<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:country="http://xbrl.sec.gov/country/2023"
  xmlns:dei="http://xbrl.sec.gov/dei/2023"
  xmlns:fmr="http://www.fidelity.com/20250401"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:oef="http://xbrl.sec.gov/oef/2023"
  xmlns:us-gaap="http://fasb.org/us-gaap/2023"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="fmr-20250401.xsd" xlink:type="simple"/>
    <context id="C000218700_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000218700_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218700_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218700Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000171930_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_GD_JP_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:JP</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_GD_DK_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DK</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_GD_DE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171930_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171930Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000171931_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_GD_DE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_GD_SE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:SE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_GD_JP_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:JP</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_GD_DK_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DK</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171931_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171931Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000223344_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_TW_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TW</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_NL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:NL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_BE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:BE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_BR_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:BR</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_IL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_GD_DK_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DK</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223344_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223344Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000171935_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_GD_IE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_GD_BM_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:BM</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171935_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171935Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000227888_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_GD_IE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227888_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227888Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000171934_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_GD_IE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171934_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171934Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000171932_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_GD_IE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171932_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171932Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000171933_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000171933_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000171933Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000215140_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_GD_BM_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:BM</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000215140_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000215140Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000248142_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_GD_ES_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:ES</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_GD_TW_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TW</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_GD_BailiwickOfJersey_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">fmr:BailiwickOfJerseyMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_GD_FR_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:FR</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000248142_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000248142Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000218329_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_TW_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TW</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_NL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:NL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_FI_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:FI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_IL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_DE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_GD_Other_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">fmr:OtherMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218329_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218329Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000218331_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_GD_DE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_GD_SE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:SE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_GD_CH_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CH</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218331_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218331Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000223347_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_IL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_TH_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TH</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_PR_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:PR</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_JP_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:JP</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_GD_NL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:NL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223347_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223347Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000227887_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_TW_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TW</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_IE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_IN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_BR_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:BR</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_GD_IL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000227887_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000227887Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000218330_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_DE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_TW_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TW</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_NL_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:NL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_CN_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_BE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:BE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_CongoDemocraticRepublicOf_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">fmr:CongoDemocraticRepublicOfMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_ZM_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:ZM</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_GD_Other_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">fmr:OtherMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000218330_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000218330Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000209803_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_RealEstateSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:RealEstateSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_EnergySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:EnergySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_MS_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_PR_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:PR</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_BM_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:BM</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_GB_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:GB</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_SE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:SE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_TH_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TH</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_MC_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:MC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_GD_IE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:IE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000209803_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000209803Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000223346_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TI_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TI_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TI_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TI_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TI_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TI_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TI_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223346_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223346Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <context id="C000223345_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_InformationTechnologySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:InformationTechnologySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_IndustrialSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:IndustrialSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_FinancialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:MSFinancialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_CommunicationsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:CommunicationsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_ConsumerDiscretionarySectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerDiscretionarySectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_HealthcareSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:HealthcareSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_MaterialsSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:MaterialsSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_MS_ConsumerStaplesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:ConsumerStaplesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_GD_TW_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:TW</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="C000223345_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000223345Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-01-31</instant>
        </period>
    </context>
    <context id="Trust">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000945908</identifier>
        </entity>
        <period>
            <startDate>2024-07-31</startDate>
            <endDate>2025-01-31</endDate>
        </period>
    </context>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="holding">
        <measure>shares</measure>
    </unit>
    <dei:DocumentType contextRef="Trust" id="ixv-139851">N-CSRS</dei:DocumentType>
    <dei:AmendmentFlag contextRef="Trust" id="ixv-139852">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="Trust" id="ixv-139853">0000945908</dei:EntityCentralIndexKey>
    <dei:EntityInvCompanyType contextRef="Trust" id="ixv-139854">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName contextRef="Trust" id="ixv-139855">Fidelity Covington Trust</dei:EntityRegistrantName>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-96">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000218700_ClassMember" id="ixv-108">Fidelity&#xae; U.S. Multifactor ETF</oef:FundName>
    <oef:ClassName contextRef="C000218700_ClassMember" id="ixv-111">Fidelity&#xae; U.S. Multifactor ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000218700_ClassMember" id="ixv-115">FLRG</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000218700_ClassMember" id="ixv-144388">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000218700_ClassMember" id="ixv-136">This semi-annual shareholder report contains information about Fidelity&#xae; U.S. Multifactor ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000218700_ClassMember" id="ixv-138">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000218700_ClassMember" id="ixv-143">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000218700_ClassMember" id="ixv-145">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000218700_ClassMember" id="ixv-148">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000218700_ClassMember" id="ixv-151">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000218700_ClassMember" id="ixv-158">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; U.S. Multifactor ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000218700_ClassMember"
      decimals="0"
      id="ixv-144389"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000218700_ClassMember"
      decimals="INF"
      id="ixv-144390"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000218700_ClassMember" id="ixv-198">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;203,842,746&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;106&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000218700_InstantMember"
      decimals="0"
      id="ixv-144391"
      unitRef="usd">203842746</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000218700_InstantMember"
      decimals="INF"
      id="ixv-144392"
      unitRef="holding">106</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000218700_ClassMember"
      decimals="INF"
      id="ixv-144393"
      unitRef="pure">0.31</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000218700_ClassMember" id="ixv-258">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

