932"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054751C000171932"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054751C000171932"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054751C000171932"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000054751CPF-PRO">
    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:
   </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054751C000171932"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054751C000171932"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054751C000171932"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054751C000171932"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000054751CPF-PRO">
     Portfolio Turnover
    </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000054751CPF-PRO">
     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

      28

     % of the average value of its portfolio.
    </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000054751CPF-PRO" decimals="4" unitRef="pure">0.28</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000054751CPF-PRO">
     Principal Investment Strategies
    </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000054751CPF-PRO">

      Normally investing at least 80% of assets in securities included in the Fidelity U.S. Low Volatility Factor IndexSM, which is designed to reflect the performance of stocks of large and mid-capitalization U.S. companies with lower volatility than the broader market.
      Lending securities to earn income for the fund.


    </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000054751CPF-PRO">
     Principal Investment Risks
    </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000054751CPF-PRO">

      Low Volatility Strategy.


      Although the fund's underlying index uses a rules-based proprietary index methodology that is designed to identify stocks with lower volatility than the broader market, there is no guarantee that this methodology or the fund's low volatility strategy will be successful. There is a risk that the fund may experience more volatility than desired or than the market as a whole. In addition, the securities selected for the index may underperform higher volatility securities.


      Stock Market Volatility.


      Stock markets and, as a result, stock market indexes, 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.


      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.


      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.


      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.


      Correlation to Index.


      The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


      Passive Management Risk.


      The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


      The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


      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. In addition, trading may be halted, for example, due to market conditions.


      Mid Cap Investing.


      The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


      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.



       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
       .


       &#160;
       You could lose money by investing in the fund.



    </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000054751CPF-PRO">
       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
       .
      </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000054751CPF-PRO">
       &#160;
       You could lose money by investing in the fund.
      </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000054751CPF-PRO">
     Performance
    </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000054751CPF-PRO">

      The following information is intended to help you understand the risks of investing in the fund.



       The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

       The indexes have 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.


    </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000054751CPF-PRO">
       The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
      </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000054751CPF-PRO">
        Past performance (before and after taxes) is not an indication of future performance.
      </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000054751CPF-PRO">
        www.fidelity.com
      </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000054751CPF-PRO">
     Year-by-Year Returns
    </rr:BarChartHeading>
    <rr:AnnualReturn2017
      contextRef="S000054751C000171932"
      decimals="INF"
      unitRef="pure">0.1996</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000054751C000171932"
      decimals="INF"
      unitRef="pure">0.0054</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000054751C000171932"
      decimals="INF"
      unitRef="pure">0.3045</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000054751C000171932"
      decimals="INF"
      unitRef="pure">0.1243</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000054751C000171932"
      decimals="INF"
      unitRef="pure">0.2378</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000054751CPF-PRO">
         &#160;&#160;&#160;Highest Quarter Return
       </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000054751CPF-PRO" decimals="4" unitRef="pure">0.1768</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000054751CPF-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000054751CPF-PRO">
         &#160;&#160;&#160;Lowest Quarter Return
       </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000054751CPF-PRO" decimals="4" unitRef="pure">-0.1886</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000054751CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000054751CPF-PRO">
         &#160;&#160;&#160;Year-to-Date Return
       </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000054751CPF-PRO" decimals="4" unitRef="pure">-0.1883</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000054751CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000054751CPF-PRO">
     Average Annual Returns
    </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000054751CPF-PRO">

      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.

    </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000054751CPF-PRO">
      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.
     </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000054751CPF-PRO">
       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).
     </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000054751CPF-PRO">
       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.
     </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000054751C000171932ReturnBeforeTaxes">
        Return Before Taxes
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054751C000171932ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2378</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054751C000171932ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1697</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054751C000171932ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000054751AAR_C000171932_RBT"
      unitRef="pure">0.1651</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054751C000171932AfterTaxesOnDistributions">
        Return After Taxes on Distributions
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054751C000171932AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2341</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054751C000171932AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1652</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054751C000171932AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000054751AAR_C000171932_ATD"
      unitRef="pure">0.1606</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054751C000171932AfterTaxesOnDistributionsAndSales">
        Return After Taxes on Distributions and Sale of Fund Shares
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054751C000171932AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1429</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054751C000171932AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1363</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054751C000171932AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000054751AAR_C000171932_ATDS"
      unitRef="pure">0.1329</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054751IndexIXZ6BCPF-PRO">
        Fidelity U.S. Low Volatility Factor Index&#x2120;
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054751IndexIXZ6BCPF-PRO"
      decimals="4"
      unitRef="pure">0.2413</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054751IndexIXZ6BCPF-PRO"
      decimals="4"
      unitRef="pure">0.1726</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054751IndexIXZ6BCPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054751AAR_A_IndexIXZ6B"
      unitRef="pure">0.1681</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054751IndexRS001CPF-PRO">
        Russell 1000&#xae; Index
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054751IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054751IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.1843</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054751IndexRS001CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054751AAR_A_IndexRS001"
      unitRef="pure">0.1824</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000054751CPF-PRO">2016-09-12</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000054752CPF-PRO">
     Fund Summary

      Fund:



       Fidelity&#xae; Momentum Factor ETF



    </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000054752CPF-PRO">
     Investment Objective
    </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000054752CPF-PRO">
     Fidelity&#xae; Momentum Factor ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity U.S. Momentum Factor Index&#x2120;.
    </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000054752CPF-PRO">
     Fee Table
    </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000054752CPF-PRO">

      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 table or example below.


    </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000054752CPF-PRO">
     Shareholder fees
    </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000054752CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000054752CPF-PRO">
     Annual Operating Expenses
    </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054752C000171933"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054752C000171933"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054752C000171933"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054752C000171933"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000054752CPF-PRO">
     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:
    </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054752C000171933"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054752C000171933"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054752C000171933"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054752C000171933"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000054752CPF-PRO">
      Portfolio Turnover
     </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000054752CPF-PRO">
      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

        123

      % of the average value of its portfolio.
     </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000054752CPF-PRO" decimals="4" unitRef="pure">1.23</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000054752CPF-PRO">
      Principal Investment Strategies
     </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000054752CPF-PRO">

       Normally investing at least 80% of assets in securities included in the Fidelity U.S. Momentum Factor IndexSM, which is designed to reflect the performance of stocks of large and mid-capitalization U.S. companies that exhibit positive momentum signals.
       Lending securities to earn income for the fund.


     </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000054752CPF-PRO">
      Principal Investment Risks
     </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000054752CPF-PRO">

       Stock Market Volatility.


       Stock markets and, as a result, stock market indexes, 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.


       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.


       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.


       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.


       Correlation to Index.


       The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


       Passive Management Risk.


       The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


       The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


       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. In addition, trading may be halted, for example, due to market conditions.


       Momentum Securities Risk.


       Although the fund's underlying index uses a rules-based proprietary index methodology that is designed to identify stocks that exhibit positive momentum signals, there is no guarantee that this methodology will be successful. Stocks that previously exhibited high momentum characteristics may not experience positive momentum or may experience more volatility than the market as a whole.


       Mid Cap Investing.


       The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


       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.


       High Portfolio Turnover.


       High portfolio turnover (more than 100%) may result in increased transaction costs and potentially higher capital gains or losses. The effects of higher than normal portfolio turnover may adversely affect the fund's performance.



        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
        .


        &#160;
        You could lose money by investing in the fund.



     </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000054752CPF-PRO">
        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
        .
       </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000054752CPF-PRO">
        &#160;
        You could lose money by investing in the fund.
       </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000054752CPF-PRO">
      Performance
     </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000054752CPF-PRO">

       The following information is intended to help you understand the risks of investing in the fund.



        The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

        The indexes have 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.


     </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000054752CPF-PRO">
        The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
       </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000054752CPF-PRO">
         Past performance (before and after taxes) is not an indication of future performance.
       </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000054752CPF-PRO">
         www.fidelity.com
       </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000054752CPF-PRO">
      Year-by-Year Returns
     </rr:BarChartHeading>
    <rr:AnnualReturn2017
      contextRef="S000054752C000171933"
      decimals="INF"
      unitRef="pure">0.2372</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000054752C000171933"
      decimals="INF"
      unitRef="pure">-0.0372</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000054752C000171933"
      decimals="INF"
      unitRef="pure">0.2498</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000054752C000171933"
      decimals="INF"
      unitRef="pure">0.2162</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000054752C000171933"
      decimals="INF"
      unitRef="pure">0.2228</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000054752CPF-PRO">
          &#160;&#160;&#160;Highest Quarter Return
        </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000054752CPF-PRO" decimals="4" unitRef="pure">0.2115</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000054752CPF-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000054752CPF-PRO">
          &#160;&#160;&#160;Lowest Quarter Return
        </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000054752CPF-PRO" decimals="4" unitRef="pure">-0.1692</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000054752CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000054752CPF-PRO">
          &#160;&#160;&#160;Year-to-Date Return
        </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000054752CPF-PRO" decimals="4" unitRef="pure">-0.2274</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000054752CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000054752CPF-PRO">
      Average Annual Returns
     </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000054752CPF-PRO">

       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.

     </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000054752CPF-PRO">
       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.
      </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000054752CPF-PRO">
        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).
      </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000054752CPF-PRO">
        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.
      </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000054752C000171933ReturnBeforeTaxes">
         Return Before Taxes
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054752C000171933ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2228</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054752C000171933ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1723</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054752C000171933ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000054752AAR_C000171933_RBT"
      unitRef="pure">0.1642</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054752C000171933AfterTaxesOnDistributions">
         Return After Taxes on Distributions
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054752C000171933AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2209</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054752C000171933AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1694</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054752C000171933AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000054752AAR_C000171933_ATD"
      unitRef="pure">0.1612</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054752C000171933AfterTaxesOnDistributionsAndSales">
         Return After Taxes on Distributions and Sale of Fund Shares
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054752C000171933AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1330</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054752C000171933AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1390</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054752C000171933AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000054752AAR_C000171933_ATDS"
      unitRef="pure">0.1326</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054752IndexIXZ6DCPF-PRO">
         Fidelity U.S. Momentum Factor Index&#x2120;
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054752IndexIXZ6DCPF-PRO"
      decimals="4"
      unitRef="pure">0.2268</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054752IndexIXZ6DCPF-PRO"
      decimals="4"
      unitRef="pure">0.1760</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054752IndexIXZ6DCPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054752AAR_A_IndexIXZ6D"
      unitRef="pure">0.1679</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054752IndexRS001CPF-PRO">
         Russell 1000&#xae; Index
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054752IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054752IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.1843</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054752IndexRS001CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054752AAR_A_IndexRS001"
      unitRef="pure">0.1824</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000054752CPF-PRO">2016-09-12</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000054753CPF-PRO">
      Fund Summary

       Fund:



        Fidelity&#xae; Quality Factor ETF



     </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000054753CPF-PRO">
      Investment Objective
     </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000054753CPF-PRO">
      Fidelity&#xae; Quality Factor ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity U.S. Quality Factor Index&#x2120;.
     </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000054753CPF-PRO">
      Fee Table
     </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000054753CPF-PRO">

       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 table or example below.


     </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000054753CPF-PRO">
      Shareholder fees
     </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000054753CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000054753CPF-PRO">
      Annual Operating Expenses
     </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054753C000171934"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054753C000171934"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054753C000171934"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054753C000171934"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000054753CPF-PRO">
      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:
     </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054753C000171934"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054753C000171934"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054753C000171934"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054753C000171934"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000054753CPF-PRO">
       Portfolio Turnover
      </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000054753CPF-PRO">
       The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was

        38

       % of the average value of its portfolio.
      </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000054753CPF-PRO" decimals="4" unitRef="pure">0.38</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000054753CPF-PRO">
       Principal Investment Strategies
      </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000054753CPF-PRO">

        Normally investing at least 80% of assets in securities included in the Fidelity U.S. Quality Factor IndexSM, which is designed to reflect the performance of stocks of large and mid-capitalization U.S. companies with a higher quality profile than the broader market.
        Lending securities to earn income for the fund.


      </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000054753CPF-PRO">
       Principal Investment Risks
      </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000054753CPF-PRO">

        Quality Stocks.


        Although the fund's underlying index uses a rules-based proprietary index methodology that is designed to identify stocks with a higher quality profile than the broader market, there is no guarantee that this methodology will be successful or that the past performance of these stocks will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns.


        Stock Market Volatility.


        Stock markets and, as a result, stock market indexes, 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.


        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.


        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.


        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.


        Correlation to Index.


        The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


        Passive Management Risk.


        The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


        The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


        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. In addition, trading may be halted, for example, due to market conditions.


        Mid Cap Investing.


        The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


        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.



         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
         .


         &#160;
         You could lose money by investing in the fund.



      </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000054753CPF-PRO">
         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
         .
        </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000054753CPF-PRO">
         &#160;
         You could lose money by investing in the fund.
        </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000054753CPF-PRO">
       Performance
      </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000054753CPF-PRO">

        The following information is intended to help you understand the risks of investing in the fund.



         The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

         The indexes have 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.


      </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000054753CPF-PRO">
         The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
        </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000054753CPF-PRO">
          Past performance (before and after taxes) is not an indication of future performance.
        </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000054753CPF-PRO">
          www.fidelity.com
        </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000054753CPF-PRO">
       Year-by-Year Returns
      </rr:BarChartHeading>
    <rr:AnnualReturn2017
      contextRef="S000054753C000171934"
      decimals="INF"
      unitRef="pure">0.2281</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000054753C000171934"
      decimals="INF"
      unitRef="pure">-0.0373</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000054753C000171934"
      decimals="INF"
      unitRef="pure">0.2748</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000054753C000171934"
      decimals="INF"
      unitRef="pure">0.1618</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000054753C000171934"
      decimals="INF"
      unitRef="pure">0.3184</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000054753CPF-PRO">
           &#160;&#160;&#160;Highest Quarter Return
         </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000054753CPF-PRO" decimals="4" unitRef="pure">0.2031</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000054753CPF-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000054753CPF-PRO">
           &#160;&#160;&#160;Lowest Quarter Return
         </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000054753CPF-PRO" decimals="4" unitRef="pure">-0.1856</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000054753CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000054753CPF-PRO">
           &#160;&#160;&#160;Year-to-Date Return
         </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000054753CPF-PRO" decimals="4" unitRef="pure">-0.2510</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000054753CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000054753CPF-PRO">
       Average Annual Returns
      </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000054753CPF-PRO">

        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.

      </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000054753CPF-PRO">
        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.
       </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000054753CPF-PRO">
         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).
       </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000054753CPF-PRO">
         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.
       </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000054753C000171934ReturnBeforeTaxes">
          Return Before Taxes
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054753C000171934ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.3184</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054753C000171934ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1822</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054753C000171934ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000054753AAR_C000171934_RBT"
      unitRef="pure">0.1795</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054753C000171934AfterTaxesOnDistributions">
          Return After Taxes on Distributions
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054753C000171934AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.3143</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054753C000171934AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1776</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054753C000171934AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000054753AAR_C000171934_ATD"
      unitRef="pure">0.1750</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054753C000171934AfterTaxesOnDistributionsAndSales">
          Return After Taxes on Distributions and Sale of Fund Shares
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054753C000171934AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1908</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054753C000171934AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1468</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054753C000171934AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000054753AAR_S000054753C000171934AfterTaxesOnDistributionsAndSales_ATDS"
      unitRef="pure">0.1451</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054753IndexIXZ6HCPF-PRO">
          Fidelity U.S. Quality Factor Index&#x2120;
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054753IndexIXZ6HCPF-PRO"
      decimals="4"
      unitRef="pure">0.3224</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054753IndexIXZ6HCPF-PRO"
      decimals="4"
      unitRef="pure">0.1857</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054753IndexIXZ6HCPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054753AAR_A_IndexIXZ6H"
      unitRef="pure">0.1830</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054753IndexRS001CPF-PRO">
          Russell 1000&#xae; Index
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054753IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054753IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.1843</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054753IndexRS001CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054753AAR_A_IndexRS001"
      unitRef="pure">0.1824</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000054753CPF-PRO">2016-09-12</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000064786CPF-PRO">
       Fund Summary

        Fund:



         Fidelity&#xae; Small-Mid Multifactor ETF



      </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000064786CPF-PRO">
       Investment Objective
      </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000064786CPF-PRO">
       Fidelity&#xae; Small-Mid Multifactor ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity Small-Mid Multifactor Index&#x2120;.
      </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000064786CPF-PRO">
       Fee Table
      </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000064786CPF-PRO">

        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 table or example below.


      </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000064786CPF-PRO">
       Shareholder fees
      </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000064786CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000064786CPF-PRO">
       Annual Operating Expenses
      </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000064786C000209803"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000064786C000209803"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000064786C000209803"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000064786C000209803"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000064786CPF-PRO">
       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:
      </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000064786C000209803"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000064786C000209803"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000064786C000209803"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000064786C000209803"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000064786CPF-PRO">
        Portfolio Turnover
       </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000064786CPF-PRO">
        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

          60

        % of the average value of its portfolio.
       </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000064786CPF-PRO" decimals="4" unitRef="pure">0.60</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000064786CPF-PRO">
        Principal Investment Strategies
       </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000064786CPF-PRO">

         Normally investing at least 80% of assets in securities included in the Fidelity Small-Mid Multifactor IndexSM, which is designed to reflect the performance of stocks of small- and mid-capitalization U.S. companies with attractive valuations, high quality profiles, positive momentum signals, and lower volatility than the broader market, as represented by the Fidelity U.S. Extended Investable Market IndexSM.
         Lending securities to earn income for the fund.


       </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000064786CPF-PRO">
        Principal Investment Risks
       </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000064786CPF-PRO">

         Stock Market Volatility.


         Stock markets and, as a result, stock market indexes, 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.


         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.


         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.


         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.


         Correlation to Index.


         The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


         Passive Management Risk.


         The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


         The fund will be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry.


         Factor-Based Strategy Risk.


         Although the fund's underlying index uses a rules-based proprietary index methodology that seeks to identify certain factors, there is no guarantee that this methodology will be successful.


         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. In addition, trading may be halted, for example, due to market conditions.


         Mid Cap Investing.


         The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


         Small Cap Investing.


         The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


         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.



          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
          .


          &#160;
          You could lose money by investing in the fund.



       </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000064786CPF-PRO">
          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
          .
         </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000064786CPF-PRO">
          &#160;
          You could lose money by investing in the fund.
         </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000064786CPF-PRO">
        Performance
       </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000064786CPF-PRO">

         The following information is intended to help you understand the risks of investing in the fund.



          The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

          The indexes have 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.


       </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000064786CPF-PRO">
          The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
         </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000064786CPF-PRO">
           Past performance (before and after taxes) is not an indication of future performance.
         </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000064786CPF-PRO">
           www.fidelity.com
         </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000064786CPF-PRO">
        Year-by-Year Returns
       </rr:BarChartHeading>
    <rr:AnnualReturn2020
      contextRef="S000064786C000209803"
      decimals="INF"
      unitRef="pure">0.0890</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000064786C000209803"
      decimals="INF"
      unitRef="pure">0.2605</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000064786CPF-PRO">
            &#160;&#160;&#160;Highest Quarter Return
          </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000064786CPF-PRO" decimals="4" unitRef="pure">0.2165</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000064786CPF-PRO">2020-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000064786CPF-PRO">
            &#160;&#160;&#160;Lowest Quarter Return
          </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000064786CPF-PRO" decimals="4" unitRef="pure">-0.2938</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000064786CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000064786CPF-PRO">
            &#160;&#160;&#160;Year-to-Date Return
          </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000064786CPF-PRO" decimals="4" unitRef="pure">-0.1869</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000064786CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000064786CPF-PRO">
        Average Annual Returns
       </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000064786CPF-PRO">

         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.

