<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>29</ContextCount>
  <ElementCount>169</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>18</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>2</UnitCount>
  <MyReports>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000000 - Document - Document and Entity Information {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/DocumentInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory></MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>000001 - Document - Risk/Return Summary {Unlabeled} - Fidelity Emerging Markets Multifactor ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/SummaryS000064787_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Summary- Fidelity Emerging Markets Multifactor ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>000002 - Schedule - Shareholder Fees {- Fidelity Emerging Markets Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ShareholderFeesS000064787_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Shareholder Fees {- Fidelity Emerging Markets Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>000003 - Schedule - Annual Operating Expenses {- Fidelity Emerging Markets Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/OperatingExpensesS000064787_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Operating Expenses {- Fidelity Emerging Markets Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>000004 - Schedule - Expense Example {- Fidelity Emerging Markets Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ExpenseExampleS000064787_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Expense Example {- Fidelity Emerging Markets Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>000006 - Schedule - Annual Total Returns - Fidelity Emerging Markets Multifactor ETF [BarChart]</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AnnualTotalReturnsBarChartS000064787_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Total Returns - Fidelity Emerging Markets Multifactor ETF [BarChart]</ShortName>
      <MenuCategory></MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>000007 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity Emerging Markets Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AverageAnnualTotalReturnsS000064787_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Average Annual Total Returns{- Fidelity Emerging Markets Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>000009 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Emerging Markets Multifactor ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/DisclosureDetailS000064787_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Detail Data- Fidelity Emerging Markets Multifactor ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>000010 - Document - Risk/Return Summary {Unlabeled} - Fidelity International High Dividend ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/SummaryS000059462_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Summary- Fidelity International High Dividend ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>000011 - Schedule - Shareholder Fees {- Fidelity International High Dividend ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ShareholderFeesS000059462_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Shareholder Fees {- Fidelity International High Dividend ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>000012 - Schedule - Annual Operating Expenses {- Fidelity International High Dividend ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/OperatingExpensesS000059462_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Operating Expenses {- Fidelity International High Dividend ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>000013 - Schedule - Expense Example {- Fidelity International High Dividend ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ExpenseExampleS000059462_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Expense Example {- Fidelity International High Dividend ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>000015 - Schedule - Annual Total Returns - Fidelity International High Dividend ETF [BarChart]</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AnnualTotalReturnsBarChartS000059462_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Total Returns - Fidelity International High Dividend ETF [BarChart]</ShortName>
      <MenuCategory></MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>000016 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity International High Dividend ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AverageAnnualTotalReturnsS000059462_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Average Annual Total Returns{- Fidelity International High Dividend ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>000018 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity International High Dividend ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/DisclosureDetailS000059462_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Detail Data- Fidelity International High Dividend ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>000019 - Document - Risk/Return Summary {Unlabeled} - Fidelity International Multifactor ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/SummaryS000064788_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Summary- Fidelity International Multifactor ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>000020 - Schedule - Shareholder Fees {- Fidelity International Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ShareholderFeesS000064788_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Shareholder Fees {- Fidelity International Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>000021 - Schedule - Annual Operating Expenses {- Fidelity International Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/OperatingExpensesS000064788_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Operating Expenses {- Fidelity International Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>000022 - Schedule - Expense Example {- Fidelity International Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ExpenseExampleS000064788_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Expense Example {- Fidelity International Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>000024 - Schedule - Annual Total Returns - Fidelity International Multifactor ETF [BarChart]</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AnnualTotalReturnsBarChartS000064788_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Total Returns - Fidelity International Multifactor ETF [BarChart]</ShortName>
      <MenuCategory></MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>000025 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity International Multifactor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AverageAnnualTotalReturnsS000064788_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Average Annual Total Returns{- Fidelity International Multifactor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>000027 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity International Multifactor ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/DisclosureDetailS000064788_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Detail Data- Fidelity International Multifactor ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>000028 - Document - Risk/Return Summary {Unlabeled} - Fidelity International Value Factor ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/SummaryS000059463_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Summary- Fidelity International Value Factor ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>000029 - Schedule - Shareholder Fees {- Fidelity International Value Factor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ShareholderFeesS000059463_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Shareholder Fees {- Fidelity International Value Factor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>000030 - Schedule - Annual Operating Expenses {- Fidelity International Value Factor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/OperatingExpensesS000059463_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Operating Expenses {- Fidelity International Value Factor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>000031 - Schedule - Expense Example {- Fidelity International Value Factor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/ExpenseExampleS000059463_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Expense Example {- Fidelity International Value Factor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>000033 - Schedule - Annual Total Returns - Fidelity International Value Factor ETF [BarChart]</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AnnualTotalReturnsBarChartS000059463_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Annual Total Returns - Fidelity International Value Factor ETF [BarChart]</ShortName>
      <MenuCategory></MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>000034 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity International Value Factor ETF}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/AverageAnnualTotalReturnsS000059463_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Average Annual Total Returns{- Fidelity International Value Factor ETF}</ShortName>
      <MenuCategory></MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>000036 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity International Value Factor ETF</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.proofPlus.com/role/DisclosureDetailS000059463_D1231FidelityInternationalFactorETFsComboPRO09</Role>
      <ShortName>Risk/Return Detail Data- Fidelity International Value Factor ETF</ShortName>
      <MenuCategory></MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="filing712.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>040000 - Disclosure - Risk/Return Detail Data {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/rr/role/RiskReturnDetailData</Role>
      <ShortName>Risk/Return Detail Data</ShortName>
      <MenuCategory></MenuCategory>
      <Position>30</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="485BPOS" original="filing712.htm">filing712.htm</File>
    <File>exi.htm</File>
    <File>exj.htm</File>
    <File>nyv-20220301.xsd</File>
    <File>nyv-20220301_cal.xml</File>
    <File>nyv-20220301_def.xml</File>
    <File>nyv-20220301_lab.xml</File>
    <File>nyv-20220301_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>fi_logo.jpg</File>
    <File>fipro_logo.jpg</File>
    <File>img779340174.jpg</File>
    <File>img779340734.jpg</File>
    <File>img779341293.jpg</File>
    <File>img779341868.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="6">http://xbrl.sec.gov/dei/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy items="246">http://xbrl.sec.gov/rr/2018-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