30.0

&#160;


Financials

13.6

&#160;


Health Care

10.0

&#160;


Consumer Discretionary

9.8

&#160;


Communication Services

9.7

&#160;


Industrials

9.6

&#160;


Consumer Staples

5.4

&#160;


Utilities

3.6

&#160;


Energy

3.4

&#160;


Materials

2.4

&#160;


Real Estate

2.3

&#160;


&#160;




Common Stocks

99.8


Short-Term Investments and Net Other Assets (Liabilities)

0.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.2


&#160;






United States

99.5


China

0.5




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 99.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 0.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218700_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144394"
      unitRef="pure">0.300</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144395"
      unitRef="pure">0.136</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144396"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144397"
      unitRef="pure">0.098</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144398"
      unitRef="pure">0.097</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144399"
      unitRef="pure">0.096</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144400"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144401"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144402"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144403"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144404"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144405"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144406"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_GD_US_Member"
      decimals="INF"
      id="ixv-144407"
      unitRef="pure">0.995</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_GD_CN_Member"
      decimals="INF"
      id="ixv-144408"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000218700_ClassMember" id="ixv-493">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Microsoft Corp

6.0


&#160;


NVIDIA Corp

5.8


&#160;


Alphabet Inc Class A

4.2


&#160;


Meta Platforms Inc Class A

2.9


&#160;


Vistra Corp

2.4


&#160;


Broadcom Inc

2.4


&#160;


Visa Inc Class A

2.0


&#160;


Mastercard Inc Class A

1.8


&#160;


Eli Lilly &amp; Co

1.7


&#160;


Home Depot Inc/The

1.6


&#160;


&#160;

30.8

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218700_TH_0_Member"
      decimals="INF"
      id="ixv-144409"
      unitRef="pure">0.060</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_1_Member"
      decimals="INF"
      id="ixv-144410"
      unitRef="pure">0.058</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_2_Member"
      decimals="INF"
      id="ixv-144411"
      unitRef="pure">0.042</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_3_Member"
      decimals="INF"
      id="ixv-144412"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_4_Member"
      decimals="INF"
      id="ixv-144413"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_5_Member"
      decimals="INF"
      id="ixv-144414"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_6_Member"
      decimals="INF"
      id="ixv-144415"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_7_Member"
      decimals="INF"
      id="ixv-144416"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_8_Member"
      decimals="INF"
      id="ixv-144417"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218700_TH_9_Member"
      decimals="INF"
      id="ixv-144418"
      unitRef="pure">0.016</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-664">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000171930_ClassMember" id="ixv-676">Fidelity&#xae; High Dividend ETF</oef:FundName>
    <oef:ClassName contextRef="C000171930_ClassMember" id="ixv-679">Fidelity&#xae; High Dividend ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000171930_ClassMember" id="ixv-683">FDVV</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000171930_ClassMember" id="ixv-144419">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000171930_ClassMember" id="ixv-704">This semi-annual shareholder report contains information about Fidelity&#xae; High Dividend ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000171930_ClassMember" id="ixv-706">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000171930_ClassMember" id="ixv-711">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000171930_ClassMember" id="ixv-713">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000171930_ClassMember" id="ixv-716">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000171930_ClassMember" id="ixv-719">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000171930_ClassMember" id="ixv-726">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; High Dividend ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000171930_ClassMember"
      decimals="0"
      id="ixv-144420"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000171930_ClassMember"
      decimals="INF"
      id="ixv-144421"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000171930_ClassMember" id="ixv-766">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,594,737,503&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;107&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;1&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000171930_InstantMember"
      decimals="0"
      id="ixv-144422"
      unitRef="usd">4594737503</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000171930_InstantMember"
      decimals="INF"
      id="ixv-144423"
      unitRef="holding">107</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000171930_ClassMember"
      decimals="INF"
      id="ixv-144424"
      unitRef="pure">0.01</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000171930_ClassMember" id="ixv-826">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