       </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000064786CPF-PRO">
         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.
        </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000064786CPF-PRO">
          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).
        </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000064786CPF-PRO">
          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.
        </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000064786C000209803ReturnBeforeTaxes">
           Return Before Taxes
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000064786C000209803ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2605</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000064786C000209803ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000064786AAR_C000209803_RBT"
      unitRef="pure">0.1541</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000064786C000209803AfterTaxesOnDistributions">
           Return After Taxes on Distributions
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000064786C000209803AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2567</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000064786C000209803AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000064786AAR_C000209803_ATD"
      unitRef="pure">0.1496</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000064786C000209803AfterTaxesOnDistributionsAndSales">
           Return After Taxes on Distributions and Sale of Fund Shares
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000064786C000209803AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1566</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000064786C000209803AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000064786AAR_C000209803_ATDS"
      unitRef="pure">0.1196</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000064786IndexIXYW4CPF-PRO">
           Fidelity Small-Mid Multifactor Index&#x2120;
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000064786IndexIXYW4CPF-PRO"
      decimals="4"
      unitRef="pure">0.2649</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000064786IndexIXYW4CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000064786AAR_A_IndexIXYW4"
      unitRef="pure">0.1577</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000064786IndexWA008CPF-PRO">
           Dow Jones U.S. Completion Total Stock Market Index&#x2120;
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000064786IndexWA008CPF-PRO"
      decimals="4"
      unitRef="pure">0.1235</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000064786IndexWA008CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000064786AAR_A_IndexWA008"
      unitRef="pure">0.1854</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000064786CPF-PRO">2019-02-26</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000066804CPF-PRO">
        Fund Summary

         Fund:



          Fidelity&#xae; Stocks for Inflation ETF



       </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000066804CPF-PRO">
        Investment Objective
       </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000066804CPF-PRO">
        Fidelity&#xae; Stocks for Inflation ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity Stocks for Inflation Factor Index&#x2120;.
       </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000066804CPF-PRO">
        Fee Table
       </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000066804CPF-PRO">

         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 table or example below.


       </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000066804CPF-PRO">
        Shareholder fees
       </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000066804CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000066804CPF-PRO">
        Annual Operating Expenses
       </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000066804C000215140"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000066804C000215140"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000066804C000215140"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000066804C000215140"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000066804CPF-PRO">
        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:
       </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000066804C000215140"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000066804C000215140"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000066804C000215140"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000066804C000215140"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000066804CPF-PRO">
         Portfolio Turnover
        </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000066804CPF-PRO">
         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

           76

         % of the average value of its portfolio.
        </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000066804CPF-PRO" decimals="4" unitRef="pure">0.76</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000066804CPF-PRO">
         Principal Investment Strategies
        </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000066804CPF-PRO">

          Normally investing at least 80% of assets in securities included in the Fidelity Stocks for Inflation Factor IndexSM, which is designed to reflect the performance of stocks of large and mid-capitalization U.S. companies with attractive valuations, high quality profiles and positive momentum signals, emphasizing industries that tend to outperform in inflationary environments.
          Lending securities to earn income for the fund.


        </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000066804CPF-PRO">
         Principal Investment Risks
        </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000066804CPF-PRO">

          Stock Market Volatility.


          Stock markets and, as a result, stock market indexes, 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.


          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.


          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.


          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.


          Correlation to Index.


          The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


          Passive Management Risk.


          The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


          The fund will be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry.


          Factor-Based Strategy Risk.


          Although the fund's underlying index uses a rules-based proprietary index methodology that seeks to identify certain factors, there is no guarantee that this methodology will be successful.


          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. In addition, trading may be halted, for example, due to market conditions.


          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.


          Stocks for Inflation.


          Although the fund's underlying index uses a rules-based proprietary index methodology that is designed to identify stocks with attractive valuations, high quality profiles and positive momentum signals, there is no guarantee that this methodology will be successful. The fund may underperform funds that invest more broadly. Though stocks should provide a hedge against inflation, the value of the stocks in which the fund invests may decrease in the future. As inflation increases, purchasing power is eroded and the future value of the fund's assets and distributions may decline.



           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
           .


           &#160;
           You could lose money by investing in the fund.



        </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000066804CPF-PRO">
           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
           .
          </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000066804CPF-PRO">
           &#160;
           You could lose money by investing in the fund.
          </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000066804CPF-PRO">
         Performance
        </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000066804CPF-PRO">

          The following information is intended to help you understand the risks of investing in the fund.



           The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

           The indexes have 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.


        </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000066804CPF-PRO">
           The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
          </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000066804CPF-PRO">
            Past performance (before and after taxes) is not an indication of future performance.
          </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000066804CPF-PRO">
            www.fidelity.com
          </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000066804CPF-PRO">
         Year-by-Year Returns
        </rr:BarChartHeading>
    <rr:AnnualReturn2020
      contextRef="S000066804C000215140"
      decimals="INF"
      unitRef="pure">0.0212</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000066804C000215140"
      decimals="INF"
      unitRef="pure">0.3440</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000066804CPF-PRO">
             &#160;&#160;&#160;Highest Quarter Return
           </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000066804CPF-PRO" decimals="4" unitRef="pure">0.1945</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000066804CPF-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000066804CPF-PRO">
             &#160;&#160;&#160;Lowest Quarter Return
           </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000066804CPF-PRO" decimals="4" unitRef="pure">-0.2448</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000066804CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000066804CPF-PRO">
             &#160;&#160;&#160;Year-to-Date Return
           </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000066804CPF-PRO" decimals="4" unitRef="pure">-0.1587</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000066804CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000066804CPF-PRO">
         Average Annual Returns
        </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000066804CPF-PRO">

          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.

        </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000066804CPF-PRO">
          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.
         </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000066804CPF-PRO">
           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).
         </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000066804CPF-PRO">
           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.
         </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000066804C000215140ReturnBeforeTaxes">
            Return Before Taxes
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066804C000215140ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.3440</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066804C000215140ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000066804AAR_C000215140_RBT"
      unitRef="pure">0.1838</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000066804C000215140AfterTaxesOnDistributions">
            Return After Taxes on Distributions
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066804C000215140AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.3397</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066804C000215140AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000066804AAR_C000215140_ATD"
      unitRef="pure">0.1749</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000066804C000215140AfterTaxesOnDistributionsAndSales">
            Return After Taxes on Distributions and Sale of Fund Shares
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066804C000215140AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.2060</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066804C000215140AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000066804AAR_C000215140_ATDS"
      unitRef="pure">0.1399</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000066804IndexIXXSECPF-PRO">
            Fidelity Stocks for Inflation Factor Index&#x2120;
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066804IndexIXXSECPF-PRO"
      decimals="4"
      unitRef="pure">0.3485</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066804IndexIXXSECPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000066804AAR_A_IndexIXXSE"
      unitRef="pure">0.1882</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000066804IndexRS001CPF-PRO">
            Russell 1000&#xae; Index
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066804IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066804IndexRS001CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000066804AAR_A_IndexRS001"
      unitRef="pure">0.2483</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000066804CPF-PRO">2019-11-05</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000068350USM-PRO">
         Fund Summary

          Fund:



           Fidelity&#xae; U.S. Multifactor ETF



        </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000068350USM-PRO">
         Investment Objective
        </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000068350USM-PRO">
         Fidelity&#xae; U.S. Multifactor ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity U.S. Multifactor Index&#x2120;.
        </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000068350USM-PRO">
         Fee Table
        </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000068350USM-PRO">

          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 table or example below.


        </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000068350USM-PRO">
         Shareholder fees
        </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000068350USM-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000068350USM-PRO">
         Annual Operating Expenses
        </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000068350C000218700"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000068350C000218700"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000068350C000218700"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000068350C000218700"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000068350USM-PRO">
         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:
        </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000068350C000218700"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000068350C000218700"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000068350C000218700"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000068350C000218700"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000068350USM-PRO">
          Portfolio Turnover
         </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000068350USM-PRO">
          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

            46

          % of the average value of its portfolio.
         </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000068350USM-PRO" decimals="4" unitRef="pure">0.46</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000068350USM-PRO">
          Principal Investment Strategies
         </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000068350USM-PRO">

            Normally investing at least 80% of assets in securities included in the Fidelity U.S. Multifactor Index&#x2120;. The Fidelity U.S. Multifactor Index&#x2120; is designed to reflect the performance of stocks of large and mid-capitalization U.S. companies with attractive valuations, high quality profiles, positive momentum signals, and lower volatility than the broader market. &#160;
           Lending securities to earn income for the fund.


         </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000068350USM-PRO">
          Principal Investment Risks
         </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000068350USM-PRO">

           Stock Market Volatility.


           Stock markets and, as a result, stock market indexes, 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.


           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.


           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.


           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.


           Correlation to Index.


           The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


           Passive Management Risk.


           The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


           The fund will be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry.


           Factor-Based Strategy Risk.


           Although the fund's underlying index uses a rules-based proprietary index methodology that seeks to identify certain factors, there is no guarantee that this methodology will be successful.


           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. In addition, trading may be halted, for example, due to market conditions.


           Mid Cap Investing.


           The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


           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.



            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
            .


            &#160;
            You could lose money by investing in the fund.



         </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000068350USM-PRO">
            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
            .
           </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000068350USM-PRO">
            &#160;
            You could lose money by investing in the fund.
           </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000068350USM-PRO">
          Performance
         </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000068350USM-PRO">

           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 indexes have 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) &#160;is not an indication of future performance



           Visit

             www.fidelity.com

           for more recent performance information.


         </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000068350USM-PRO">
            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.
           </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000068350USM-PRO">
            Past performance(before and after taxes) &#160;is not an indication of future performance
           </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000068350USM-PRO">
             www.fidelity.com
           </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000068350USM-PRO">
          Year-by-Year Returns
         </rr:BarChartHeading>
    <rr:AnnualReturn2021
      contextRef="S000068350C000218700"
      decimals="INF"
      unitRef="pure">0.2939</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000068350USM-PRO">
              &#160;&#160;&#160;Highest Quarter Return
            </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000068350USM-PRO" decimals="4" unitRef="pure">0.1058</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000068350USM-PRO">2021-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000068350USM-PRO">
              &#160;&#160;&#160;Lowest Quarter Return
            </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000068350USM-PRO" decimals="4" unitRef="pure">0.0106</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000068350USM-PRO">2021-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000068350USM-PRO">
              &#160;&#160;&#160;Year-to-Date Return
            </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000068350USM-PRO" decimals="4" unitRef="pure">-0.1923</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000068350USM-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000068350USM-PRO">
          Average Annual Returns
         </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000068350USM-PRO">

           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.

         </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000068350USM-PRO">
           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.
          </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000068350USM-PRO">
            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).
          </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000068350USM-PRO">
            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.
          </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000068350C000218700ReturnBeforeTaxes">
             Return Before Taxes
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068350C000218700ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2939</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068350C000218700ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000068350AAR_C000218700_RBT"
      unitRef="pure">0.2953</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068350C000218700AfterTaxesOnDistributions">
             Return After Taxes on Distributions
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068350C000218700AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2893</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068350C000218700AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000068350AAR_C000218700_ATD"
      unitRef="pure">0.2866</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068350C000218700AfterTaxesOnDistributionsAndSales">
             Return After Taxes on Distributions and Sale of Fund Shares
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068350C000218700AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1767</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068350C000218700AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000068350AAR_C000218700_ATDS"
      unitRef="pure">0.2243</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068350IndexIXXRFUSM-PRO">
             Fidelity U.S. Multifactor Index&#x2120;
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068350IndexIXXRFUSM-PRO"
      decimals="4"
      unitRef="pure">0.2980</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068350IndexIXXRFUSM-PRO"
      decimals="4"
      id="footnoteCPF-PROS000068350AAR_A_IndexIXXRF"
      unitRef="pure">0.2996</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068350IndexRS001USM-PRO">
             Russell 1000&#xae; Index
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068350IndexRS001USM-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068350IndexRS001USM-PRO"
      decimals="4"
      id="footnoteCPF-PROS000068350AAR_A_IndexRS001"
      unitRef="pure">0.3147</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000068350USM-PRO">2020-09-15</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000054754CPF-PRO">
          Fund Summary

           Fund:



            Fidelity&#xae; Value Factor ETF



         </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000054754CPF-PRO">
          Investment Objective
         </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000054754CPF-PRO">
          Fidelity&#xae; Value Factor ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the Fidelity U.S. Value Factor Index&#x2120;.
         </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000054754CPF-PRO">
          Fee Table
         </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000054754CPF-PRO">

           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 table or example below.


         </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000054754CPF-PRO">
          Shareholder fees
         </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000054754CPF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000054754CPF-PRO">
          Annual Operating Expenses
         </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054754C000171935"
      decimals="6"
      unitRef="pure">0.0029</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054754C000171935"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054754C000171935"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054754C000171935"
      decimals="6"
      unitRef="pure">0.0029</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000054754CPF-PRO">
          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:
         </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054754C000171935"
      decimals="0"
      unitRef="usd">30</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054754C000171935"
      decimals="0"
      unitRef="usd">93</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054754C000171935"
      decimals="0"
      unitRef="usd">163</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054754C000171935"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000054754CPF-PRO">
           Portfolio Turnover
          </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000054754CPF-PRO">
           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

             46

           % of the average value of its portfolio.
          </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000054754CPF-PRO" decimals="4" unitRef="pure">0.46</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000054754CPF-PRO">
           Principal Investment Strategies
          </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000054754CPF-PRO">

            Normally investing at least 80% of assets in securities included in the Fidelity U.S. Value Factor IndexSM, which is designed to reflect the performance of stocks of large and mid-capitalization U.S. companies that have attractive valuations.
            Lending securities to earn income for the fund.


          </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000054754CPF-PRO">
           Principal Investment Risks
          </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000054754CPF-PRO">

            Stock Market Volatility.


            Stock markets and, as a result, stock market indexes, 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.


            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.


            "Value" Investing.


            Although the fund's underlying index uses a rules-based proprietary index methodology that is designed to identify stocks with attractive valuations, there is no guarantee that this methodology will be successful or that these stocks will continue to be good "values." "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time
            .


            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.


            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.


            Correlation to Index.


            The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


            Passive Management Risk.


            The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


            The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


            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. In addition, trading may be halted, for example, due to market conditions.


            Mid Cap Investing.


            The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


            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.



             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
             .


             &#160;
             You could lose money by investing in the fund.



          </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000054754CPF-PRO">
             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
             .
            </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000054754CPF-PRO">
             &#160;
             You could lose money by investing in the fund.
            </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000054754CPF-PRO">
           Performance
          </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000054754CPF-PRO">

            The following information is intended to help you understand the risks of investing in the fund.



             The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

             The indexes have 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.


          </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000054754CPF-PRO">
             The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
            </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000054754CPF-PRO">
              Past performance (before and after taxes) is not an indication of future performance.
            </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000054754CPF-PRO">
              www.fidelity.com
            </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000054754CPF-PRO">
           Year-by-Year Returns
          </rr:BarChartHeading>
    <rr:AnnualReturn2017
      contextRef="S000054754C000171935"
      decimals="INF"
      unitRef="pure">0.2190</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000054754C000171935"
      decimals="INF"
      unitRef="pure">-0.0708</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000054754C000171935"
      decimals="INF"
      unitRef="pure">0.2954</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000054754C000171935"
      decimals="INF"
      unitRef="pure">0.0887</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000054754C000171935"
      decimals="INF"
      unitRef="pure">0.3065</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000054754CPF-PRO">
               &#160;&#160;&#160;Highest Quarter Return
             </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000054754CPF-PRO" decimals="4" unitRef="pure">0.1976</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000054754CPF-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000054754CPF-PRO">
               &#160;&#160;&#160;Lowest Quarter Return
             </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000054754CPF-PRO" decimals="4" unitRef="pure">-0.2525</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000054754CPF-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000054754CPF-PRO">
               &#160;&#160;&#160;Year-to-Date Return
             </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000054754CPF-PRO" decimals="4" unitRef="pure">-0.2223</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000054754CPF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000054754CPF-PRO">
           Average Annual Returns
          </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000054754CPF-PRO">

            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.

          </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000054754CPF-PRO">
            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.
           </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000054754CPF-PRO">
             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).
           </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000054754CPF-PRO">
             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.
           </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000054754C000171935ReturnBeforeTaxes">
              Return Before Taxes
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054754C000171935ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.3065</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054754C000171935ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1585</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054754C000171935ReturnBeforeTaxes"
      decimals="4"
      id="footnoteCPF-PROS000054754AAR_C000171935_RBT"
      unitRef="pure">0.1662</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054754C000171935AfterTaxesOnDistributions">
              Return After Taxes on Distributions
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054754C000171935AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.3017</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054754C000171935AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1535</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054754C000171935AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteCPF-PROS000054754AAR_C000171935_ATD"
      unitRef="pure">0.1612</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054754C000171935AfterTaxesOnDistributionsAndSales">
              Return After Taxes on Distributions and Sale of Fund Shares
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054754C000171935AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1843</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054754C000171935AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1267</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054754C000171935AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteCPF-PROS000054754AAR_C000171935_ATDS"
      unitRef="pure">0.1337</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054754IndexIXZ6FCPF-PRO">
              Fidelity U.S. Value Factor Index&#x2120;
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054754IndexIXZ6FCPF-PRO"
      decimals="4"
      unitRef="pure">0.3104</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054754IndexIXZ6FCPF-PRO"
      decimals="4"
      unitRef="pure">0.1620</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054754IndexIXZ6FCPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054754AAR_A_IndexIXZ6F"
      unitRef="pure">0.1697</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000054754IndexRS001CPF-PRO">
              Russell 1000&#xae; Index
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054754IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.2645</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054754IndexRS001CPF-PRO"
      decimals="4"
      unitRef="pure">0.1843</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054754IndexRS001CPF-PRO"
      decimals="4"
      id="footnoteCPF-PROS000054754AAR_A_IndexRS001"
      unitRef="pure">0.1824</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000054754CPF-PRO">2016-09-12</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042579EXT-PRO">
  Fund Summary

   Fund:



    Fidelity&#xae; MSCI Communication Services Index ETF



 </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042579EXT-PRO">
  Investment Objective
 </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042579EXT-PRO">
  Fidelity&#xae; MSCI Communication Services Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Communication Services 25/50 Index.
 </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042579EXT-PRO">
  Fee Table
 </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042579EXT-PRO">

   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 table or example below.


 </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042579EXT-PRO">
  Shareholder fees
 </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042579EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042579EXT-PRO">
  Annual Operating Expenses
 </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042579C000131671"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042579C000131671"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042579C000131671"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042579C000131671"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042579EXT-PRO">
  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:
 </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042579C000131671"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042579C000131671"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042579C000131671"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042579C000131671"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042579EXT-PRO">
   Portfolio Turnover
  </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042579EXT-PRO">
   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

     21

   % of the average value of its portfolio.
  </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042579EXT-PRO" decimals="4" unitRef="pure">0.21</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042579EXT-PRO">
   Principal Investment Strategies
  </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042579EXT-PRO">



      Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Communication Services 25/50 Index, which represents the performance of the communication services sector in the U.S. equity market.

    Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Communication Services 25/50 Index.


  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042579EXT-PRO">
      Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Communication Services 25/50 Index, which represents the performance of the communication services sector in the U.S. equity market.
     </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042579EXT-PRO">
   Principal Investment Risks
  </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042579EXT-PRO">

    Stock Market Volatility.


    Stock markets and, as a result, stock market indexes, 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.


    Communication Services Industry Concentration.


    The communication services industries can be significantly affected by government regulation, intense competition, technology changes, general economic conditions, consumer and business confidence and spending, and changes in consumer and business preferences.


    Issuer-Specific Changes.


    The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


    The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


    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.


    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.


    Correlation to Index.


    The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


    Passive Management Risk.


    The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


    The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


    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. In addition, trading may be halted, for example, due to market conditions.



     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.




     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
     .


     &#160;
     You could lose money by investing in the fund.



  </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042579EXT-PRO">
     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.
    </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042579EXT-PRO">
     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
     .
    </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042579EXT-PRO">
     &#160;
     You could lose money by investing in the fund.
    </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042579EXT-PRO">
   Performance
  </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042579EXT-PRO">

    The following information is intended to help you understand the risks of investing in the fund.



     The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

     The indexes have 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.



    Prior to December 1, 2018, the fund's underlying index was named MSCI USA IMI Telecommunication Services 25/50 Index and had a different composition. Returns shown for the periods prior to December 1, 2018 are attributable to the index's prior composition.


    Visit

      www.fidelity.com

    for more recent performance information.