25.7

&#160;


Industrials

16.3

&#160;


Consumer Staples

12.2

&#160;


Energy

10.2

&#160;


Utilities

9.0

&#160;


Real Estate

8.5

&#160;


Financials

8.0

&#160;


Health Care

5.0

&#160;


Consumer Discretionary

3.4

&#160;


Communication Services

1.5

&#160;


&#160;




Common Stocks

99.8


Short-Term Investments and Net Other Assets (Liabilities)

0.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.2


&#160;






United States

91.7


United Kingdom

4.5


Japan

2.6


Denmark

0.8


Germany

0.4




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 91.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 4.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Japan - 2.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Denmark - 0.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Germany - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171930_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144425"
      unitRef="pure">0.257</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144426"
      unitRef="pure">0.163</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144427"
      unitRef="pure">0.122</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144428"
      unitRef="pure">0.102</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144429"
      unitRef="pure">0.090</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144430"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144431"
      unitRef="pure">0.080</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144432"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144433"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144434"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144435"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144436"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_GD_US_Member"
      decimals="INF"
      id="ixv-144437"
      unitRef="pure">0.917</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_GD_GB_Member"
      decimals="INF"
      id="ixv-144438"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_GD_JP_Member"
      decimals="INF"
      id="ixv-144439"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_GD_DK_Member"
      decimals="INF"
      id="ixv-144440"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_GD_DE_Member"
      decimals="INF"
      id="ixv-144441"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000171930_ClassMember" id="ixv-1091">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Apple Inc

5.9


&#160;


NVIDIA Corp

5.6


&#160;


Microsoft Corp

5.2


&#160;


Broadcom Inc

2.7


&#160;


Targa Resources Corp

2.2


&#160;


Philip Morris International Inc

2.1


&#160;


Procter &amp; Gamble Co/The

2.0


&#160;


GE Aerospace

2.0


&#160;


Exxon Mobil Corp

1.8


&#160;


RTX Corp

1.7


&#160;


&#160;

31.2

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171930_TH_0_Member"
      decimals="INF"
      id="ixv-144442"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_1_Member"
      decimals="INF"
      id="ixv-144443"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_2_Member"
      decimals="INF"
      id="ixv-144444"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_3_Member"
      decimals="INF"
      id="ixv-144445"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_4_Member"
      decimals="INF"
      id="ixv-144446"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_5_Member"
      decimals="INF"
      id="ixv-144447"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_6_Member"
      decimals="INF"
      id="ixv-144448"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_7_Member"
      decimals="INF"
      id="ixv-144449"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_8_Member"
      decimals="INF"
      id="ixv-144450"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171930_TH_9_Member"
      decimals="INF"
      id="ixv-144451"
      unitRef="pure">0.017</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-1262">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000171931_ClassMember" id="ixv-1274">Fidelity&#xae; Dividend ETF for Rising Rates</oef:FundName>
    <oef:ClassName contextRef="C000171931_ClassMember" id="ixv-1277">Fidelity&#xae; Dividend ETF for Rising Rates</oef:ClassName>
    <dei:TradingSymbol contextRef="C000171931_ClassMember" id="ixv-1281">FDRR</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000171931_ClassMember" id="ixv-144452">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000171931_ClassMember" id="ixv-1302">This semi-annual shareholder report contains information about Fidelity&#xae; Dividend ETF for Rising Rates for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000171931_ClassMember" id="ixv-1304">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000171931_ClassMember" id="ixv-1309">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000171931_ClassMember" id="ixv-1311">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000171931_ClassMember" id="ixv-1314">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000171931_ClassMember" id="ixv-1317">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000171931_ClassMember" id="ixv-1324">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Dividend ETF for Rising Rates&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000171931_ClassMember"
      decimals="0"
      id="ixv-144453"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000171931_ClassMember"
      decimals="INF"
      id="ixv-144454"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000171931_ClassMember" id="ixv-1364">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;556,117,726&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;118&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;2&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000171931_InstantMember"
      decimals="0"
      id="ixv-144455"
      unitRef="usd">556117726</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000171931_InstantMember"
      decimals="INF"
      id="ixv-144456"
      unitRef="holding">118</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000171931_ClassMember"
      decimals="INF"
      id="ixv-144457"
      unitRef="pure">0.02</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000171931_ClassMember" id="ixv-1424">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

32.6

&#160;


Financials

15.6

&#160;


Health Care

10.5

&#160;


Industrials

9.4

&#160;


Consumer Discretionary

9.2

&#160;


Communication Services

7.4

&#160;


Consumer Staples

5.3

&#160;


Energy

3.2

&#160;


Materials

2.2

&#160;


Real Estate

2.2

&#160;


Utilities

2.1

&#160;


&#160;




Common Stocks

99.7


Short-Term Investments and Net Other Assets (Liabilities)

0.3




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.3


&#160;






United States

94.2


United Kingdom

2.0


Germany

1.4


Sweden

1.2


Japan

0.9


Denmark

0.3




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 94.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 2.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Germany - 1.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Sweden - 1.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Japan - 0.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Denmark - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171931_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144458"
      unitRef="pure">0.326</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144459"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144460"
      unitRef="pure">0.105</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144461"
      unitRef="pure">0.094</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144462"
      unitRef="pure">0.092</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144463"
      unitRef="pure">0.074</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144464"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144465"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144466"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144467"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144468"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144469"
      unitRef="pure">0.997</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144470"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_GD_US_Member"
      decimals="INF"
      id="ixv-144471"
      unitRef="pure">0.942</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_GD_GB_Member"
      decimals="INF"
      id="ixv-144472"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_GD_DE_Member"
      decimals="INF"
      id="ixv-144473"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_GD_SE_Member"
      decimals="INF"
      id="ixv-144474"
      unitRef="pure">0.012</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_GD_JP_Member"
      decimals="INF"
      id="ixv-144475"
      unitRef="pure">0.009</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_GD_DK_Member"
      decimals="INF"
      id="ixv-144476"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000171931_ClassMember" id="ixv-1711">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Apple Inc

7.5


&#160;


NVIDIA Corp

7.3


&#160;


Microsoft Corp

6.6


&#160;


Broadcom Inc

3.4


&#160;


JPMorgan Chase &amp; Co

2.3


&#160;


Eli Lilly &amp; Co

2.1


&#160;


Visa Inc Class A

1.7


&#160;


UnitedHealth Group Inc

1.7


&#160;


IBM Corporation

1.6


&#160;


Cisco Systems Inc

1.5


&#160;


&#160;

35.7

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171931_TH_0_Member"
      decimals="INF"
      id="ixv-144477"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_1_Member"
      decimals="INF"
      id="ixv-144478"
      unitRef="pure">0.073</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_2_Member"
      decimals="INF"
      id="ixv-144479"
      unitRef="pure">0.066</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_3_Member"
      decimals="INF"
      id="ixv-144480"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_4_Member"
      decimals="INF"
      id="ixv-144481"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_5_Member"
      decimals="INF"
      id="ixv-144482"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_6_Member"
      decimals="INF"
      id="ixv-144483"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_7_Member"
      decimals="INF"
      id="ixv-144484"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_8_Member"
      decimals="INF"
      id="ixv-144485"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171931_TH_9_Member"
      decimals="INF"
      id="ixv-144486"
      unitRef="pure">0.015</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-1882">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000223344_ClassMember" id="ixv-1894">Fidelity&#xae; Fundamental Large Cap Growth ETF</oef:FundName>
    <oef:ClassName contextRef="C000223344_ClassMember" id="ixv-1897">Fidelity&#xae; Fundamental Large Cap Growth ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000223344_ClassMember" id="ixv-1901">FFLG</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000223344_ClassMember" id="ixv-144487">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000223344_ClassMember" id="ixv-1922">This semi-annual shareholder report contains information about Fidelity&#xae; Fundamental Large Cap Growth ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000223344_ClassMember" id="ixv-1924">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000223344_ClassMember" id="ixv-1929">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000223344_ClassMember" id="ixv-1931">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000223344_ClassMember" id="ixv-1934">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000223344_ClassMember" id="ixv-1937">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000223344_ClassMember" id="ixv-1944">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Fundamental Large Cap Growth ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000223344_ClassMember"
      decimals="0"
      id="ixv-144488"
      unitRef="usd">20</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000223344_ClassMember"
      decimals="INF"
      id="ixv-144489"
      unitRef="pure">0.0038</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000223344_ClassMember" id="ixv-1984">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;384,174,657&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;100&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;47&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000223344_InstantMember"
      decimals="0"
      id="ixv-144490"
      unitRef="usd">384174657</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000223344_InstantMember"
      decimals="INF"
      id="ixv-144491"
      unitRef="holding">100</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000223344_ClassMember"
      decimals="INF"
      id="ixv-144492"
      unitRef="pure">0.47</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000223344_ClassMember" id="ixv-2044">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