  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042579EXT-PRO">
     The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
    </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042579EXT-PRO">
      Past performance (before and after taxes) is not an indication of future performance.
    </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042579EXT-PRO">
      www.fidelity.com
    </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042579EXT-PRO">
   Year-by-Year Returns
  </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">0.0638</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">0.0326</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">0.2315</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">0.0359</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">-0.0545</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">0.2706</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">0.2825</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042579C000131671"
      decimals="INF"
      unitRef="pure">0.1384</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042579EXT-PRO">
       &#160;&#160;&#160;Highest Quarter Return
     </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042579EXT-PRO" decimals="4" unitRef="pure">0.2198</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042579EXT-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042579EXT-PRO">
       &#160;&#160;&#160;Lowest Quarter Return
     </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042579EXT-PRO" decimals="4" unitRef="pure">-0.1866</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042579EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042579EXT-PRO">
       &#160;&#160;&#160;Year-to-Date Return
     </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042579EXT-PRO" decimals="4" unitRef="pure">-0.3876</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042579EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042579EXT-PRO">
   Average Annual Returns
  </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042579EXT-PRO">

    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.

  </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042579EXT-PRO">
    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.
   </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042579EXT-PRO">
     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).
   </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042579EXT-PRO">
     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.
   </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042579C000131671ReturnBeforeTaxes">
      Return Before Taxes
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042579C000131671ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1384</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042579C000131671ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1269</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042579C000131671ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042579AAR_C000131671_RBT"
      unitRef="pure">0.1186</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042579C000131671AfterTaxesOnDistributions">
      Return After Taxes on Distributions
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042579C000131671AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1360</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042579C000131671AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1182</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042579C000131671AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042579AAR_C000131671_ATD"
      unitRef="pure">0.1107</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042579C000131671AfterTaxesOnDistributionsAndSales">
      Return After Taxes on Distributions and Sale of Fund Shares
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042579C000131671AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.0837</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042579C000131671AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.0976</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042579C000131671AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042579AAR_C000131671_ATDS"
      unitRef="pure">0.0939</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042579IndexMC024EXT-PRO">
      MSCI USA IMI Communication Services 25/50 Index
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042579IndexMC024EXT-PRO"
      decimals="4"
      unitRef="pure">0.1393</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042579IndexMC024EXT-PRO"
      decimals="4"
      unitRef="pure">0.1281</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042579IndexMC024EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042579AAR_A_IndexMC024"
      unitRef="pure">0.1194</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042579IndexSP001EXT-PRO">
      S&amp;P 500&#xae; Index
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042579IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042579IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042579IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042579AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042579EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042570EXT-PRO">
   Fund Summary

    Fund:



     Fidelity&#xae; MSCI Consumer Discretionary Index ETF



  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042570EXT-PRO">
   Investment Objective
  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042570EXT-PRO">
   Fidelity&#xae; MSCI Consumer Discretionary Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Consumer Discretionary 25/50 Index.
  </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042570EXT-PRO">
   Fee Table
  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042570EXT-PRO">

    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 table or example below.


  </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042570EXT-PRO">
   Shareholder fees
  </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042570EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042570EXT-PRO">
   Annual Operating Expenses
  </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042570C000131662"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042570C000131662"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042570C000131662"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042570C000131662"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042570EXT-PRO">
   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:
  </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042570C000131662"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042570C000131662"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042570C000131662"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042570C000131662"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042570EXT-PRO">
    Portfolio Turnover
   </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042570EXT-PRO">
    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 &#160;

     8

    % of the average value of its portfolio.
   </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042570EXT-PRO" decimals="4" unitRef="pure">0.08</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042570EXT-PRO">
    Principal Investment Strategies
   </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042570EXT-PRO">



       Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Consumer Discretionary 25/50 Index, which represents the performance of the consumer discretionary sector in the U.S. equity market.

     Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Consumer Discretionary 25/50 Index.


   </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042570EXT-PRO">
       Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Consumer Discretionary 25/50 Index, which represents the performance of the consumer discretionary sector in the U.S. equity market.
      </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042570EXT-PRO">
    Principal Investment Risks
   </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042570EXT-PRO">

     Stock Market Volatility.


     Stock markets and, as a result, stock market indexes, 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.


     Consumer Discretionary Industry Concentration.


     The consumer discretionary industries can be significantly affected by the performance of the overall economy, interest rates, competition, consumer confidence and spending, and changes in demographics and consumer tastes.


     Issuer-Specific Changes.


     The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


     The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


     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.


     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.


     Correlation to Index.


     The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


     Passive Management Risk.


     The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


     The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


     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. In addition, trading may be halted, for example, due to market conditions.



      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.




      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
      .


      &#160;
      You could lose money by investing in the fund.



   </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042570EXT-PRO">
      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.
     </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042570EXT-PRO">
      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
      .
     </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042570EXT-PRO">
      &#160;
      You could lose money by investing in the fund.
     </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042570EXT-PRO">
    Performance
   </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042570EXT-PRO">

     The following information is intended to help you understand the risks of investing in the fund.



      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

      The indexes have 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.



     Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


     Visit

       www.fidelity.com

     for more recent performance information.


   </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042570EXT-PRO">
      The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
     </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042570EXT-PRO">
       Past performance (before and after taxes) is not an indication of future performance.
     </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042570EXT-PRO">
       www.fidelity.com
     </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042570EXT-PRO">
    Year-by-Year Returns
   </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">0.0932</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">0.0639</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">0.0664</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">0.2278</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">-0.0074</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">0.2753</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">0.4933</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042570C000131662"
      decimals="INF"
      unitRef="pure">0.2434</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042570EXT-PRO">
        &#160;&#160;&#160;Highest Quarter Return
      </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042570EXT-PRO" decimals="4" unitRef="pure">0.3833</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042570EXT-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042570EXT-PRO">
        &#160;&#160;&#160;Lowest Quarter Return
      </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042570EXT-PRO" decimals="4" unitRef="pure">-0.2157</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042570EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042570EXT-PRO">
        &#160;&#160;&#160;Year-to-Date Return
      </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042570EXT-PRO" decimals="4" unitRef="pure">-0.3069</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042570EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042570EXT-PRO">
    Average Annual Returns
   </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042570EXT-PRO">

     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.

   </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042570EXT-PRO">
     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.
    </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042570EXT-PRO">
      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).
    </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042570EXT-PRO">
      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.
    </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042570C000131662ReturnBeforeTaxes">
       Return Before Taxes
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042570C000131662ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2434</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042570C000131662ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2361</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042570C000131662ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042570AAR_C000131662_RBT"
      unitRef="pure">0.1786</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042570C000131662AfterTaxesOnDistributions">
       Return After Taxes on Distributions
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042570C000131662AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2416</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042570C000131662AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2332</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042570C000131662AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042570AAR_C000131662_ATD"
      unitRef="pure">0.1754</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042570C000131662AfterTaxesOnDistributionsAndSales">
       Return After Taxes on Distributions and Sale of Fund Shares
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042570C000131662AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1452</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042570C000131662AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1938</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042570C000131662AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042570AAR_C000131662_ATDS"
      unitRef="pure">0.1494</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042570IndexIXWMWEXT-PRO">
       Fidelity MSCI Consumer Discretionary Index ETF Capped Linked Index&#x2120;
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042570IndexIXWMWEXT-PRO"
      decimals="4"
      unitRef="pure">0.2446</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042570IndexIXWMWEXT-PRO"
      decimals="4"
      unitRef="pure">0.2355</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042570IndexIXWMWEXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042570AAR_A_IndexIXWMW"
      unitRef="pure">0.1789</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042570IndexSP001EXT-PRO">
       S&amp;P 500&#xae; Index
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042570IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042570IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042570IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042570AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042570EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042572EXT-PRO">
    Fund Summary

     Fund:



      Fidelity&#xae; MSCI Consumer Staples Index ETF



   </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042572EXT-PRO">
    Investment Objective
   </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042572EXT-PRO">
    Fidelity&#xae; MSCI Consumer Staples Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Consumer Staples 25/50 Index.
   </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042572EXT-PRO">
    Fee Table
   </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042572EXT-PRO">

     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 table or example below.


   </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042572EXT-PRO">
    Shareholder fees
   </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042572EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042572EXT-PRO">
    Annual Operating Expenses
   </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042572C000131664"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042572C000131664"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042572C000131664"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042572C000131664"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042572EXT-PRO">
    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:
   </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042572C000131664"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042572C000131664"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042572C000131664"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042572C000131664"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042572EXT-PRO">
     Portfolio Turnover
    </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042572EXT-PRO">
     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

       8

     % of the average value of its portfolio.
    </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042572EXT-PRO" decimals="4" unitRef="pure">0.08</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042572EXT-PRO">
     Principal Investment Strategies
    </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042572EXT-PRO">



        Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Consumer Staples 25/50 Index, which represents the performance of the consumer staples sector in the U.S. equity market.

      Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Consumer Staples 25/50 Index.


    </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042572EXT-PRO">
        Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Consumer Staples 25/50 Index, which represents the performance of the consumer staples sector in the U.S. equity market.
       </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042572EXT-PRO">
     Principal Investment Risks
    </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042572EXT-PRO">

      Stock Market Volatility.


      Stock markets and, as a result, stock market indexes, 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.


      Consumer Staples Industry Concentration.


      The consumer staples industries can be significantly affected by demographics and product trends, competitive pricing, food fads, marketing campaigns, environmental factors, government regulation, the performance of the overall economy, interest rates, consumer confidence, and the cost of commodities.


      Issuer-Specific Changes.


      The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


      The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


      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.


      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.


      Correlation to Index.


      The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


      Passive Management Risk.


      The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


      The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


      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. In addition, trading may be halted, for example, due to market conditions.



       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.




       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
       .


       &#160;
       You could lose money by investing in the fund.



    </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042572EXT-PRO">
       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.
      </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042572EXT-PRO">
       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
       .
      </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042572EXT-PRO">
       &#160;
       You could lose money by investing in the fund.
      </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042572EXT-PRO">
     Performance
    </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042572EXT-PRO">

      The following information is intended to help you understand the risks of investing in the fund.



       The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

       The indexes have 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.



      Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


      Visit

        www.fidelity.com

      for more recent performance information.


    </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042572EXT-PRO">
       The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
      </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042572EXT-PRO">
        Past performance (before and after taxes) is not an indication of future performance.
      </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042572EXT-PRO">
        www.fidelity.com
      </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042572EXT-PRO">
     Year-by-Year Returns
    </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">0.1574</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">0.0565</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">0.0592</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">0.1251</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">-0.0830</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">0.2673</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">0.1100</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042572C000131664"
      decimals="INF"
      unitRef="pure">0.1751</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042572EXT-PRO">
         &#160;&#160;&#160;Highest Quarter Return
       </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042572EXT-PRO" decimals="4" unitRef="pure">0.1220</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042572EXT-PRO">2021-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042572EXT-PRO">
         &#160;&#160;&#160;Lowest Quarter Return
       </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042572EXT-PRO" decimals="4" unitRef="pure">-0.1356</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042572EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042572EXT-PRO">
         &#160;&#160;&#160;Year-to-Date Return
       </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042572EXT-PRO" decimals="4" unitRef="pure">-0.1253</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042572EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042572EXT-PRO">
     Average Annual Returns
    </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042572EXT-PRO">

      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.

    </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042572EXT-PRO">
      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.
     </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042572EXT-PRO">
       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).
     </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042572EXT-PRO">
       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.
     </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042572C000131664ReturnBeforeTaxes">
        Return Before Taxes
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042572C000131664ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1751</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042572C000131664ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1127</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042572C000131664ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042572AAR_C00013166_RBT"
      unitRef="pure">0.1077</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042572C000131664AfterTaxesOnDistributions">
        Return After Taxes on Distributions
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042572C000131664AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1685</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042572C000131664AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1057</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042572C000131664AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042572AAR_C000131664_ATD"
      unitRef="pure">0.1008</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042572C000131664AfterTaxesOnDistributionsAndSales">
        Return After Taxes on Distributions and Sale of Fund Shares
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042572C000131664AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1075</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042572C000131664AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.0881</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042572C000131664AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042572AAR_C000131664_ATDS"
      unitRef="pure">0.0861</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042572IndexIXWMXEXT-PRO">
        Fidelity MSCI Consumer Staples Index ETF Capped Linked Index&#x2120;
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042572IndexIXWMXEXT-PRO"
      decimals="4"
      unitRef="pure">0.1762</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042572IndexIXWMXEXT-PRO"
      decimals="4"
      unitRef="pure">0.1141</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042572IndexIXWMXEXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042572AAR_A_IndexIXWMX"
      unitRef="pure">0.1092</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042572IndexSP001EXT-PRO">
        S&amp;P 500&#xae; Index
       </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042572IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042572IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042572IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042572AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042572EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042573EXT-PRO">
     Fund Summary

      Fund:



       Fidelity&#xae; MSCI Energy Index ETF



    </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042573EXT-PRO">
     Investment Objective
    </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042573EXT-PRO">
     Fidelity&#xae; MSCI Energy Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Energy 25/50 Index.
    </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042573EXT-PRO">
     Fee Table
    </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042573EXT-PRO">

      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 table or example below.


    </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042573EXT-PRO">
     Shareholder fees
    </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042573EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042573EXT-PRO">
     Annual Operating Expenses
    </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042573C000131665"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042573C000131665"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042573C000131665"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042573C000131665"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042573EXT-PRO">
     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:
    </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042573C000131665"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042573C000131665"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042573C000131665"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042573C000131665"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042573EXT-PRO">
      Portfolio Turnover
     </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042573EXT-PRO">
      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 &#160;

       8

      % of the average value of its portfolio.
     </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042573EXT-PRO" decimals="4" unitRef="pure">0.08</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042573EXT-PRO">
      Principal Investment Strategies
     </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042573EXT-PRO">



         Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Energy 25/50 Index, which represents the performance of the energy sector in the U.S. equity market.

       Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Energy 25/50 Index.


     </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042573EXT-PRO">
         Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Energy 25/50 Index, which represents the performance of the energy sector in the U.S. equity market.
        </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042573EXT-PRO">
      Principal Investment Risks
     </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042573EXT-PRO">

       Stock Market Volatility.


       Stock markets and, as a result, stock market indexes, 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.


       Energy Industry Concentration.


       The energy industries can be significantly affected by fluctuations in energy prices and supply and demand of energy fuels, energy conservation, the success of exploration projects, and tax and other government regulations.


       Issuer-Specific Changes.


       The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


       The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


       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.


       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.


       Correlation to Index.


       The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


       Passive Management Risk.


       The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


       The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


       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. In addition, trading may be halted, for example, due to market conditions.



        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.




        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
        .


        &#160;
        You could lose money by investing in the fund.



     </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042573EXT-PRO">
        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.
       </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042573EXT-PRO">
        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
        .
       </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042573EXT-PRO">
        &#160;
        You could lose money by investing in the fund.
       </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042573EXT-PRO">
      Performance
     </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042573EXT-PRO">

       The following information is intended to help you understand the risks of investing in the fund.



        The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

        The indexes have 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.



       Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


       Visit

         www.fidelity.com

       for more recent performance information.


     </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042573EXT-PRO">
        The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
       </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042573EXT-PRO">
         Past performance (before and after taxes) is not an indication of future performance.
       </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042573EXT-PRO">
         www.fidelity.com
       </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042573EXT-PRO">
      Year-by-Year Returns
     </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">-0.0979</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">0.2300</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">0.2703</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">-0.0243</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">-0.1995</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">0.0923</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">-0.3311</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042573C000131665"
      decimals="INF"
      unitRef="pure">0.5548</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042573EXT-PRO">
          &#160;&#160;&#160;Highest Quarter Return
        </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042573EXT-PRO" decimals="4" unitRef="pure">0.3293</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042573EXT-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042573EXT-PRO">
          &#160;&#160;&#160;Lowest Quarter Return
        </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042573EXT-PRO" decimals="4" unitRef="pure">-0.5213</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042573EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042573EXT-PRO">
          &#160;&#160;&#160;Year-to-Date Return
        </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042573EXT-PRO" decimals="4" unitRef="pure">0.3484</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042573EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042573EXT-PRO">
      Average Annual Returns
     </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042573EXT-PRO">

       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.

     </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042573EXT-PRO">
       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.
      </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042573EXT-PRO">
        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).
      </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042573EXT-PRO">
        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.
      </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042573C000131665ReturnBeforeTaxes">
         Return Before Taxes
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042573C000131665ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.5548</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042573C000131665ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">-0.0237</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042573C000131665ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042573AAR__RBT"
      unitRef="pure">-0.0256</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042573C000131665AfterTaxesOnDistributions">
         Return After Taxes on Distributions
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042573C000131665AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.5400</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042573C000131665AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">-0.0337</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042573C000131665AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042573AAR_C000131665_ATD"
      unitRef="pure">-0.0338</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042573C000131665AfterTaxesOnDistributionsAndSales">
         Return After Taxes on Distributions and Sale of Fund Shares
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042573C000131665AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.3370</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042573C000131665AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">-0.0190</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042573C000131665AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042573AAR_C000131665_ATDS"
      unitRef="pure">-0.0196</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042573IndexIXWMYEXT-PRO">
         Fidelity MSCI Energy Index ETF Capped Linked Index&#x2120;
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042573IndexIXWMYEXT-PRO"
      decimals="4"
      unitRef="pure">0.5569</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042573IndexIXWMYEXT-PRO"
      decimals="4"
      unitRef="pure">-0.0230</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042573IndexIXWMYEXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042573AAR_A_IndexIXWMY"
      unitRef="pure">-0.0248</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042573IndexSP001EXT-PRO">
         S&amp;P 500&#xae; Index
        </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042573IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042573IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042573IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042573AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042573EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042574EXT-PRO">
      Fund Summary

       Fund:



        Fidelity&#xae; MSCI Financials Index ETF



     </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042574EXT-PRO">
      Investment Objective
     </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042574EXT-PRO">
      Fidelity&#xae; MSCI Financials Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Financials 25/50 Index.
     </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042574EXT-PRO">
      Fee Table
     </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042574EXT-PRO">

       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 table or example below.


     </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042574EXT-PRO">
      Shareholder fees
     </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042574EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042574EXT-PRO">
      Annual Operating Expenses
     </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042574C000131666"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042574C000131666"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042574C000131666"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042574C000131666"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042574EXT-PRO">
      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:
     </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042574C000131666"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042574C000131666"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042574C000131666"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042574C000131666"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042574EXT-PRO">
       Portfolio Turnover
      </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042574EXT-PRO">
       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

         6

       % of the average value of its portfolio.
      </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042574EXT-PRO" decimals="4" unitRef="pure">0.06</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042574EXT-PRO">
       Principal Investment Strategies
      </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042574EXT-PRO">



          Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Financials 25/50 Index, which represents the performance of the financial sector in the U.S. equity market.

        Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Financials 25/50 Index.


      </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042574EXT-PRO">
          Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Financials 25/50 Index, which represents the performance of the financial sector in the U.S. equity market.
         </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042574EXT-PRO">
       Principal Investment Risks
      </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042574EXT-PRO">

        Stock Market Volatility.


        Stock markets and, as a result, stock market indexes, 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.


        Financials Industry Concentration.


        The financials industries are subject to extensive government regulation, can be subject to relatively rapid change due to increasingly blurred distinctions between service segments, and can be significantly affected by availability and cost of capital funds, changes in interest rates, the rate of corporate and consumer debt defaults, and price competition.


        Issuer-Specific Changes.


        The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


        The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


        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.


        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.


        Correlation to Index.


        The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


        Passive Management Risk.


        The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


        The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


        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. In addition, trading may be halted, for example, due to market conditions.



         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.




         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
         .


         &#160;
         You could lose money by investing in the fund.



      </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042574EXT-PRO">
         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.
        </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042574EXT-PRO">
         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
         .
        </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042574EXT-PRO">
         &#160;
         You could lose money by investing in the fund.
        </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042574EXT-PRO">
       Performance
      </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042574EXT-PRO">

        The following information is intended to help you understand the risks of investing in the fund.



         The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

         The indexes have 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.



        Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


        Visit

          www.fidelity.com

        for more recent performance information.


      </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042574EXT-PRO">
         The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
        </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042574EXT-PRO">
          Past performance (before and after taxes) is not an indication of future performance.
        </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042574EXT-PRO">
          www.fidelity.com
        </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042574EXT-PRO">
       Year-by-Year Returns
      </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">0.1398</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">-0.0062</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">0.2474</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">0.1998</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">-0.1336</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">0.3162</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">-0.0216</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042574C000131666"
      decimals="INF"
      unitRef="pure">0.3510</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042574EXT-PRO">
           &#160;&#160;&#160;Highest Quarter Return
         </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042574EXT-PRO" decimals="4" unitRef="pure">0.2533</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042574EXT-PRO">2020-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042574EXT-PRO">
           &#160;&#160;&#160;Lowest Quarter Return
         </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042574EXT-PRO" decimals="4" unitRef="pure">-0.3309</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042574EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042574EXT-PRO">
           &#160;&#160;&#160;Year-to-Date Return
         </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042574EXT-PRO" decimals="4" unitRef="pure">-0.2174</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042574EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042574EXT-PRO">
       Average Annual Returns
      </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042574EXT-PRO">

        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.

      </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042574EXT-PRO">
        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.
       </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042574EXT-PRO">
         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).
       </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042574EXT-PRO">
         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.
       </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042574C000131666ReturnBeforeTaxes">
          Return Before Taxes
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042574C000131666ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.3510</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042574C000131666ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1258</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042574C000131666ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042574AAR_C000131666_RBT"
      unitRef="pure">0.1272</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042574C000131666AfterTaxesOnDistributions">
          Return After Taxes on Distributions
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042574C000131666AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.3450</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042574C000131666AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1198</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042574C000131666AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042574AAR_C000131666_ATD"
      unitRef="pure">0.1208</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042574C000131666AfterTaxesOnDistributionsAndSales">
          Return After Taxes on Distributions and Sale of Fund Shares
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042574C000131666AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.2115</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042574C000131666AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.0990</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042574C000131666AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042574AAR_C000131666_ATDS"
      unitRef="pure">0.1025</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042574IndexIXWMZEXT-PRO">
          Fidelity MSCI Financials Index ETF Capped Linked Index&#x2120;
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042574IndexIXWMZEXT-PRO"
      decimals="4"
      unitRef="pure">0.3522</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042574IndexIXWMZEXT-PRO"
      decimals="4"
      unitRef="pure">0.1269</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042574IndexIXWMZEXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042574AAR_A_IndexIXWMZ"
      unitRef="pure">0.1284</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042574IndexSP001EXT-PRO">
          S&amp;P 500&#xae; Index
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042574IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042574IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042574IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042574AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042574EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042575EXT-PRO">
       Fund Summary

        Fund:



         Fidelity&#xae; MSCI Health Care Index ETF



      </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042575EXT-PRO">
       Investment Objective
      </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042575EXT-PRO">
       Fidelity&#xae; MSCI Health Care Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Health Care 25/50 Index.
      </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042575EXT-PRO">
       Fee Table
      </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042575EXT-PRO">

        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 table or example below.


      </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042575EXT-PRO">
       Shareholder fees
      </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042575EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042575EXT-PRO">
       Annual Operating Expenses
      </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042575C000131667"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042575C000131667"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042575C000131667"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042575C000131667"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042575EXT-PRO">
       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:
      </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042575C000131667"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042575C000131667"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042575C000131667"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042575C000131667"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042575EXT-PRO">
        Portfolio Turnover
       </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042575EXT-PRO">
        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

          4

        % of the average value of its portfolio.
       </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042575EXT-PRO" decimals="4" unitRef="pure">0.04</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042575EXT-PRO">
        Principal Investment Strategies
       </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042575EXT-PRO">



           Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Health Care 25/50 Index, which represents the performance of the health care sector in the U.S. equity market.

         Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Health Care 25/50 Index.


       </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042575EXT-PRO">
           Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Health Care 25/50 Index, which represents the performance of the health care sector in the U.S. equity market.
          </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042575EXT-PRO">
        Principal Investment Risks
       </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042575EXT-PRO">

         Stock Market Volatility.


         Stock markets and, as a result, stock market indexes, 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.


         Health Care Industry Concentration.


         The health care industries are subject to government regulation and reimbursement rates, as well as government approval of products and services, which could have a significant effect on price and availability, and can be significantly affected by product liability claims, rapid obsolescence, and patent expirations.


         Issuer-Specific Changes.


         The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


         The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


         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.


         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.


         Correlation to Index.


         The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


         Passive Management Risk.


         The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


         The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


         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. In addition, trading may be halted, for example, due to market conditions.



          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.




          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
          .


          &#160;
          You could lose money by investing in the fund.



       </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042575EXT-PRO">
          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.
         </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042575EXT-PRO">
          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
          .
         </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042575EXT-PRO">
          &#160;
          You could lose money by investing in the fund.
         </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042575EXT-PRO">
        Performance
       </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042575EXT-PRO">

         The following information is intended to help you understand the risks of investing in the fund.



          The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

          The indexes have 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.



         Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


         Visit

           www.fidelity.com

         for more recent performance information.


       </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042575EXT-PRO">
          The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
         </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042575EXT-PRO">
           Past performance (before and after taxes) is not an indication of future performance.
         </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042575EXT-PRO">
           www.fidelity.com
         </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042575EXT-PRO">
        Year-by-Year Returns
       </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">0.2523</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">0.0704</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">-0.0333</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">0.2331</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">0.0552</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">0.2194</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">0.1813</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042575C000131667"
      decimals="INF"
      unitRef="pure">0.2037</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042575EXT-PRO">
            &#160;&#160;&#160;Highest Quarter Return
          </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042575EXT-PRO" decimals="4" unitRef="pure">0.1637</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042575EXT-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042575EXT-PRO">
            &#160;&#160;&#160;Lowest Quarter Return
          </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042575EXT-PRO" decimals="4" unitRef="pure">-0.1309</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042575EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042575EXT-PRO">
            &#160;&#160;&#160;Year-to-Date Return
          </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042575EXT-PRO" decimals="4" unitRef="pure">-0.1521</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042575EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042575EXT-PRO">
        Average Annual Returns
       </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042575EXT-PRO">

         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.

       </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042575EXT-PRO">
         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.
        </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042575EXT-PRO">
          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).
        </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042575EXT-PRO">
          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.
        </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042575C000131667ReturnBeforeTaxes">
           Return Before Taxes
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042575C000131667ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2037</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042575C000131667ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1767</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042575C000131667ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042575AAR_C000131667_RBT"
      unitRef="pure">0.1486</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042575C000131667AfterTaxesOnDistributions">
           Return After Taxes on Distributions
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042575C000131667AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2001</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042575C000131667AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1723</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042575C000131667AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042575AAR_C000131667_ATD"
      unitRef="pure">0.1444</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042575C000131667AfterTaxesOnDistributionsAndSales">
           Return After Taxes on Distributions and Sale of Fund Shares
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042575C000131667AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1228</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042575C000131667AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1424</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042575C000131667AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042575AAR_C000131667_ATDS"
      unitRef="pure">0.1226</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042575IndexIXWN0EXT-PRO">
           Fidelity MSCI Health Care Index ETF Capped Linked Index&#x2120;
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042575IndexIXWN0EXT-PRO"
      decimals="4"
      unitRef="pure">0.2047</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042575IndexIXWN0EXT-PRO"
      decimals="4"
      unitRef="pure">0.1779</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042575IndexIXWN0EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042575AAR_A_IndexIXWN0"
      unitRef="pure">0.1499</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042575IndexSP001EXT-PRO">
           S&amp;P 500&#xae; Index
          </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042575IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042575IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042575IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042575AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042575EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042576EXT-PRO">
        Fund Summary

         Fund:



          Fidelity&#xae; MSCI Industrials Index ETF



       </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042576EXT-PRO">
        Investment Objective
       </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042576EXT-PRO">
        Fidelity&#xae; MSCI Industrials Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Industrials 25/25 Index.
       </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042576EXT-PRO">
        Fee Table
       </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042576EXT-PRO">

         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 table or example below.


       </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042576EXT-PRO">
        Shareholder fees
       </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042576EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042576EXT-PRO">
        Annual Operating Expenses
       </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042576C000131668"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042576C000131668"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042576C000131668"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042576C000131668"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042576EXT-PRO">
        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:
       </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042576C000131668"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042576C000131668"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042576C000131668"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042576C000131668"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042576EXT-PRO">
         Portfolio Turnover
        </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042576EXT-PRO">
         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 &#160;

          7

         % of the average value of its portfolio.
        </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042576EXT-PRO" decimals="4" unitRef="pure">0.07</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042576EXT-PRO">
         Principal Investment Strategies
        </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042576EXT-PRO">



            Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Industrials 25/25 Index, which represents the performance of the industrial sector in the U.S. equity market.

          Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Industrials 25/25 Index.


        </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042576EXT-PRO">
            Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Industrials 25/25 Index, which represents the performance of the industrial sector in the U.S. equity market.
           </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042576EXT-PRO">
         Principal Investment Risks
        </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042576EXT-PRO">

          Stock Market Volatility.


          Stock markets and, as a result, stock market indexes, 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.


          Industrials Industry Concentration.


          Industrial industries can be significantly affected by general economic trends, changes in consumer sentiment and spending, commodity prices, legislation, government regulation and spending, import controls, worldwide competition, and liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control.


          Issuer-Specific Changes.


          The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


          The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


          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.


          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.


          Correlation to Index.


          The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


          Passive Management Risk.


          The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


          The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


          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. In addition, trading may be halted, for example, due to market conditions.



           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
           .


           &#160;
           You could lose money by investing in the fund.



        </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042576EXT-PRO">
           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
           .
          </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042576EXT-PRO">
           &#160;
           You could lose money by investing in the fund.
          </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042576EXT-PRO">
         Performance
        </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042576EXT-PRO">

          The following information is intended to help you understand the risks of investing in the fund.



           The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

           The indexes have 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.



          Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


          Visit

            www.fidelity.com

          for more recent performance information.


        </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042576EXT-PRO">
           The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
          </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042576EXT-PRO">
            Past performance (before and after taxes) is not an indication of future performance.
          </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042576EXT-PRO">
            www.fidelity.com
          </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042576EXT-PRO">
         Year-by-Year Returns
        </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">0.0652</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">-0.0363</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">0.2068</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">0.2210</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">-0.1381</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">0.3068</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">0.1371</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042576C000131668"
      decimals="INF"
      unitRef="pure">0.2113</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042576EXT-PRO">
             &#160;&#160;&#160;Highest Quarter Return
           </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042576EXT-PRO" decimals="4" unitRef="pure">0.1844</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042576EXT-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042576EXT-PRO">
             &#160;&#160;&#160;Lowest Quarter Return
           </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042576EXT-PRO" decimals="4" unitRef="pure">-0.2709</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042576EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042576EXT-PRO">
             &#160;&#160;&#160;Year-to-Date Return
           </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042576EXT-PRO" decimals="4" unitRef="pure">-0.2146</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042576EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042576EXT-PRO">
         Average Annual Returns
        </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042576EXT-PRO">

          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.

        </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042576EXT-PRO">
          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.
         </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042576EXT-PRO">
           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).
         </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042576EXT-PRO">
           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.
         </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042576C000131668ReturnBeforeTaxes">
            Return Before Taxes
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042576C000131668ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2113</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042576C000131668ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1363</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042576C000131668ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042576AAR_C000131668_RBT"
      unitRef="pure">0.1215</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042576C000131668AfterTaxesOnDistributions">
            Return After Taxes on Distributions
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042576C000131668AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2079</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042576C000131668AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1318</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042576C000131668AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042576AAR_C000131668_ATD"
      unitRef="pure">0.1170</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042576C000131668AfterTaxesOnDistributionsAndSales">
            Return After Taxes on Distributions and Sale of Fund Shares
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042576C000131668AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1273</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042576C000131668AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1082</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042576C000131668AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042576AAR_C000131668_ATDS"
      unitRef="pure">0.0986</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042576IndexIXWN1EXT-PRO">
            Fidelity MSCI Industrials Index ETF Capped Linked Index&#x2120;
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042576IndexIXWN1EXT-PRO"
      decimals="4"
      unitRef="pure">0.2124</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042576IndexIXWN1EXT-PRO"
      decimals="4"
      unitRef="pure">0.1373</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042576IndexIXWN1EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042576AAR_A_IndexIXWN1"
      unitRef="pure">0.1227</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042576IndexSP001EXT-PRO">
            S&amp;P 500&#xae; Index
           </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042576IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042576IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042576IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042576AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042576EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042577EXT-PRO">
         Fund Summary

          Fund:



           Fidelity&#xae; MSCI Information Technology Index ETF



        </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042577EXT-PRO">
         Investment Objective
        </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042577EXT-PRO">
         Fidelity&#xae; MSCI Information Technology Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Information Technology 25/50 Index.
        </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042577EXT-PRO">
         Fee Table
        </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042577EXT-PRO">

          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 table or example below.


        </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042577EXT-PRO">
         Shareholder fees
        </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042577EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042577EXT-PRO">
         Annual Operating Expenses
        </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042577C000131669"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042577C000131669"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042577C000131669"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042577C000131669"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042577EXT-PRO">
         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:
        </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042577C000131669"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042577C000131669"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042577C000131669"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042577C000131669"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042577EXT-PRO">
          Portfolio Turnover
         </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042577EXT-PRO">
          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 &#160;

           5

          % of the average value of its portfolio.
         </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042577EXT-PRO" decimals="4" unitRef="pure">0.05</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042577EXT-PRO">
          Principal Investment Strategies
         </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042577EXT-PRO">



             Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Information Technology 25/50 Index, which represents the performance of the information technology sector in the U.S. equity market.

           Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Information Technology 25/50 Index.


         </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042577EXT-PRO">
             Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Information Technology 25/50 Index, which represents the performance of the information technology sector in the U.S. equity market.
            </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042577EXT-PRO">
          Principal Investment Risks
         </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042577EXT-PRO">

           Stock Market Volatility.


           Stock markets and, as a result, stock market indexes, 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.


           Information Technology Industry Concentration.


           The information technology industries can be significantly affected by obsolescence of existing technology, short product cycles, falling prices and profits, competition from new market entrants, and general economic conditions. In addition, information technology industries can be affected by the loss or impairment of intellectual property rights.


           Issuer-Specific Changes.


           The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


           The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


           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.


           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.


           Correlation to Index.


           The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


           Passive Management Risk.


           The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


           The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


           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. In addition, trading may be halted, for example, due to market conditions.



            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.




            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
            .


            &#160;
            You could lose money by investing in the fund.



         </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042577EXT-PRO">
            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.
           </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042577EXT-PRO">
            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
            .
           </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042577EXT-PRO">
            &#160;
            You could lose money by investing in the fund.
           </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042577EXT-PRO">
          Performance
         </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042577EXT-PRO">

           The following information is intended to help you understand the risks of investing in the fund.



            The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

            The indexes have 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.



           Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


           Visit

             www.fidelity.com

           for more recent performance information.


         </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042577EXT-PRO">
            The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
           </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042577EXT-PRO">
             Past performance (before and after taxes) is not an indication of future performance.
           </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042577EXT-PRO">
             www.fidelity.com
           </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042577EXT-PRO">
          Year-by-Year Returns
         </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">0.1816</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">0.0505</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">0.1380</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">0.3708</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">-0.0018</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">0.4867</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">0.4590</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042577C000131669"
      decimals="INF"
      unitRef="pure">0.3040</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042577EXT-PRO">
              &#160;&#160;&#160;Highest Quarter Return
            </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042577EXT-PRO" decimals="4" unitRef="pure">0.3180</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042577EXT-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042577EXT-PRO">
              &#160;&#160;&#160;Lowest Quarter Return
            </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042577EXT-PRO" decimals="4" unitRef="pure">-0.1777</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042577EXT-PRO">2018-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042577EXT-PRO">
              &#160;&#160;&#160;Year-to-Date Return
            </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042577EXT-PRO" decimals="4" unitRef="pure">-0.3245</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042577EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042577EXT-PRO">
          Average Annual Returns
         </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042577EXT-PRO">

           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.

         </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042577EXT-PRO">
           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.
          </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042577EXT-PRO">
            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).
          </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042577EXT-PRO">
            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.
          </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042577C000131669ReturnBeforeTaxes">
             Return Before Taxes
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042577C000131669ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.3040</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042577C000131669ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.3108</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042577C000131669ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042577AAR_C000131669_RBT"
      unitRef="pure">0.2415</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042577C000131669AfterTaxesOnDistributions">
             Return After Taxes on Distributions
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042577C000131669AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.3017</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042577C000131669AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.3076</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042577C000131669AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042577AAR_C000131669_ATD"
      unitRef="pure">0.2382</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042577C000131669AfterTaxesOnDistributionsAndSales">
             Return After Taxes on Distributions and Sale of Fund Shares
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042577C000131669AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1812</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042577C000131669AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.2594</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042577C000131669AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042577AAR_C000131669_ATDS"
      unitRef="pure">0.2066</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042577IndexIXWN2EXT-PRO">
             Fidelity MSCI Information Technology Index ETF Capped Linked Index&#x2120;
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042577IndexIXWN2EXT-PRO"
      decimals="4"
      unitRef="pure">0.3050</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042577IndexIXWN2EXT-PRO"
      decimals="4"
      unitRef="pure">0.3121</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042577IndexIXWN2EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042577AAR_A_IndexIXWN2"
      unitRef="pure">0.2427</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042577IndexSP001EXT-PRO">
             S&amp;P 500&#xae; Index
            </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042577IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042577IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042577IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042577AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042577EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042578EXT-PRO">
          Fund Summary

           Fund:



            Fidelity&#xae; MSCI Materials Index ETF



         </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042578EXT-PRO">
          Investment Objective
         </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042578EXT-PRO">
          Fidelity&#xae; MSCI Materials Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Materials 25/50 Index.
         </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042578EXT-PRO">
          Fee Table
         </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042578EXT-PRO">

           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 table or example below.


         </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042578EXT-PRO">
          Shareholder fees
         </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042578EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042578EXT-PRO">
          Annual Operating Expenses
         </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042578C000131670"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042578C000131670"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042578C000131670"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042578C000131670"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042578EXT-PRO">
          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:
         </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042578C000131670"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042578C000131670"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042578C000131670"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042578C000131670"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042578EXT-PRO">
           Portfolio Turnover
          </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042578EXT-PRO">
           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

             4

           % of the average value of its portfolio.
          </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042578EXT-PRO" decimals="4" unitRef="pure">0.04</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042578EXT-PRO">
           Principal Investment Strategies
          </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042578EXT-PRO">



              Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Materials 25/50 Index, which represents the performance of the materials sector in the U.S. equity market.

            Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Materials 25/50 Index.


          </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042578EXT-PRO">
              Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Materials 25/50 Index, which represents the performance of the materials sector in the U.S. equity market.
             </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042578EXT-PRO">
           Principal Investment Risks
          </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042578EXT-PRO">

            Stock Market Volatility.


            Stock markets and, as a result, stock market indexes, 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.


            Materials Industry Concentration.


            The materials industries can be significantly affected by the level and volatility of commodity prices, the exchange value of the dollar, import and export controls, worldwide competition, liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control.


            Issuer-Specific Changes.


            The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


            The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


            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.


            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.


            Correlation to Index.


            The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


            Passive Management Risk.


            The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


            The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


            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. In addition, trading may be halted, for example, due to market conditions.



             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.




             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
             .


             &#160;
             You could lose money by investing in the fund.



          </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042578EXT-PRO">
             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.
            </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042578EXT-PRO">
             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
             .
            </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042578EXT-PRO">
             &#160;
             You could lose money by investing in the fund.
            </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042578EXT-PRO">
           Performance
          </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042578EXT-PRO">

            The following information is intended to help you understand the risks of investing in the fund.



             The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

             The indexes have 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.



            Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


            Visit

              www.fidelity.com

            for more recent performance information.