42.4

&#160;


Communication Services

16.4

&#160;


Consumer Discretionary

15.2

&#160;


Health Care

10.1

&#160;


Financials

6.1

&#160;


Industrials

5.6

&#160;


Consumer Staples

1.5

&#160;


Materials

0.6

&#160;


Utilities

0.5

&#160;


Real Estate

0.3

&#160;


Energy

0.1

&#160;


&#160;




Common Stocks

98.8


Short-Term Investments and Net Other Assets (Liabilities)

1.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 98.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 1.2


&#160;






United States

93.8


Taiwan

2.6


China

1.3


Canada

0.8


Netherlands

0.6


Belgium

0.3


Brazil

0.3


Israel

0.2


Denmark

0.1




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 93.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Taiwan - 2.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 1.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 0.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Netherlands - 0.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Belgium - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Brazil - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Israel - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Denmark - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223344_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144493"
      unitRef="pure">0.424</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144494"
      unitRef="pure">0.164</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144495"
      unitRef="pure">0.152</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144496"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144497"
      unitRef="pure">0.061</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144498"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144499"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144500"
      unitRef="pure">0.006</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144501"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144502"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144503"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144504"
      unitRef="pure">0.988</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144505"
      unitRef="pure">0.012</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_US_Member"
      decimals="INF"
      id="ixv-144506"
      unitRef="pure">0.938</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_TW_Member"
      decimals="INF"
      id="ixv-144507"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_CN_Member"
      decimals="INF"
      id="ixv-144508"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_CA_Member"
      decimals="INF"
      id="ixv-144509"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_NL_Member"
      decimals="INF"
      id="ixv-144510"
      unitRef="pure">0.006</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_BE_Member"
      decimals="INF"
      id="ixv-144511"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_BR_Member"
      decimals="INF"
      id="ixv-144512"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_IL_Member"
      decimals="INF"
      id="ixv-144513"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_GD_DK_Member"
      decimals="INF"
      id="ixv-144514"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000223344_ClassMember" id="ixv-2370">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


NVIDIA Corp

11.6


&#160;


Apple Inc

9.4


&#160;


Amazon.com Inc

8.5


&#160;


Microsoft Corp

7.9


&#160;


Alphabet Inc Class A

5.1


&#160;


Meta Platforms Inc Class A

4.9


&#160;


Alphabet Inc Class C

2.6


&#160;


Taiwan Semiconductor Manufacturing Co Ltd ADR

2.6


&#160;


Eli Lilly &amp; Co

2.4


&#160;


Netflix Inc

2.1


&#160;


&#160;