          </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042578EXT-PRO">
             The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
            </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042578EXT-PRO">
              Past performance (before and after taxes) is not an indication of future performance.
            </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042578EXT-PRO">
              www.fidelity.com
            </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042578EXT-PRO">
           Year-by-Year Returns
          </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">0.0575</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">-0.1021</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">0.2146</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">0.2341</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">-0.1740</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">0.2355</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">0.1936</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042578C000131670"
      decimals="INF"
      unitRef="pure">0.2760</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042578EXT-PRO">
               &#160;&#160;&#160;Highest Quarter Return
             </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042578EXT-PRO" decimals="4" unitRef="pure">0.2614</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042578EXT-PRO">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042578EXT-PRO">
               &#160;&#160;&#160;Lowest Quarter Return
             </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042578EXT-PRO" decimals="4" unitRef="pure">-0.2797</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042578EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042578EXT-PRO">
               &#160;&#160;&#160;Year-to-Date Return
             </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042578EXT-PRO" decimals="4" unitRef="pure">-0.2340</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042578EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042578EXT-PRO">
           Average Annual Returns
          </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042578EXT-PRO">

            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.

          </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042578EXT-PRO">
            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.
           </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042578EXT-PRO">
             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).
           </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042578EXT-PRO">
             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.
           </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042578C000131670ReturnBeforeTaxes">
              Return Before Taxes
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042578C000131670ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2760</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042578C000131670ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1391</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042578C000131670ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042578AAR_C000131670_RBT"
      unitRef="pure">0.1101</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042578C000131670AfterTaxesOnDistributions">
              Return After Taxes on Distributions
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042578C000131670AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2712</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042578C000131670AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1339</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042578C000131670AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042578AAR_C000131670_ATD"
      unitRef="pure">0.1051</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042578C000131670AfterTaxesOnDistributionsAndSales">
              Return After Taxes on Distributions and Sale of Fund Shares
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042578C000131670AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1662</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042578C000131670AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1103</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042578C000131670AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042578AAR_C000131670_ATDS"
      unitRef="pure">0.0884</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042578IndexIXWN3EXT-PRO">
              Fidelity MSCI Materials Index ETF Capped Linked Index&#x2120;
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042578IndexIXWN3EXT-PRO"
      decimals="4"
      unitRef="pure">0.2744</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042578IndexIXWN3EXT-PRO"
      decimals="4"
      unitRef="pure">0.1396</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042578IndexIXWN3EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042578AAR_A_IndexIXWN3"
      unitRef="pure">0.1106</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042578IndexSP001EXT-PRO">
              S&amp;P 500&#xae; Index
             </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042578IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042578IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042578IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042578AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042578EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000047984EXT-PRO">
           Fund Summary

            Fund:



             Fidelity&#xae; MSCI Real Estate Index ETF



          </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000047984EXT-PRO">
           Investment Objective
          </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000047984EXT-PRO">
           Fidelity&#xae; MSCI Real Estate Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Real Estate 25/25 Index.
          </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000047984EXT-PRO">
           Fee Table
          </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000047984EXT-PRO">

            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 table or example below.


          </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000047984EXT-PRO">
           Shareholder fees
          </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000047984EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000047984EXT-PRO">
           Annual Operating Expenses
          </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000047984C000151119"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000047984C000151119"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000047984C000151119"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000047984C000151119"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000047984EXT-PRO">
           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:
          </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000047984C000151119"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000047984C000151119"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000047984C000151119"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000047984C000151119"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000047984EXT-PRO">
            Portfolio Turnover
           </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000047984EXT-PRO">
            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

              11

            % of the average value of its portfolio.
           </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000047984EXT-PRO" decimals="4" unitRef="pure">0.11</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000047984EXT-PRO">
            Principal Investment Strategies
           </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000047984EXT-PRO">



               Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Real Estate 25/25 Index, which represents the performance of the real estate sector in the U.S. equity market.

             Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Real Estate 25/25 Index.


           </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000047984EXT-PRO">
               Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Real Estate 25/25 Index, which represents the performance of the real estate sector in the U.S. equity market.
              </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000047984EXT-PRO">
            Principal Investment Risks
           </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000047984EXT-PRO">

             Stock Market Volatility.


             Stock markets and, as a result, stock market indexes, 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.


             Real Estate Industry Concentration.


             Changes in real estate values or economic downturns can have a significant negative effect on issuers in the real estate industry. The value of securities of issuers in the real estate industry can be affected by changes in real estate values and rental income, property taxes, interest rates, tax and regulatory requirements, and the management skill and creditworthiness of the issuer.


             Issuer-Specific Changes.


             The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


             The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


             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.


             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.


             Correlation to Index.


             The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


             Ownership Limitation Risk.


             The fund may be unable to purchase certain securities included in its underlying index because of limitations on ownership of certain securities, in particular real estate investment trusts (REITs). The fund may experience increased tracking error in these circumstances.


             Passive Management Risk.


             The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


             The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


             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. In addition, trading may be halted, for example, due to market conditions.



              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
              .


              &#160;
              You could lose money by investing in the fund.



           </rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000047984EXT-PRO">
              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
              .
             </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000047984EXT-PRO">
              &#160;
              You could lose money by investing in the fund.
             </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000047984EXT-PRO">
            Performance
           </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000047984EXT-PRO">

             The following information is intended to help you understand the risks of investing in the fund.



              The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

              The indexes have 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.



             Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


             Visit

               www.fidelity.com

             for more recent performance information.


           </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000047984EXT-PRO">
              The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
             </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000047984EXT-PRO">
               Past performance (before and after taxes) is not an indication of future performance.
             </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000047984EXT-PRO">
               www.fidelity.com
             </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000047984EXT-PRO">
            Year-by-Year Returns
           </rr:BarChartHeading>
    <rr:AnnualReturn2016
      contextRef="S000047984C000151119"
      decimals="INF"
      unitRef="pure">0.0806</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000047984C000151119"
      decimals="INF"
      unitRef="pure">0.0892</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000047984C000151119"
      decimals="INF"
      unitRef="pure">-0.0450</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000047984C000151119"
      decimals="INF"
      unitRef="pure">0.2887</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000047984C000151119"
      decimals="INF"
      unitRef="pure">-0.0491</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000047984C000151119"
      decimals="INF"
      unitRef="pure">0.4050</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000047984EXT-PRO">
                &#160;&#160;&#160;Highest Quarter Return
              </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000047984EXT-PRO" decimals="4" unitRef="pure">0.1720</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000047984EXT-PRO">2019-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000047984EXT-PRO">
                &#160;&#160;&#160;Lowest Quarter Return
              </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000047984EXT-PRO" decimals="4" unitRef="pure">-0.2418</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000047984EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000047984EXT-PRO">
                &#160;&#160;&#160;Year-to-Date Return
              </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000047984EXT-PRO" decimals="4" unitRef="pure">-0.2918</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000047984EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000047984EXT-PRO">
            Average Annual Returns
           </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000047984EXT-PRO">

             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.

           </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000047984EXT-PRO">
             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.
            </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000047984EXT-PRO">
              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).
            </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000047984EXT-PRO">
              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.
            </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000047984C000151119ReturnBeforeTaxes">
               Return Before Taxes
              </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000047984C000151119ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.4050</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000047984C000151119ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1236</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000047984C000151119ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000047984AAR_C000151119_RBT"
      unitRef="pure">0.0945</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000047984C000151119AfterTaxesOnDistributions">
               Return After Taxes on Distributions
              </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000047984C000151119AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.3918</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000047984C000151119AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1087</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000047984C000151119AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000047984AAR_C000151119_ATD"
      unitRef="pure">0.0787</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000047984C000151119AfterTaxesOnDistributionsAndSales">
               Return After Taxes on Distributions and Sale of Fund Shares
              </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000047984C000151119AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.2405</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000047984C000151119AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.0908</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000047984C000151119AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000047984AAR_C000151119_ATDS"
      unitRef="pure">0.0670</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000047984IndexIXWN4EXT-PRO">
               Fidelity MSCI Real Estate Index ETF Capped Linked Index&#x2120;
              </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000047984IndexIXWN4EXT-PRO"
      decimals="4"
      unitRef="pure">0.4068</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000047984IndexIXWN4EXT-PRO"
      decimals="4"
      unitRef="pure">0.1252</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000047984IndexIXWN4EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000047984AAR_A_IndexIXWN4"
      unitRef="pure">0.0957</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000047984IndexSP001EXT-PRO">
               S&amp;P 500&#xae; Index
              </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000047984IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000047984IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000047984IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000047984AAR_A_IndexSP001"
      unitRef="pure">0.1542</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000047984EXT-PRO">2015-02-02</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000042571EXT-PRO">
            Fund Summary

             Fund:



              Fidelity&#xae; MSCI Utilities Index ETF



           </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000042571EXT-PRO">
            Investment Objective
           </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000042571EXT-PRO">
            Fidelity&#xae; MSCI Utilities Index ETF seeks to provide investment returns that correspond, before fees and expenses, generally to the performance of the MSCI USA IMI Utilities 25/50 Index.
           </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000042571EXT-PRO">
            Fee Table
           </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000042571EXT-PRO">

             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 table or example below.


           </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000042571EXT-PRO">
            Shareholder fees
           </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000042571EXT-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000042571EXT-PRO">
            Annual Operating Expenses
           </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042571C000131663"
      decimals="6"
      unitRef="pure">0.00084</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042571C000131663"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042571C000131663"
      decimals="6"
      unitRef="pure">0.00000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042571C000131663"
      decimals="6"
      unitRef="pure">0.00084</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000042571EXT-PRO">
            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:
           </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042571C000131663"
      decimals="0"
      unitRef="usd">9</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042571C000131663"
      decimals="0"
      unitRef="usd">27</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042571C000131663"
      decimals="0"
      unitRef="usd">47</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042571C000131663"
      decimals="0"
      unitRef="usd">108</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000042571EXT-PRO">
             Portfolio Turnover
            </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000042571EXT-PRO">
             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

               3

             % of the average value of its portfolio.
            </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000042571EXT-PRO" decimals="4" unitRef="pure">0.03</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000042571EXT-PRO">
             Principal Investment Strategies
            </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000042571EXT-PRO">



                Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Utilities 25/50 Index, which represents the performance of the utilities sector in the U.S. equity market.

              Using a representative sampling indexing strategy to manage the fund. "Representative sampling" is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to the index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the index. The fund may or may not hold all of the securities in the MSCI USA IMI Utilities 25/50 Index.


            </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000042571EXT-PRO">
                Investing at least 80% of assets in securities included in the fund's underlying index. The fund's underlying index is the MSCI USA IMI Utilities 25/50 Index, which represents the performance of the utilities sector in the U.S. equity market.
               </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000042571EXT-PRO">
             Principal Investment Risks
            </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000042571EXT-PRO">

              Stock Market Volatility.


              Stock markets and, as a result, stock market indexes, 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.


              Utilities Industry Concentration.


              The utilities industries can be significantly affected by government regulation, interest rate changes, financing difficulties, supply and demand of services or fuel, intense competition, natural resource conservation, and commodity price fluctuations.


              Issuer-Specific Changes.


              The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.


              The value of securities of smaller, less well-known issuers can be more volatile than that of larger issuers.


              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.


              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.


              Correlation to Index.


              The performance of the fund and its underlying index may vary somewhat due to factors such as fees and expenses of the fund, transaction costs, sample selection, regulatory restrictions, and timing differences associated with additions to and deletions from the index. Errors in the construction or calculation of the index may occur from time to time and may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.


              Passive Management Risk.


              The fund is managed with a passive investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the fund's index or of the actual securities included in the index. This differs from an actively managed fund, which typically seeks to outperform a benchmark index. As a result, the fund's performance could be lower than actively managed funds that may shift their portfolio assets to take advantage of market opportunities or lessen the impact of a market decline or a decline in the value of one or more issuers.


              The fund may be concentrated to approximately the same extent that the fund's index concentrates in the securities of issuers in a particular industry or group of industries.


              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. In addition, trading may be halted, for example, due to market conditions.



               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.




               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
               .


               &#160;
               You could lose money by investing in the fund.



            </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000042571EXT-PRO">
               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.
              </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000042571EXT-PRO">
               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
               .
              </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000042571EXT-PRO">
               &#160;
               You could lose money by investing in the fund.
              </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000042571EXT-PRO">
             Performance
            </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000042571EXT-PRO">

              The following information is intended to help you understand the risks of investing in the fund.



               The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.

               The indexes have 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.



              Prior to December 1, 2020, the fund compared its performance to a different benchmark. The fund's historical performance may not represent its current investment policies.


              Visit

                www.fidelity.com

              for more recent performance information.


            </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000042571EXT-PRO">
               The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
              </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000042571EXT-PRO">
                Past performance (before and after taxes) is not an indication of future performance.
              </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000042571EXT-PRO">
                www.fidelity.com
              </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000042571EXT-PRO">
             Year-by-Year Returns
            </rr:BarChartHeading>
    <rr:AnnualReturn2014
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">0.2683</rr:AnnualReturn2014>
    <rr:AnnualReturn2015
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">-0.0480</rr:AnnualReturn2015>
    <rr:AnnualReturn2016
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">0.1742</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">0.1233</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">0.0440</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">0.2492</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">-0.0054</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000042571C000131663"
      decimals="INF"
      unitRef="pure">0.1738</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000042571EXT-PRO">
                 &#160;&#160;&#160;Highest Quarter Return
               </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000042571EXT-PRO" decimals="4" unitRef="pure">0.1518</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000042571EXT-PRO">2016-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000042571EXT-PRO">
                 &#160;&#160;&#160;Lowest Quarter Return
               </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000042571EXT-PRO" decimals="4" unitRef="pure">-0.1412</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000042571EXT-PRO">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000042571EXT-PRO">
                 &#160;&#160;&#160;Year-to-Date Return
               </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000042571EXT-PRO" decimals="4" unitRef="pure">-0.0691</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000042571EXT-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000042571EXT-PRO">
             Average Annual Returns
            </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000042571EXT-PRO">

              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.

            </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000042571EXT-PRO">
              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.
             </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000042571EXT-PRO">
               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).
             </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000042571EXT-PRO">
               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.
             </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000042571C000131663ReturnBeforeTaxes">
                Return Before Taxes
               </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042571C000131663ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1738</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042571C000131663ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.1133</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042571C000131663ReturnBeforeTaxes"
      decimals="4"
      id="footnoteEXT-PROS000042571AAR_C000131663_RBT"
      unitRef="pure">0.1146</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042571C000131663AfterTaxesOnDistributions">
                Return After Taxes on Distributions
               </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042571C000131663AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1656</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042571C000131663AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.1051</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042571C000131663AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteEXT-PROS000042571AAR_C000131663_ATD"
      unitRef="pure">0.1058</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042571C000131663AfterTaxesOnDistributionsAndSales">
                Return After Taxes on Distributions and Sale of Fund Shares
               </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042571C000131663AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1077</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042571C000131663AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.0886</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042571C000131663AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteEXT-PROS000042571AAR_C000131663_ATDS"
      unitRef="pure">0.0915</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042571IndexIXWN5EXT-PRO">
                Fidelity MSCI Utilities Index ETF Capped Linked Index&#x2120;
               </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042571IndexIXWN5EXT-PRO"
      decimals="4"
      unitRef="pure">0.1746</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042571IndexIXWN5EXT-PRO"
      decimals="4"
      unitRef="pure">0.1147</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042571IndexIXWN5EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042571AAR_A_IndexIXWN5"
      unitRef="pure">0.1160</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000042571IndexSP001EXT-PRO">
                S&amp;P 500&#xae; Index
               </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042571IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042571IndexSP001EXT-PRO"
      decimals="4"
      unitRef="pure">0.1847</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000042571IndexSP001EXT-PRO"
      decimals="4"
      id="footnoteEXT-PROS000042571AAR_A_IndexSP001"
      unitRef="pure">0.1526</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000042571EXT-PRO">2013-10-21</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000068173GTF-PRO">
  Fund Summary

   Fund:



    Fidelity&#xae; Blue Chip Growth ETF



 </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000068173GTF-PRO">
  Investment Objective
 </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000068173GTF-PRO">
  Fidelity&#xae; Blue Chip Growth ETF seeks long-term growth of capital.
 </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000068173GTF-PRO">
  Fee Table
 </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000068173GTF-PRO">

   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 table or example below.


 </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000068173GTF-PRO">
  Shareholder fees
 </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000068173GTF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000068173GTF-PRO">
  Annual Operating Expenses
 </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000068173C000218329"
      decimals="6"
      unitRef="pure">0.0059</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000068173C000218329"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000068173C000218329"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000068173C000218329"
      decimals="6"
      unitRef="pure">0.0059</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000068173GTF-PRO">
  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:
 </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000068173C000218329"
      decimals="0"
      unitRef="usd">60</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000068173C000218329"
      decimals="0"
      unitRef="usd">189</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000068173C000218329"
      decimals="0"
      unitRef="usd">329</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000068173C000218329"
      decimals="0"
      unitRef="usd">738</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000068173GTF-PRO">
   Portfolio Turnover
  </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000068173GTF-PRO">
   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

     57

   % of the average value of its portfolio.
  </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000068173GTF-PRO" decimals="4" unitRef="pure">0.57</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000068173GTF-PRO">
   Principal Investment Strategies
  </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000068173GTF-PRO">

    The fund is an actively managed ETF that operates pursuant to an exemptive order from the Securities and Exchange Commission (Order) and is not required to publicly disclose its complete portfolio holdings each business day. Instead, the fund publishes each business day on its website a "Tracking Basket," which is designed to closely track the daily performance of the fund but is not the fund's actual portfolio. The Tracking Basket is comprised of: (1) select recently disclosed portfolio holdings and/or select securities from the universe from which the fund's investments are selected (Strategy Components); (2) liquid ETFs that convey information about the types of instruments (that are not otherwise fully represented by the Strategy Components) in which the fund invests (Representative ETFs); and (3) cash and cash equivalents. For additional information regarding the Tracking Basket, see "Additional Information about each Fund - Tracking Basket Structure" in the prospectus.
    The fund also publishes each business day on its website the "Tracking Basket Weight Overlap," which is the percentage weight overlap between the holdings of the prior business day's Tracking Basket compared to the holdings of the fund that formed the basis for the fund's calculation of net asset value per share (NAV) at the end of the prior business day. The Tracking Basket Weight Overlap is designed to provide investors with an understanding of how similar the Tracking Basket is to the fund's actual portfolio in percentage terms.
    Normally investing primarily in equity securities.
    Normally investing at least 80% of assets in blue chip companies (companies that, in Fidelity Management &amp; Research Company LLC (FMR)'s view, are well-known, well-established and well-capitalized), which generally have large or medium market capitalizations.
    Investing in companies that FMR believes have above-average growth potential (stocks of these companies are often called "growth" stocks).
    Investing in domestic and foreign issuers.
    Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.


  </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000068173GTF-PRO">
   Principal Investment Risks
  </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000068173GTF-PRO">

    Tracking Basket Structure Risk.


    The fund's Tracking Basket structure may affect the price at which shares of the fund trade in the secondary market. Although the Tracking Basket is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the fund at or close to the fund's NAV per share, there is a risk that market prices will vary significantly from NAV. Exchange Traded Funds (ETFs) trading on the basis of a published Tracking Basket may trade at a wider bid-ask spread than ETFs that publish their portfolios on a daily basis, and therefore, may cost investors more to trade. These risks may increase during periods of market disruption or volatility. In addition, although the fund seeks to benefit from keeping its portfolio information secret, market participants may attempt to use the Tracking Basket to identify the fund's trading strategy. If successful, this could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the fund and its shareholders, such as front running the fund's trades of portfolio securities.


    Arbitrage Risk.


    Unlike ETFs that publicly disclose their complete portfolio holdings each business day, the fund provides certain other information intended to allow market participants to estimate the value of positions in fund shares. Although this information is designed to facilitate arbitrage opportunities in fund shares to reduce bid-ask spread and minimize discounts or premiums between the market price and NAV of fund shares, there is no guarantee the fund's arbitrage mechanism will operate as intended and that the fund will not experience wide bid-ask spreads and/or large discounts or premiums to NAV. In addition, market participants may attempt to use the disclosed information to "reverse engineer" the fund's trading strategy, which, if successful, could increase opportunities for predatory trading practices that may have the potential to negatively impact the fund's performance.


    Fluctuation of Net Asset Value and Share Price.


    Shares&#160;may trade at a larger&#160;premium or discount to the&#160;NAV&#160;than shares of other ETFs, including ETFs that make their daily holdings public. The 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. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings.


    Trading Issues.


    The fund has no public trading history and will operate differently from other actively managed ETFs that publish their portfolio holdings on a daily basis. There can be no assurance that an active trading market will develop or be maintained or that the market for fund shares will operate as intended, which could lead to the fund's shares trading at wider spreads and larger premiums and discounts to NAV than other actively managed ETFs that publish their portfolio holdings on a daily basis, particularly during periods of market disruption or volatility. As a result, it may cost investors more to trade fund shares than shares of other ETFs. There is no guarantee that the fund will be able to attract market makers and Authorized Participants. 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.


    Trading Halt Risk.


    There may be circumstances where a security held in the fund's portfolio but not in the Tracking Basket does not have readily available market quotations. If the Adviser determines that such circumstance may affect the reliability of the Tracking Basket as an arbitrage vehicle, that information, along with the identity and weighting of that security in the fund's portfolio, will be publicly disclosed on the fund's website and the Adviser will assess appropriate remedial measures. In these circumstances, market participants may use this information to engage in certain predatory trading practices that may have the potential to harm the fund and its shareholders. In addition, if securities representing 10% or more of the fund's portfolio do not have readily available market quotations, the Adviser would promptly request the Exchange to halt trading on the fund, meaning that investors would not be able to trade their shares. Trading may also be halted in other circumstances, for example, due to market conditions.


    Authorized Participant Concentration Risk.


    The fund may have a limited number of financial institutions that act as authorized participants, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those authorized participants do not engage in creation and redemption orders, there may be a significantly diminished trading market for fund shares or fund shares may trade at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The authorized participant concentration risk may be heightened due to the fact that the fund does not disclose its portfolio holdings daily, unlike certain other actively managed ETFs, and could be greater during market disruptions or periods of volatility.


    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.


    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.


    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.


    "Growth" Investing.


     "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.
    &#160; &#160; &#160;


    Mid Cap Investing.


    The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.



     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.




     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
     .


     &#160;
     You could lose money by investing in the fund.



  </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000068173GTF-PRO">
     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.
    </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000068173GTF-PRO">
     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
     .
    </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000068173GTF-PRO">
     &#160;
     You could lose money by investing in the fund.
    </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000068173GTF-PRO">
   Performance
  </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000068173GTF-PRO">

    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 over various periods of time.

     The index description appears in the "Additional Index Information" section of the prospectus.

     Past performance (before and after taxes) is not an indication of future performance.



    Visit

      www.fidelity.com

    for more recent performance information.


  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000068173GTF-PRO">
     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 over various periods of time.
    </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000068173GTF-PRO">
     Past performance (before and after taxes) is not an indication of future performance.
    </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000068173GTF-PRO">
      www.fidelity.com
    </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000068173GTF-PRO">
   Year-by-Year Returns
  </rr:BarChartHeading>
    <rr:AnnualReturn2021
      contextRef="S000068173C000218329"
      decimals="INF"
      unitRef="pure">0.2111</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000068173GTF-PRO">
       &#160;&#160;&#160;Highest Quarter Return
     </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000068173GTF-PRO" decimals="4" unitRef="pure">0.1138</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000068173GTF-PRO">2021-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000068173GTF-PRO">
       &#160;&#160;&#160;Lowest Quarter Return
     </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000068173GTF-PRO" decimals="4" unitRef="pure">-0.0014</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000068173GTF-PRO">2021-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000068173GTF-PRO">
       &#160;&#160;&#160;Year-to-Date Return
     </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000068173GTF-PRO" decimals="4" unitRef="pure">-0.3814</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000068173GTF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000068173GTF-PRO">
   Average Annual Returns
  </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000068173GTF-PRO">

    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.

  </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000068173GTF-PRO">
    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.
   </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000068173GTF-PRO">
     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).
   </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000068173GTF-PRO">
     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.
   </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000068173C000218329ReturnBeforeTaxes">
      Return Before Taxes
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068173C000218329ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2111</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068173C000218329ReturnBeforeTaxes"
      decimals="4"
      id="footnoteETC-PROS000068173AAR_C000218329_RBT"
      unitRef="pure">0.4139</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068173C000218329AfterTaxesOnDistributions">
      Return After Taxes on Distributions
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068173C000218329AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2111</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068173C000218329AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteETC-PROS000068173AAR_C000218329_ATD"
      unitRef="pure">0.4139</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068173C000218329AfterTaxesOnDistributionsAndSales">
      Return After Taxes on Distributions and Sale of Fund Shares
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068173C000218329AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1250</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068173C000218329AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteETC-PROS000068173AAR_C000218329_ATDS"
      unitRef="pure">0.3224</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068173IndexRS004GTF-PRO">
      Russell 1000&#xae; Growth Index
     </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068173IndexRS004GTF-PRO"
      decimals="4"
      unitRef="pure">0.2760</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068173IndexRS004GTF-PRO"
      decimals="4"
      id="footnoteETC-PROS000068173AAR_A_IndexRS004"
      unitRef="pure">0.3778</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000068173GTF-PRO">2020-06-02</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000068175GTF-PRO">
   Fund Summary

    Fund:



     Fidelity&#xae; Blue Chip Value ETF



  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000068175GTF-PRO">
   Investment Objective
  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000068175GTF-PRO">
   Fidelity&#xae; Blue Chip Value ETF seeks long-term growth of capital.
  </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000068175GTF-PRO">
   Fee Table
  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000068175GTF-PRO">

    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 table or example below.


  </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000068175GTF-PRO">
   Shareholder fees
  </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000068175GTF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000068175GTF-PRO">
   Annual Operating Expenses
  </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000068175C000218331"
      decimals="6"
      unitRef="pure">0.0059</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000068175C000218331"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000068175C000218331"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000068175C000218331"
      decimals="6"
      unitRef="pure">0.0059</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000068175GTF-PRO">
   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:
  </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000068175C000218331"
      decimals="0"
      unitRef="usd">60</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000068175C000218331"
      decimals="0"
      unitRef="usd">189</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000068175C000218331"
      decimals="0"
      unitRef="usd">329</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000068175C000218331"
      decimals="0"
      unitRef="usd">738</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000068175GTF-PRO">
    Portfolio Turnover
   </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000068175GTF-PRO">
    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

      54

    % of the average value of its portfolio.
   </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000068175GTF-PRO" decimals="4" unitRef="pure">0.54</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000068175GTF-PRO">
    Principal Investment Strategies
   </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000068175GTF-PRO">

     The fund is an actively managed ETF that operates pursuant to an exemptive order from the Securities and Exchange Commission (Order) and is not required to publicly disclose its complete portfolio holdings each business day. Instead, the fund publishes each business day on its website a "Tracking Basket," which is designed to closely track the daily performance of the fund but is not the fund's actual portfolio. The Tracking Basket is comprised of: (1) select recently disclosed portfolio holdings and/or select securities from the universe from which the fund's investments are selected (Strategy Components); (2) liquid ETFs that convey information about the types of instruments (that are not otherwise fully represented by the Strategy Components) in which the fund invests (Representative ETFs); and (3) cash and cash equivalents. For additional information regarding the Tracking Basket, see "Additional Information about each Fund - Tracking Basket Structure" in the prospectus.
     The fund also publishes each business day on its website the "Tracking Basket Weight Overlap," which is the percentage weight overlap between the holdings of the prior business day's Tracking Basket compared to the holdings of the fund that formed the basis for the fund's calculation of net asset value per share (NAV) at the end of the prior business day. The Tracking Basket Weight Overlap is designed to provide investors with an understanding of how similar the Tracking Basket is to the fund's actual portfolio in percentage terms.
     Normally investing primarily in equity securities.
     Normally investing at least 80% of assets in blue chip companies (companies that, in Fidelity Management &amp; Research Company LLC (FMR)'s view, are well-known, well-established and well-capitalized), which generally have large or medium market capitalizations.
     Investing in companies that FMR believes are undervalued in the marketplace in relation to factors such as assets, sales, earnings, growth potential, or cash flow, or in relation to securities of other companies in the same industry (stocks of these companies are often called "value" stocks).
     Investing in domestic and foreign issuers.
     Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.


   </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000068175GTF-PRO">
    Principal Investment Risks
   </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000068175GTF-PRO">

     Tracking Basket Structure Risk.


     The fund's Tracking Basket structure may affect the price at which shares of the fund trade in the secondary market. Although the Tracking Basket is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the fund at or close to the fund's NAV per share, there is a risk that market prices will vary significantly from NAV. Exchange Traded Funds (ETFs) trading on the basis of a published Tracking Basket may trade at a wider bid-ask spread than ETFs that publish their portfolios on a daily basis, and therefore, may cost investors more to trade. These risks may increase during periods of market disruption or volatility. In addition, although the fund seeks to benefit from keeping its portfolio information secret, market participants may attempt to use the Tracking Basket to identify the fund's trading strategy. If successful, this could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the fund and its shareholders, such as front running the fund's trades of portfolio securities.


     Arbitrage Risk.


     Unlike ETFs that publicly disclose their complete portfolio holdings each business day, the fund provides certain other information intended to allow market participants to estimate the value of positions in fund shares. Although this information is designed to facilitate arbitrage opportunities in fund shares to reduce bid-ask spread and minimize discounts or premiums between the market price and NAV of fund shares, there is no guarantee the fund's arbitrage mechanism will operate as intended and that the fund will not experience wide bid-ask spreads and/or large discounts or premiums to NAV. In addition, market participants may attempt to use the disclosed information to "reverse engineer" the fund's trading strategy, which, if successful, could increase opportunities for predatory trading practices that may have the potential to negatively impact the fund's performance.


     Fluctuation of Net Asset Value and Share Price.


     Shares&#160;may trade at a larger&#160;premium or discount to the&#160;NAV&#160;than shares of other ETFs, including ETFs that make their daily holdings public. The 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. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings.


     Trading Issues.


     The fund has no public trading history and will operate differently from other actively managed ETFs that publish their portfolio holdings on a daily basis. There can be no assurance that an active trading market will develop or be maintained or that the market for fund shares will operate as intended, which could lead to the fund's shares trading at wider spreads and larger premiums and discounts to NAV than other actively managed ETFs that publish their portfolio holdings on a daily basis, particularly during periods of market disruption or volatility. As a result, it may cost investors more to trade fund shares than shares of other ETFs. There is no guarantee that the fund will be able to attract market makers and Authorized Participants. 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.


     Trading Halt Risk.


     There may be circumstances where a security held in the fund's portfolio but not in the Tracking Basket does not have readily available market quotations. If the Adviser determines that such circumstance may affect the reliability of the Tracking Basket as an arbitrage vehicle, that information, along with the identity and weighting of that security in the fund's portfolio, will be publicly disclosed on the fund's website and the Adviser will assess appropriate remedial measures. In these circumstances, market participants may use this information to engage in certain predatory trading practices that may have the potential to harm the fund and its shareholders. In addition, if securities representing 10% or more of the fund's portfolio do not have readily available market quotations, the Adviser would promptly request the Exchange to halt trading on the fund, meaning that investors would not be able to trade their shares. Trading may also be halted in other circumstances, for example, due to market conditions.


     Authorized Participant Concentration Risk.


     The fund may have a limited number of financial institutions that act as authorized participants, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those authorized participants do not engage in creation and redemption orders, there may be a significantly diminished trading market for fund shares or fund shares may trade at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The authorized participant concentration risk may be heightened due to the fact that the fund does not disclose its portfolio holdings daily, unlike certain other actively managed ETFs, and could be greater during market disruptions or periods of volatility.


     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.


     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.


     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.


     "Value" Investing.


     "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.


     Mid Cap Investing.


     The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.



      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.




      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
      .


      &#160;
      You could lose money by investing in the fund.



   </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000068175GTF-PRO">
      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.
     </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000068175GTF-PRO">
      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
      .
     </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000068175GTF-PRO">
      &#160;
      You could lose money by investing in the fund.
     </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000068175GTF-PRO">
    Performance
   </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000068175GTF-PRO">

     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 over various periods of time.

      The index description appears in the "Additional Index Information" section of the prospectus.

      Past performance (before and after taxes) is not an indication of future performance.



     Visit

       www.fidelity.com

     for more recent performance information.


   </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000068175GTF-PRO">
      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 over various periods of time.
     </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000068175GTF-PRO">
      Past performance (before and after taxes) is not an indication of future performance.
     </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000068175GTF-PRO">
       www.fidelity.com
     </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000068175GTF-PRO">
    Year-by-Year Returns
   </rr:BarChartHeading>
    <rr:AnnualReturn2021
      contextRef="S000068175C000218331"
      decimals="INF"
      unitRef="pure">0.2612</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000068175GTF-PRO">
        &#160;&#160;&#160;Highest Quarter Return
      </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000068175GTF-PRO" decimals="4" unitRef="pure">0.1149</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000068175GTF-PRO">2021-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000068175GTF-PRO">
        &#160;&#160;&#160;Lowest Quarter Return
      </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000068175GTF-PRO" decimals="4" unitRef="pure">-0.0110</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000068175GTF-PRO">2021-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000068175GTF-PRO">
        &#160;&#160;&#160;Year-to-Date Return
      </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000068175GTF-PRO" decimals="4" unitRef="pure">-0.1319</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000068175GTF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000068175GTF-PRO">
    Average Annual Returns
   </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000068175GTF-PRO">

     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.

   </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000068175GTF-PRO">
     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.
    </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000068175GTF-PRO">
      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).
    </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000068175GTF-PRO">
      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.
    </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000068175C000218331ReturnBeforeTaxes">
       Return Before Taxes
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068175C000218331ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2612</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068175C000218331ReturnBeforeTaxes"
      decimals="4"
      id="footnoteETC-PROS000068175AAR_C000218331_RBT"
      unitRef="pure">0.3070</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068175C000218331AfterTaxesOnDistributions">
       Return After Taxes on Distributions
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068175C000218331AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2490</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068175C000218331AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteETC-PROS000068175AAR_C000218331_ATD"
      unitRef="pure">0.2981</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068175C000218331AfterTaxesOnDistributionsAndSales">
       Return After Taxes on Distributions and Sale of Fund Shares
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068175C000218331AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1583</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068175C000218331AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteETC-PROS000068175AAR_C000218331_ATDS"
      unitRef="pure">0.2357</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068175IndexRS005GTF-PRO">
       Russell 1000&#xae; Value Index
      </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068175IndexRS005GTF-PRO"
      decimals="4"
      unitRef="pure">0.2516</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068175IndexRS005GTF-PRO"
      decimals="4"
      id="footnoteETC-PROS000068175AAR_A_IndexRS005"
      unitRef="pure">0.2941</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000068175GTF-PRO">2020-06-02</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000070233ETC-PRO">
    Fund Summary

     Fund:



      Fidelity&#xae; Growth Opportunities ETF



   </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000070233ETC-PRO">
    Investment Objective
   </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000070233ETC-PRO">
    Fidelity&#xae; Growth Opportunities ETF seeks long-term growth of capital.
   </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000070233ETC-PRO">
    Fee Table
   </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000070233ETC-PRO">

     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 table or example below.


   </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000070233ETC-PRO">
    Shareholder fees
   </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000070233ETC-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000070233ETC-PRO">
    Annual Operating Expenses
   </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000070233C000223344"
      decimals="6"
      unitRef="pure">0.0059</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000070233C000223344"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000070233C000223344"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000070233C000223344"
      decimals="6"
      unitRef="pure">0.0059</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000070233ETC-PRO">
    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:
   </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000070233C000223344"
      decimals="0"
      unitRef="usd">60</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000070233C000223344"
      decimals="0"
      unitRef="usd">189</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000070233C000223344"
      decimals="0"
      unitRef="usd">329</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000070233C000223344"
      decimals="0"
      unitRef="usd">738</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000070233ETC-PRO">
     Portfolio Turnover
    </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000070233ETC-PRO">
     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

      99

     % of the average value of its portfolio.
    </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000070233ETC-PRO" decimals="4" unitRef="pure">0.99</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000070233ETC-PRO">
     Principal Investment Strategies
    </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000070233ETC-PRO">

      The fund is an actively managed ETF that operates pursuant to an exemptive order from the Securities and Exchange Commission (Order) and is not required to publicly disclose its complete portfolio holdings each business day. Instead, the fund publishes each business day on its website a "Tracking Basket," which is designed to closely track the daily performance of the fund but is not the fund's actual portfolio. The Tracking Basket is comprised of: (1) select recently disclosed portfolio holdings and/or select securities from the universe from which the fund's investments are selected (Strategy Components); (2) liquid ETFs that convey information about the types of instruments (that are not otherwise fully represented by the Strategy Components) in which the fund invests (Representative ETFs); and (3) cash and cash equivalents. For additional information regarding the Tracking Basket, see "Additional Information about each Fund - Tracking Basket Structure" in the prospectus.
      The fund also publishes each business day on its website the "Tracking Basket Weight Overlap," which is the percentage weight overlap between the holdings of the prior business day's Tracking Basket compared to the holdings of the fund that formed the basis for the fund's calculation of net asset value per share (NAV) at the end of the prior business day. The Tracking Basket Weight Overlap is designed to provide investors with an understanding of how similar the Tracking Basket is to the fund's actual portfolio in percentage terms.
      Normally investing primarily in equity securities.
      Investing in companies that Fidelity Management &amp; Research Company LLC (FMR) believes have above-average growth potential (stocks of these companies are often called "growth" stocks).
      Investing in domestic and foreign issuers.
      Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.


    </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000070233ETC-PRO">
     Principal Investment Risks
    </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000070233ETC-PRO">

      Tracking Basket Structure Risk.


      The fund's Tracking Basket structure may affect the price at which shares of the fund trade in the secondary market. Although the Tracking Basket is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the fund at or close to the fund's NAV per share, there is a risk that market prices will vary significantly from NAV. Exchange Traded Funds (ETFs) trading on the basis of a published Tracking Basket may trade at a wider bid-ask spread than ETFs that publish their portfolios on a daily basis, and therefore, may cost investors more to trade. These risks may increase during periods of market disruption or volatility. In addition, although the fund seeks to benefit from keeping its portfolio information secret, market participants may attempt to use the Tracking Basket to identify the fund's trading strategy. If successful, this could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the fund and its shareholders, such as front running the fund's trades of portfolio securities.


      Arbitrage Risk.


      Unlike ETFs that publicly disclose their complete portfolio holdings each business day, the fund provides certain other information intended to allow market participants to estimate the value of positions in fund shares. Although this information is designed to facilitate arbitrage opportunities in fund shares to reduce bid-ask spread and minimize discounts or premiums between the market price and NAV of fund shares, there is no guarantee the fund's arbitrage mechanism will operate as intended and that the fund will not experience wide bid-ask spreads and/or large discounts or premiums to NAV. In addition, market participants may attempt to use the disclosed information to "reverse engineer" the fund's trading strategy, which, if successful, could increase opportunities for predatory trading practices that may have the potential to negatively impact the fund's performance.


      Fluctuation of Net Asset Value and Share Price.


      Shares&#160;may trade at a larger&#160;premium or discount to the&#160;NAV&#160;than shares of other ETFs, including ETFs that make their daily holdings public. The 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. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings.


      Trading Issues.


      The fund has no public trading history and will operate differently from other actively managed ETFs that publish their portfolio holdings on a daily basis. There can be no assurance that an active trading market will develop or be maintained or that the market for fund shares will operate as intended, which could lead to the fund's shares trading at wider spreads and larger premiums and discounts to NAV than other actively managed ETFs that publish their portfolio holdings on a daily basis, particularly during periods of market disruption or volatility. As a result, it may cost investors more to trade fund shares than shares of other ETFs. There is no guarantee that the fund will be able to attract market makers and Authorized Participants. 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.


      Trading Halt Risk.


      There may be circumstances where a security held in the fund's portfolio but not in the Tracking Basket does not have readily available market quotations. If the Adviser determines that such circumstance may affect the reliability of the Tracking Basket as an arbitrage vehicle, that information, along with the identity and weighting of that security in the fund's portfolio, will be publicly disclosed on the fund's website and the Adviser will assess appropriate remedial measures. In these circumstances, market participants may use this information to engage in certain predatory trading practices that may have the potential to harm the fund and its shareholders. In addition, if securities representing 10% or more of the fund's portfolio do not have readily available market quotations, the Adviser would promptly request the Exchange to halt trading on the fund, meaning that investors would not be able to trade their shares. Trading may also be halted in other circumstances, for example, due to market conditions.


      Authorized Participant Concentration Risk.


      The fund may have a limited number of financial institutions that act as authorized participants, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those authorized participants do not engage in creation and redemption orders, there may be a significantly diminished trading market for fund shares or fund shares may trade at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The authorized participant concentration risk may be heightened due to the fact that the fund does not disclose its portfolio holdings daily, unlike certain other actively managed ETFs, and could be greater during market disruptions or periods of volatility.


      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.


      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.


      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.


      "Growth" Investing.


      "Growth" stocks can react differently to issuer, political, market, and economic developments than the market as a whole and other types of stocks. "Growth" stocks tend to be more expensive relative to their earnings or assets compared to other types of stocks. As a result, "growth" stocks tend to be sensitive to changes in their earnings and more volatile than other types of stocks.
       &#160; &#160;


      Mid Cap Investing.


      The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.



       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.




       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
       .


       &#160;
       You could lose money by investing in the fund.



    </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000070233ETC-PRO">
       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.
      </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000070233ETC-PRO">
       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
       .
      </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000070233ETC-PRO">
       &#160;
       You could lose money by investing in the fund.
      </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000070233ETC-PRO">
     Performance
    </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000070233ETC-PRO">


       Performance history will be available for the fund after the fund has been in operation for one calendar year.


    </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess contextRef="S000070233ETC-PRO">
       Performance history will be available for the fund after the fund has been in operation for one calendar year.
      </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading contextRef="S000070234ETC-PRO">
     Fund Summary

      Fund:



       Fidelity&#xae; Magellan&#xae; ETF



    </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000070234ETC-PRO">
     Investment Objective
    </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000070234ETC-PRO">
     Fidelity&#xae; Magellan&#xae; ETF seeks long-term growth of capital.
    </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000070234ETC-PRO">
     Fee Table
    </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000070234ETC-PRO">

      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 table or example below.


    </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000070234ETC-PRO">
     Shareholder fees
    </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000070234ETC-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000070234ETC-PRO">
     Annual Operating Expenses
    </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000070234C000223345"
      decimals="6"
      unitRef="pure">0.0059</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000070234C000223345"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000070234C000223345"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000070234C000223345"
      decimals="6"
      unitRef="pure">0.0059</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000070234ETC-PRO">
     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:
    </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000070234C000223345"
      decimals="0"
      unitRef="usd">60</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000070234C000223345"
      decimals="0"
      unitRef="usd">189</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000070234C000223345"
      decimals="0"
      unitRef="usd">329</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000070234C000223345"
      decimals="0"
      unitRef="usd">738</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000070234ETC-PRO">
      Portfolio Turnover
     </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000070234ETC-PRO">
      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

       68

      % of the average value of its portfolio.
     </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000070234ETC-PRO" decimals="4" unitRef="pure">0.68</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000070234ETC-PRO">
      Principal Investment Strategies
     </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000070234ETC-PRO">

       The fund is an actively managed ETF that operates pursuant to an exemptive order from the Securities and Exchange Commission (Order) and is not required to publicly disclose its complete portfolio holdings each business day. Instead, the fund publishes each business day on its website a "Tracking Basket," which is designed to closely track the daily performance of the fund but is not the fund's actual portfolio. The Tracking Basket is comprised of: (1) select recently disclosed portfolio holdings and/or select securities from the universe from which the fund's investments are selected (Strategy Components); (2) liquid ETFs that convey information about the types of instruments (that are not otherwise fully represented by the Strategy Components) in which the fund invests (Representative ETFs); and (3) cash and cash equivalents. For additional information regarding the Tracking Basket, see "Additional Information about each Fund - Tracking Basket Structure" in the prospectus.
       The fund also publishes each business day on its website the "Tracking Basket Weight Overlap," which is the percentage weight overlap between the holdings of the prior business day's Tracking Basket compared to the holdings of the fund that formed the basis for the fund's calculation of net asset value per share (NAV) at the end of the prior business day. The Tracking Basket Weight Overlap is designed to provide investors with an understanding of how similar the Tracking Basket is to the fund's actual portfolio in percentage terms.
       Normally investing primarily in equity securities.
       Investing in either "growth" stocks or "value" stocks or both.
       Investing in domestic and foreign issuers.
       Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.


     </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000070234ETC-PRO">
      Principal Investment Risks
     </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000070234ETC-PRO">

       Tracking Basket Structure Risk.


       The fund's Tracking Basket structure may affect the price at which shares of the fund trade in the secondary market. Although the Tracking Basket is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the fund at or close to the fund's NAV per share, there is a risk that market prices will vary significantly from NAV. Exchange Traded Funds (ETFs) trading on the basis of a published Tracking Basket may trade at a wider bid-ask spread than ETFs that publish their portfolios on a daily basis, and therefore, may cost investors more to trade. These risks may increase during periods of market disruption or volatility. In addition, although the fund seeks to benefit from keeping its portfolio information secret, market participants may attempt to use the Tracking Basket to identify the fund's trading strategy. If successful, this could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the fund and its shareholders, such as front running the fund's trades of portfolio securities.


       Arbitrage Risk.


       Unlike ETFs that publicly disclose their complete portfolio holdings each business day, the fund provides certain other information intended to allow market participants to estimate the value of positions in fund shares. Although this information is designed to facilitate arbitrage opportunities in fund shares to reduce bid-ask spread and minimize discounts or premiums between the market price and NAV of fund shares, there is no guarantee the fund's arbitrage mechanism will operate as intended and that the fund will not experience wide bid-ask spreads and/or large discounts or premiums to NAV. In addition, market participants may attempt to use the disclosed information to "reverse engineer" the fund's trading strategy, which, if successful, could increase opportunities for predatory trading practices that may have the potential to negatively impact the fund's performance.


       Fluctuation of Net Asset Value and Share Price.


       Shares&#160;may trade at a larger&#160;premium or discount to the&#160;NAV&#160;than shares of other ETFs, including ETFs that make their daily holdings public. The 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. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings.


       Trading Issues.


       The fund has no public trading history and will operate differently from other actively managed ETFs that publish their portfolio holdings on a daily basis. There can be no assurance that an active trading market will develop or be maintained or that the market for fund shares will operate as intended, which could lead to the fund's shares trading at wider spreads and larger premiums and discounts to NAV than other actively managed ETFs that publish their portfolio holdings on a daily basis, particularly during periods of market disruption or volatility. As a result, it may cost investors more to trade fund shares than shares of other ETFs. There is no guarantee that the fund will be able to attract market makers and Authorized Participants. 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.


       Trading Halt Risk.


       There may be circumstances where a security held in the fund's portfolio but not in the Tracking Basket does not have readily available market quotations. If the Adviser determines that such circumstance may affect the reliability of the Tracking Basket as an arbitrage vehicle, that information, along with the identity and weighting of that security in the fund's portfolio, will be publicly disclosed on the fund's website and the Adviser will assess appropriate remedial measures. In these circumstances, market participants may use this information to engage in certain predatory trading practices that may have the potential to harm the fund and its shareholders. In addition, if securities representing 10% or more of the fund's portfolio do not have readily available market quotations, the Adviser would promptly request the Exchange to halt trading on the fund, meaning that investors would not be able to trade their shares. Trading may also be halted in other circumstances, for example, due to market conditions.


       Authorized Participant Concentration Risk.


       The fund may have a limited number of financial institutions that act as authorized participants, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those authorized participants do not engage in creation and redemption orders, there may be a significantly diminished trading market for fund shares or fund shares may trade at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The authorized participant concentration risk may be heightened due to the fact that the fund does not disclose its portfolio holdings daily, unlike certain other actively managed ETFs, and could be greater during market disruptions or periods of volatility.


       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.


       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.


       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.


       "Growth" Investing.


        "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.
       &#160; &#160; &#160;


       "Value" Investing.


       "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.


       ;"

        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.




        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
        .


        &#160;
        You could lose money by investing in the fund.



     </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000070234ETC-PRO">
        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.
       </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000070234ETC-PRO">
        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
        .
       </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000070234ETC-PRO">
        &#160;
        You could lose money by investing in the fund.
       </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000070234ETC-PRO">
      Performance
     </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000070234ETC-PRO">


        Performance history will be available for the fund after the fund has been in operation for one calendar year.


     </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess contextRef="S000070234ETC-PRO">
        Performance history will be available for the fund after the fund has been in operation for one calendar year.
       </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading contextRef="S000068174GTF-PRO">
      Fund Summary

       Fund:



        Fidelity&#xae; New Millennium ETF



     </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000068174GTF-PRO">
      Investment Objective
     </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000068174GTF-PRO">
      Fidelity&#xae; New Millennium ETF seeks long-term growth of capital.
     </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000068174GTF-PRO">
      Fee Table
     </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000068174GTF-PRO">

       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 table or example below.


     </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000068174GTF-PRO">
      Shareholder fees
     </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000068174GTF-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000068174GTF-PRO">
      Annual Operating Expenses
     </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000068174C000218330"
      decimals="6"
      unitRef="pure">0.0059</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000068174C000218330"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000068174C000218330"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000068174C000218330"
      decimals="6"
      unitRef="pure">0.0059</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000068174GTF-PRO">
      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:
     </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000068174C000218330"
      decimals="0"
      unitRef="usd">60</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000068174C000218330"
      decimals="0"
      unitRef="usd">189</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000068174C000218330"
      decimals="0"
      unitRef="usd">329</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000068174C000218330"
      decimals="0"
      unitRef="usd">738</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000068174GTF-PRO">
       Portfolio Turnover
      </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000068174GTF-PRO">
       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

        36

       % of the average value of its portfolio.
      </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000068174GTF-PRO" decimals="4" unitRef="pure">0.36</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000068174GTF-PRO">
       Principal Investment Strategies
      </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000068174GTF-PRO">

        The fund is an actively managed ETF that operates pursuant to an exemptive order from the Securities and Exchange Commission (Order) and is not required to publicly disclose its complete portfolio holdings each business day. Instead, the fund publishes each business day on its website a "Tracking Basket," which is designed to closely track the daily performance of the fund but is not the fund's actual portfolio. The Tracking Basket is comprised of: (1) select recently disclosed portfolio holdings and/or select securities from the universe from which the fund's investments are selected (Strategy Components); (2) liquid ETFs that convey information about the types of instruments (that are not otherwise fully represented by the Strategy Components) in which the fund invests (Representative ETFs); and (3) cash and cash equivalents. For additional information regarding the Tracking Basket, see "Additional Information about each Fund - Tracking Basket Structure" in the prospectus.
        The fund also publishes each business day on its website the "Tracking Basket Weight Overlap," which is the percentage weight overlap between the holdings of the prior business day's Tracking Basket compared to the holdings of the fund that formed the basis for the fund's calculation of net asset value per share (NAV) at the end of the prior business day. The Tracking Basket Weight Overlap is designed to provide investors with an understanding of how similar the Tracking Basket is to the fund's actual portfolio in percentage terms.
        Normally investing primarily in equity securities.
        Identifying early signs of long-term changes in the marketplace and focusing on those companies that may benefit from opportunities created by these changes by examining technological advances, product innovation, economic plans, demographics, social attitudes, and other factors, which can lead to investments in small and medium-sized companies.
        Investing in domestic and foreign issuers.
        Investing in either "growth" stocks or "value" stocks or both.
        Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.


      </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000068174GTF-PRO">
       Principal Investment Risks
      </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000068174GTF-PRO">

        Tracking Basket Structure Risk.


        The fund's Tracking Basket structure may affect the price at which shares of the fund trade in the secondary market. Although the Tracking Basket is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the fund at or close to the fund's NAV per share, there is a risk that market prices will vary significantly from NAV. Exchange Traded Funds (ETFs) trading on the basis of a published Tracking Basket may trade at a wider bid-ask spread than ETFs that publish their portfolios on a daily basis, and therefore, may cost investors more to trade. These risks may increase during periods of market disruption or volatility. In addition, although the fund seeks to benefit from keeping its portfolio information secret, market participants may attempt to use the Tracking Basket to identify the fund's trading strategy. If successful, this could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the fund and its shareholders, such as front running the fund's trades of portfolio securities.


        Arbitrage Risk.


        Unlike ETFs that publicly disclose their complete portfolio holdings each business day, the fund provides certain other information intended to allow market participants to estimate the value of positions in fund shares. Although this information is designed to facilitate arbitrage opportunities in fund shares to reduce bid-ask spread and minimize discounts or premiums between the market price and NAV of fund shares, there is no guarantee the fund's arbitrage mechanism will operate as intended and that the fund will not experience wide bid-ask spreads and/or large discounts or premiums to NAV. In addition, market participants may attempt to use the disclosed information to "reverse engineer" the fund's trading strategy, which, if successful, could increase opportunities for predatory trading practices that may have the potential to negatively impact the fund's performance.


        Fluctuation of Net Asset Value and Share Price.


        Shares&#160;may trade at a larger&#160;premium or discount to the&#160;NAV&#160;than shares of other ETFs, including ETFs that make their daily holdings public. The 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. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings.


        Trading Issues.


        The fund has no public trading history and will operate differently from other actively managed ETFs that publish their portfolio holdings on a daily basis. There can be no assurance that an active trading market will develop or be maintained or that the market for fund shares will operate as intended, which could lead to the fund's shares trading at wider spreads and larger premiums and discounts to NAV than other actively managed ETFs that publish their portfolio holdings on a daily basis, particularly during periods of market disruption or volatility. As a result, it may cost investors more to trade fund shares than shares of other ETFs. There is no guarantee that the fund will be able to attract market makers and Authorized Participants. 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.


        Trading Halt Risk.


        There may be circumstances where a security held in the fund's portfolio but not in the Tracking Basket does not have readily available market quotations. If the Adviser determines that such circumstance may affect the reliability of the Tracking Basket as an arbitrage vehicle, that information, along with the identity and weighting of that security in the fund's portfolio, will be publicly disclosed on the fund's website and the Adviser will assess appropriate remedial measures. In these circumstances, market participants may use this information to engage in certain predatory trading practices that may have the potential to harm the fund and its shareholders. In addition, if securities representing 10% or more of the fund's portfolio do not have readily available market quotations, the Adviser would promptly request the Exchange to halt trading on the fund, meaning that investors would not be able to trade their shares. Trading may also be halted in other circumstances, for example, due to market conditions.


        Authorized Participant Concentration Risk.


        The fund may have a limited number of financial institutions that act as authorized participants, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those authorized participants do not engage in creation and redemption orders, there may be a significantly diminished trading market for fund shares or fund shares may trade at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The authorized participant concentration risk may be heightened due to the fact that the fund does not disclose its portfolio holdings daily, unlike certain other actively managed ETFs, and could be greater during market disruptions or periods of volatility.


        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.


        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.


        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.


        "Growth" Investing.


         "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.
        &#160; &#160; &#160;


        "Value" Investing.


        "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.


        Mid Cap Investing.


        The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.



         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.




         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
         .


         &#160;
         You could lose money by investing in the fund.



      </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000068174GTF-PRO">
         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.
        </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000068174GTF-PRO">
         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
         .
        </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000068174GTF-PRO">
         &#160;
         You could lose money by investing in the fund.
        </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000068174GTF-PRO">
       Performance
      </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000068174GTF-PRO">

        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 over various periods of time.

         The index description appears in the "Additional Index Information" section of the prospectus.

         Past performance (before and after taxes) is not an indication of future performance.



        Visit

          www.fidelity.com

        for more recent performance information.


      </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000068174GTF-PRO">
         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 over various periods of time.
        </rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000068174GTF-PRO">
         Past performance (before and after taxes) is not an indication of future performance.
        </rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000068174GTF-PRO">
          www.fidelity.com
        </rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000068174GTF-PRO">
       Year-by-Year Returns
      </rr:BarChartHeading>
    <rr:AnnualReturn2021
      contextRef="S000068174C000218330"
      decimals="INF"
      unitRef="pure">0.2446</rr:AnnualReturn2021>
    <rr:HighestQuarterlyReturnLabel contextRef="S000068174GTF-PRO">
           &#160;&#160;&#160;Highest Quarter Return
         </rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn contextRef="S000068174GTF-PRO" decimals="4" unitRef="pure">0.1409</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000068174GTF-PRO">2021-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000068174GTF-PRO">
           &#160;&#160;&#160;Lowest Quarter Return
         </rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn contextRef="S000068174GTF-PRO" decimals="4" unitRef="pure">-0.0182</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000068174GTF-PRO">2021-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:YearToDateReturnLabel contextRef="S000068174GTF-PRO">
           &#160;&#160;&#160;Year-to-Date Return
         </rr:YearToDateReturnLabel>
    <rr:BarChartYearToDateReturn contextRef="S000068174GTF-PRO" decimals="4" unitRef="pure">-0.1125</rr:BarChartYearToDateReturn>
    <rr:BarChartYearToDateReturnDate contextRef="S000068174GTF-PRO">2022-09-30</rr:BarChartYearToDateReturnDate>
    <rr:PerformanceTableHeading contextRef="S000068174GTF-PRO">
       Average Annual Returns
      </rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000068174GTF-PRO">

        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.

      </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000068174GTF-PRO">
        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.
       </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000068174GTF-PRO">
         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).
       </rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000068174GTF-PRO">
         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.
       </rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000068174C000218330ReturnBeforeTaxes">
          Return Before Taxes
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068174C000218330ReturnBeforeTaxes"
      decimals="4"
      unitRef="pure">0.2446</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068174C000218330ReturnBeforeTaxes"
      decimals="4"
      id="footnoteETC-PROS000068174AAR_C000218330_RBT"
      unitRef="pure">0.3041</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068174C000218330AfterTaxesOnDistributions">
          Return After Taxes on Distributions
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068174C000218330AfterTaxesOnDistributions"
      decimals="4"
      unitRef="pure">0.2393</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068174C000218330AfterTaxesOnDistributions"
      decimals="4"
      id="footnoteETC-PROS000068174AAR_C000218330_ATD"
      unitRef="pure">0.2982</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068174C000218330AfterTaxesOnDistributionsAndSales">
          Return After Taxes on Distributions and Sale of Fund Shares
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068174C000218330AfterTaxesOnDistributionsAndSales"
      decimals="4"
      unitRef="pure">0.1480</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068174C000218330AfterTaxesOnDistributionsAndSales"
      decimals="4"
      id="footnoteETC-PROS000068174AAR_C000218330_ATDS"
      unitRef="pure">0.2346</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000068174IndexSP001GTF-PRO">
          S&amp;P 500&#xae; Index
         </rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068174IndexSP001GTF-PRO"
      decimals="4"
      unitRef="pure">0.2871</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068174IndexSP001GTF-PRO"
      decimals="4"
      id="footnoteETC-PROS000068174AAR_A_IndexSP001"
      unitRef="pure">0.3379</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000068174GTF-PRO">2020-06-02</rr:AnnualReturnInceptionDate>
    <rr:RiskReturnHeading contextRef="S000070235ETC-PRO">
       Fund Summary

        Fund:



         Fidelity&#xae; Real Estate Investment ETF



      </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000070235ETC-PRO">
       Investment Objective
      </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000070235ETC-PRO">
       Fidelity&#xae; Real Estate Investment ETF seeks above-average income and long-term capital growth, consistent with reasonable investment risk.
      </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000070235ETC-PRO">
       Fee Table
      </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000070235ETC-PRO">

        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 table or example below.


      </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000070235ETC-PRO">
       Shareholder fees
      </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000070235ETC-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000070235ETC-PRO">
       Annual Operating Expenses
      </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000070235C000223346"
      decimals="6"
      unitRef="pure">0.0059</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000070235C000223346"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000070235C000223346"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000070235C000223346"
      decimals="6"
      unitRef="pure">0.0059</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000070235ETC-PRO">
       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:
      </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000070235C000223346"
      decimals="0"
      unitRef="usd">60</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000070235C000223346"
      decimals="0"
      unitRef="usd">189</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000070235C000223346"
      decimals="0"
      unitRef="usd">329</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000070235C000223346"
      decimals="0"
      unitRef="usd">738</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000070235ETC-PRO">
        Portfolio Turnover
       </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000070235ETC-PRO">
        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

         24

        % of the average value of its portfolio.
       </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000070235ETC-PRO" decimals="4" unitRef="pure">0.24</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000070235ETC-PRO">
        Principal Investment Strategies
       </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000070235ETC-PRO">

         The fund is an actively managed ETF that operates pursuant to an exemptive order from the Securities and Exchange Commission (Order) and is not required to publicly disclose its complete portfolio holdings each business day. Instead, the fund publishes each business day on its website a "Tracking Basket," which is designed to closely track the daily performance of the fund but is not the fund's actual portfolio. The Tracking Basket is comprised of: (1) select recently disclosed portfolio holdings and/or select securities from the universe from which the fund's investments are selected (Strategy Components); (2) liquid ETFs that convey information about the types of instruments (that are not otherwise fully represented by the Strategy Components) in which the fund invests (Representative ETFs); and (3) cash and cash equivalents. For additional information regarding the Tracking Basket, see "Additional Information about each Fund - Tracking Basket Structure" in the prospectus.
         The fund also publishes each business day on its website the "Tracking Basket Weight Overlap," which is the percentage weight overlap between the holdings of the prior business day's Tracking Basket compared to the holdings of the fund that formed the basis for the fund's calculation of net asset value per share (NAV) at the end of the prior business day. The Tracking Basket Weight Overlap is designed to provide investors with an understanding of how similar the Tracking Basket is to the fund's actual portfolio in percentage terms.
         Normally investing primarily in equity securities.


           Normally investing at least 80% of assets in securities of companies principally engaged in the real estate industry and other real estate related investments.

         Investing in domestic and foreign issuers.
         Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.


       </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration contextRef="S000070235ETC-PRO">
           Normally investing at least 80% of assets in securities of companies principally engaged in the real estate industry and other real estate related investments.
          </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading contextRef="S000070235ETC-PRO">
        Principal Investment Risks
       </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000070235ETC-PRO">

         Tracking Basket Structure Risk.


         The fund's Tracking Basket structure may affect the price at which shares of the fund trade in the secondary market. Although the Tracking Basket is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the fund at or close to the fund's NAV per share, there is a risk that market prices will vary significantly from NAV. Exchange Traded Funds (ETFs) trading on the basis of a published Tracking Basket may trade at a wider bid-ask spread than ETFs that publish their portfolios on a daily basis, and therefore, may cost investors more to trade. These risks may increase during periods of market disruption or volatility. In addition, although the fund seeks to benefit from keeping its portfolio information secret, market participants may attempt to use the Tracking Basket to identify the fund's trading strategy. If successful, this could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the fund and its shareholders, such as front running the fund's trades of portfolio securities.


         Arbitrage Risk.


         Unlike ETFs that publicly disclose their complete portfolio holdings each business day, the fund provides certain other information intended to allow market participants to estimate the value of positions in fund shares. Although this information is designed to facilitate arbitrage opportunities in fund shares to reduce bid-ask spread and minimize discounts or premiums between the market price and NAV of fund shares, there is no guarantee the fund's arbitrage mechanism will operate as intended and that the fund will not experience wide bid-ask spreads and/or large discounts or premiums to NAV. In addition, market participants may attempt to use the disclosed information to "reverse engineer" the fund's trading strategy, which, if successful, could increase opportunities for predatory trading practices that may have the potential to negatively impact the fund's performance.


         Fluctuation of Net Asset Value and Share Price.


         Shares&#160;may trade at a larger&#160;premium or discount to the&#160;NAV&#160;than shares of other ETFs, including ETFs that make their daily holdings public. The 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. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings.


         Trading Issues.


         The fund has no public trading history and will operate differently from other actively managed ETFs that publish their portfolio holdings on a daily basis. There can be no assurance that an active trading market will develop or be maintained or that the market for fund shares will operate as intended, which could lead to the fund's shares trading at wider spreads and larger premiums and discounts to NAV than other actively managed ETFs that publish their portfolio holdings on a daily basis, particularly during periods of market disruption or volatility. As a result, it may cost investors more to trade fund shares than shares of other ETFs. There is no guarantee that the fund will be able to attract market makers and Authorized Participants. 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.


         Trading Halt Risk.


         There may be circumstances where a security held in the fund's portfolio but not in the Tracking Basket does not have readily available market quotations. If the Adviser determines that such circumstance may affect the reliability of the Tracking Basket as an arbitrage vehicle, that information, along with the identity and weighting of that security in the fund's portfolio, will be publicly disclosed on the fund's website and the Adviser will assess appropriate remedial measures. In these circumstances, market participants may use this information to engage in certain predatory trading practices that may have the potential to harm the fund and its shareholders. In addition, if securities representing 10% or more of the fund's portfolio do not have readily available market quotations, the Adviser would promptly request the Exchange to halt trading on the fund, meaning that investors would not be able to trade their shares. Trading may also be halted in other circumstances, for example, due to market conditions.


         Authorized Participant Concentration Risk.


         The fund may have a limited number of financial institutions that act as authorized participants, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those authorized participants do not engage in creation and redemption orders, there may be a significantly diminished trading market for fund shares or fund shares may trade at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The authorized participant concentration risk may be heightened due to the fact that the fund does not disclose its portfolio holdings daily, unlike certain other actively managed ETFs, and could be greater during market disruptions or periods of volatility.


         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.


         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.


         Real Estate Industry Concentration.


         Changes in real estate values or economic downturns can have a significant negative effect on issuers in the real estate industry. The value of securities of issuers in the real estate industry can be affected by changes in real estate values and rental income, property taxes, interest rates, tax and regulatory requirements, and the management skill and creditworthiness of the issuer.


         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.


         Mid Cap Investing.


         The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.



          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.




          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
          .


          &#160;
          You could lose money by investing in the fund.



       </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000070235ETC-PRO">
          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.
         </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000070235ETC-PRO">
          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
          .
         </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000070235ETC-PRO">
          &#160;
          You could lose money by investing in the fund.
         </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000070235ETC-PRO">
        Performance
       </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000070235ETC-PRO">


          Performance history will be available for the fund after the fund has been in operation for one calendar year.


       </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess contextRef="S000070235ETC-PRO">
          Performance history will be available for the fund after the fund has been in operation for one calendar year.
         </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading contextRef="S000070236ETC-PRO">
        Fund Summary

         Fund:



          Fidelity&#xae; Small-Mid Cap Opportunities ETF



       </rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000070236ETC-PRO">
        Investment Objective
       </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000070236ETC-PRO">
        Fidelity&#xae; Small-Mid Cap Opportunities ETF seeks long-term growth of capital.
       </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000070236ETC-PRO">
        Fee Table
       </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000070236ETC-PRO">

         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 table or example below.


       </rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000070236ETC-PRO">
        Shareholder fees
       </rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther contextRef="S000070236ETC-PRO" decimals="0" unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000070236ETC-PRO">
        Annual Operating Expenses
       </rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000070236C000223347"
      decimals="6"
      id="footnoteETC-PROAOE_A_MF"
      unitRef="pure">0.0060</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000070236C000223347"
      decimals="6"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000070236C000223347"
      decimals="6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000070236C000223347"
      decimals="6"
      unitRef="pure">0.0060</rr:ExpensesOverAssets>
    <rr:ExpensesRestatedToReflectCurrent contextRef="S000070236ETC-PRO">
         Based on historical expenses, adjusted to reflect current fees.
        </rr:ExpensesRestatedToReflectCurrent>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000070236ETC-PRO">
        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:
       </rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000070236C000223347"
      decimals="0"
      unitRef="usd">61</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000070236C000223347"
      decimals="0"
      unitRef="usd">192</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000070236C000223347"
      decimals="0"
      unitRef="usd">335</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000070236C000223347"
      decimals="0"
      unitRef="usd">750</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000070236ETC-PRO">
         Portfolio Turnover
        </rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000070236ETC-PRO">
         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

          42

         % of the average value of its portfolio.
        </rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate contextRef="S000070236ETC-PRO" decimals="4" unitRef="pure">0.42</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000070236ETC-PRO">
         Principal Investment Strategies
        </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000070236ETC-PRO">

          The fund is an actively managed ETF that operates pursuant to an exemptive order from the Securities and Exchange Commission (Order) and is not required to publicly disclose its complete portfolio holdings each business day. Instead, the fund publishes each business day on its website a "Tracking Basket," which is designed to closely track the daily performance of the fund but is not the fund's actual portfolio. The Tracking Basket is comprised of: (1) select recently disclosed portfolio holdings and/or select securities from the universe from which the fund's investments are selected (Strategy Components); (2) liquid ETFs that convey information about the types of instruments (that are not otherwise fully represented by the Strategy Components) in which the fund invests (Representative ETFs); and (3) cash and cash equivalents. For additional information regarding the Tracking Basket, see "Additional Information about each Fund - Tracking Basket Structure" in the prospectus.
          The fund also publishes each business day on its website the "Tracking Basket Weight Overlap," which is the percentage weight overlap between the holdings of the prior business day's Tracking Basket compared to the holdings of the fund that formed the basis for the fund's calculation of net asset value per share (NAV) at the end of the prior business day. The Tracking Basket Weight Overlap is designed to provide investors with an understanding of how similar the Tracking Basket is to the fund's actual portfolio in percentage terms.
          Normally investing primarily in equity securities.
          Normally investing at least 80% of assets in securities of companies with small to medium market capitalizations (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the Russell 2500TM Index.
          Investing in domestic and foreign issuers.
          Investing in either "growth" stocks or "value" stocks or both.
          Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, and quantitative analysis to select investments


        </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000070236ETC-PRO">
         Principal Investment Risks
        </rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000070236ETC-PRO">

          Tracking Basket Structure Risk.


          The fund's Tracking Basket structure may affect the price at which shares of the fund trade in the secondary market. Although the Tracking Basket is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the fund at or close to the fund's NAV per share, there is a risk that market prices will vary significantly from NAV. Exchange Traded Funds (ETFs) trading on the basis of a published Tracking Basket may trade at a wider bid-ask spread than ETFs that publish their portfolios on a daily basis, and therefore, may cost investors more to trade. These risks may increase during periods of market disruption or volatility. In addition, although the fund seeks to benefit from keeping its portfolio information secret, market participants may attempt to use the Tracking Basket to identify the fund's trading strategy. If successful, this could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the fund and its shareholders, such as front running the fund's trades of portfolio securities.


          Arbitrage Risk.


          Unlike ETFs that publicly disclose their complete portfolio holdings each business day, the fund provides certain other information intended to allow market participants to estimate the value of positions in fund shares. Although this information is designed to facilitate arbitrage opportunities in fund shares to reduce bid-ask spread and minimize discounts or premiums between the market price and NAV of fund shares, there is no guarantee the fund's arbitrage mechanism will operate as intended and that the fund will not experience wide bid-ask spreads and/or large discounts or premiums to NAV. In addition, market participants may attempt to use the disclosed information to "reverse engineer" the fund's trading strategy, which, if successful, could increase opportunities for predatory trading practices that may have the potential to negatively impact the fund's performance.


          Fluctuation of Net Asset Value and Share Price.


          Shares&#160;may trade at a larger&#160;premium or discount to the&#160;NAV&#160;than shares of other ETFs, including ETFs that make their daily holdings public. The 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. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings.


          Trading Issues.


          The fund has no public trading history and will operate differently from other actively managed ETFs that publish their portfolio holdings on a daily basis. There can be no assurance that an active trading market will develop or be maintained or that the market for fund shares will operate as intended, which could lead to the fund's shares trading at wider spreads and larger premiums and discounts to NAV than other actively managed ETFs that publish their portfolio holdings on a daily basis, particularly during periods of market disruption or volatility. As a result, it may cost investors more to trade fund shares than shares of other ETFs. There is no guarantee that the fund will be able to attract market makers and Authorized Participants. 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.


          Trading Halt Risk.


          There may be circumstances where a security held in the fund's portfolio but not in the Tracking Basket does not have readily available market quotations. If the Adviser determines that such circumstance may affect the reliability of the Tracking Basket as an arbitrage vehicle, that information, along with the identity and weighting of that security in the fund's portfolio, will be publicly disclosed on the fund's website and the Adviser will assess appropriate remedial measures. In these circumstances, market participants may use this information to engage in certain predatory trading practices that may have the potential to harm the fund and its shareholders. In addition, if securities representing 10% or more of the fund's portfolio do not have readily available market quotations, the Adviser would promptly request the Exchange to halt trading on the fund, meaning that investors would not be able to trade their shares. Trading may also be halted in other circumstances, for example, due to market conditions.


          Authorized Participant Concentration Risk.


          The fund may have a limited number of financial institutions that act as authorized participants, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those authorized participants do not engage in creation and redemption orders, there may be a significantly diminished trading market for fund shares or fund shares may trade at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The authorized participant concentration risk may be heightened due to the fact that the fund does not disclose its portfolio holdings daily, unlike certain other actively managed ETFs, and could be greater during market disruptions or periods of volatility.


          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.


          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.


          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.


          Quantitative Investing.


          Securities selected using quantitative analysis can perform differently from the market as a whole or securities selected using only fundamental analysis


          Mid Cap Investing.


          The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.


          Small Cap Investing.


          The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.



           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.




           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
           .


           &#160;
           You could lose money by investing in the fund.



        </rr:RiskNarrativeTextBlock>
    <rr:RiskNondiversifiedStatus contextRef="S000070236ETC-PRO">
           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.
          </rr:RiskNondiversifiedStatus>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000070236ETC-PRO">
           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
           .
          </rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000070236ETC-PRO">
           &#160;
           You could lose money by investing in the fund.
          </rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000070236ETC-PRO">
         Performance
        </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000070236ETC-PRO">


           Performance history will be available for the fund after the fund has been in operation for one calendar year.


        </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess contextRef="S000070236ETC-PRO">
           Performance history will be available for the fund after the fund has been in operation for one calendar year.
          </rr:PerformanceOneYearOrLess>
    <link:footnoteLink
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    <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">September 12, 2016</xhtml:span>

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     <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">September 12, 2016</xhtml:span>

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     <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

      <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">September 12, 2016</xhtml:span>

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       <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">September 12, 2016</xhtml:span>

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        <link:loc
          xlink:href="#footnoteCPF-PROS000068350AAR_A_IndexIXXRF"
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        <link:footnote id="footnoteCPF-PROS000068350AAR_A" xlink:label="footnoteCPF-PROS000068350AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
          <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

           <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">September 15, 2020</xhtml:span>

         </link:footnote>
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        <link:loc
          xlink:href="#footnoteCPF-PROS000068350AAR_A_IndexRS001"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteCPF-PROS000054754AAR_A_IndexIXZ6F"
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        <link:footnote id="footnoteCPF-PROS000054754AAR_A" xlink:label="footnoteCPF-PROS000054754AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
           <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

            <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">September 12, 2016</xhtml:span>

          </link:footnote>
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        <link:loc
          xlink:href="#footnoteCPF-PROS000054754AAR_A_IndexRS001"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042579AAR_A_IndexMC024"
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        <link:footnote id="footnoteEXT-PROS000042579AAR_A" xlink:label="footnoteEXT-PROS000042579AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
   <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

    <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

  </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042579AAR_A_IndexSP001"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042570AAR_A_IndexIXWMW"
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        <link:footnote id="footnoteEXT-PROS000042570AAR_A" xlink:label="footnoteEXT-PROS000042570AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
    <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

     <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

   </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042570AAR_A_IndexSP001"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042572AAR_A_IndexIXWMX"
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        <link:footnote id="footnoteEXT-PROS000042572AAR_A" xlink:label="footnoteEXT-PROS000042572AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
     <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

      <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

    </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042572AAR_A_IndexSP001"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042573AAR_A_IndexIXWMY"
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        <link:footnote id="footnoteEXT-PROS000042573AAR_A" xlink:label="footnoteEXT-PROS000042573AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
      <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

       <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

     </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042573AAR_A_IndexSP001"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042574AAR_A_IndexIXWMZ"
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        <link:footnote id="footnoteEXT-PROS000042574AAR_A" xlink:label="footnoteEXT-PROS000042574AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
       <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

        <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

      </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042574AAR_A_IndexSP001"
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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042575AAR_A_IndexIXWN0"
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        <link:footnote id="footnoteEXT-PROS000042575AAR_A" xlink:label="footnoteEXT-PROS000042575AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
        <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

         <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

       </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042575AAR_A_IndexSP001"
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        <link:footnoteArc
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          xlink:from="footnoteEXT-PROS000042575AAR_A_IndexSP001"
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042576AAR_A_IndexIXWN1"
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        <link:footnote id="footnoteEXT-PROS000042576AAR_A" xlink:label="footnoteEXT-PROS000042576AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
         <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

          <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

        </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042576AAR_A_IndexSP001"
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        <link:footnoteArc
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          xlink:from="footnoteEXT-PROS000042576AAR_A_IndexSP001"
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042577AAR_A_IndexIXWN2"
          xlink:label="footnoteEXT-PROS000042577AAR_A_IndexIXWN2"
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        <link:footnote id="footnoteEXT-PROS000042577AAR_A" xlink:label="footnoteEXT-PROS000042577AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
          <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

           <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

         </link:footnote>
        <link:footnoteArc
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          xlink:from="footnoteEXT-PROS000042577AAR_A_IndexIXWN2"
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          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteEXT-PROS000042577AAR_A_IndexSP001"
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        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="footnoteEXT-PROS000042577AAR_A_IndexSP001"
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          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteEXT-PROS000042578AAR_A_IndexIXWN3"
          xlink:label="footnoteEXT-PROS000042578AAR_A_IndexIXWN3"
          xlink:type="locator"/>
        <link:footnote id="footnoteEXT-PROS000042578AAR_A" xlink:label="footnoteEXT-PROS000042578AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
           <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

            <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

          </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042578AAR_A_IndexSP001"
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        <link:footnoteArc
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          xlink:from="footnoteEXT-PROS000042578AAR_A_IndexSP001"
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          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteEXT-PROS000047984AAR_A_IndexIXWN4"
          xlink:label="footnoteEXT-PROS000047984AAR_A_IndexIXWN4"
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        <link:footnote id="footnoteEXT-PROS000047984AAR_A" xlink:label="footnoteEXT-PROS000047984AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
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             <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">February 2, 2015</xhtml:span>

           </link:footnote>
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        <link:loc
          xlink:href="#footnoteEXT-PROS000047984AAR_A_IndexSP001"
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        <link:footnoteArc
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          xlink:from="footnoteEXT-PROS000047984AAR_A_IndexSP001"
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          xlink:type="arc"/>
        <link:loc
          xlink:href="#footnoteEXT-PROS000042571AAR_A_IndexIXWN5"
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        <link:footnote id="footnoteEXT-PROS000042571AAR_A" xlink:label="footnoteEXT-PROS000042571AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
             <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

              <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">October 21, 2013</xhtml:span>

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        <link:footnoteArc
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        <link:loc
          xlink:href="#footnoteEXT-PROS000042571AAR_A_IndexSP001"
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          xlink:from="footnoteEXT-PROS000042571AAR_A_IndexSP001"
          xlink:to="footnoteEXT-PROS000042571AAR_A"
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        <link:loc
          xlink:href="#footnoteETC-PROS000068173AAR_A_IndexRS004"
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   <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

    <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">June 2, 2020</xhtml:span>

  </link:footnote>
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        <link:footnote id="footnoteETC-PROS000068175AAR_A" xlink:label="footnoteETC-PROS000068175AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
    <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

     <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">June 2, 2020</xhtml:span>

   </link:footnote>
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        <link:loc
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        <link:footnote id="footnoteETC-PROS000068174AAR_A" xlink:label="footnoteETC-PROS000068174AAR_A" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:6px;color:#000000;font-style:normal;vertical-align:super;font-weight:normal;">A</xhtml:span>
       <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">From </xhtml:span>

        <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:italic;font-weight:normal;">June 2, 2020</xhtml:span>

      </link:footnote>
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        <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;"><xhtml:span style="padding-right:10px"/></xhtml:span>

         <xhtml:span style="font-family:'Fidelity Futura Std Book',Arial,Helvetica,sans-serif;font-size:11px;color:#000000;font-style:normal;font-weight:normal;">Based on historical expenses, adjusted to reflect current fees.</xhtml:span>

       </link:footnote>
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