57.1

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223344_TH_0_Member"
      decimals="INF"
      id="ixv-144515"
      unitRef="pure">0.116</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_1_Member"
      decimals="INF"
      id="ixv-144516"
      unitRef="pure">0.094</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_2_Member"
      decimals="INF"
      id="ixv-144517"
      unitRef="pure">0.085</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_3_Member"
      decimals="INF"
      id="ixv-144518"
      unitRef="pure">0.079</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_4_Member"
      decimals="INF"
      id="ixv-144519"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_5_Member"
      decimals="INF"
      id="ixv-144520"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_6_Member"
      decimals="INF"
      id="ixv-144521"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_7_Member"
      decimals="INF"
      id="ixv-144522"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_8_Member"
      decimals="INF"
      id="ixv-144523"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223344_TH_9_Member"
      decimals="INF"
      id="ixv-144524"
      unitRef="pure">0.021</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-2541">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000171935_ClassMember" id="ixv-2553">Fidelity&#xae; Value Factor ETF</oef:FundName>
    <oef:ClassName contextRef="C000171935_ClassMember" id="ixv-2556">Fidelity&#xae; Value Factor ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000171935_ClassMember" id="ixv-2560">FVAL</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000171935_ClassMember" id="ixv-144525">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000171935_ClassMember" id="ixv-2581">This semi-annual shareholder report contains information about Fidelity&#xae; Value Factor ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000171935_ClassMember" id="ixv-2583">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000171935_ClassMember" id="ixv-2588">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000171935_ClassMember" id="ixv-2590">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000171935_ClassMember" id="ixv-2593">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000171935_ClassMember" id="ixv-2596">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000171935_ClassMember" id="ixv-2603">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Value Factor ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000171935_ClassMember"
      decimals="0"
      id="ixv-144526"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000171935_ClassMember"
      decimals="INF"
      id="ixv-144527"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000171935_ClassMember" id="ixv-2643">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,018,693,406&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;129&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;37&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000171935_InstantMember"
      decimals="0"
      id="ixv-144528"
      unitRef="usd">1018693406</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000171935_InstantMember"
      decimals="INF"
      id="ixv-144529"
      unitRef="holding">129</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000171935_ClassMember"
      decimals="INF"
      id="ixv-144530"
      unitRef="pure">0.37</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000171935_ClassMember" id="ixv-2703">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

28.9

&#160;


Financials

14.9

&#160;


Consumer Discretionary

10.9

&#160;


Health Care

10.5

&#160;


Industrials

9.9

&#160;


Communication Services

9.4

&#160;


Consumer Staples

5.4

&#160;


Energy

3.1

&#160;


Real Estate

2.4

&#160;


Utilities

2.2

&#160;


Materials

2.2

&#160;


&#160;




Common Stocks

99.8


Short-Term Investments and Net Other Assets (Liabilities)

0.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.2


&#160;






United States

98.3


Ireland

1.2


Bermuda

0.5




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 98.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Ireland - 1.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bermuda - 0.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171935_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144531"
      unitRef="pure">0.289</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144532"
      unitRef="pure">0.149</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144533"
      unitRef="pure">0.109</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144534"
      unitRef="pure">0.105</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144535"
      unitRef="pure">0.099</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144536"
      unitRef="pure">0.094</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144537"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144538"
      unitRef="pure">0.031</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144539"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144540"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144541"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144542"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144543"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_GD_US_Member"
      decimals="INF"
      id="ixv-144544"
      unitRef="pure">0.983</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_GD_IE_Member"
      decimals="INF"
      id="ixv-144545"
      unitRef="pure">0.012</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_GD_BM_Member"
      decimals="INF"
      id="ixv-144546"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000171935_ClassMember" id="ixv-2951">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Apple Inc

6.9


&#160;


Microsoft Corp

6.3


&#160;


NVIDIA Corp

6.1


&#160;


Amazon.com Inc

4.5


&#160;


Alphabet Inc Class A

4.4


&#160;


Meta Platforms Inc Class A

3.1


&#160;


Berkshire Hathaway Inc Class B

2.0


&#160;


JPMorgan Chase &amp; Co

2.0


&#160;


Visa Inc Class A

1.6


&#160;


UnitedHealth Group Inc

1.6


&#160;


&#160;

38.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171935_TH_0_Member"
      decimals="INF"
      id="ixv-144547"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_1_Member"
      decimals="INF"
      id="ixv-144548"
      unitRef="pure">0.063</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_2_Member"
      decimals="INF"
      id="ixv-144549"
      unitRef="pure">0.061</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_3_Member"
      decimals="INF"
      id="ixv-144550"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_4_Member"
      decimals="INF"
      id="ixv-144551"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_5_Member"
      decimals="INF"
      id="ixv-144552"
      unitRef="pure">0.031</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_6_Member"
      decimals="INF"
      id="ixv-144553"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_7_Member"
      decimals="INF"
      id="ixv-144554"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_8_Member"
      decimals="INF"
      id="ixv-144555"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171935_TH_9_Member"
      decimals="INF"
      id="ixv-144556"
      unitRef="pure">0.016</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-3122">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000227888_ClassMember" id="ixv-3134">Fidelity&#xae; Women's Leadership ETF</oef:FundName>
    <oef:ClassName contextRef="C000227888_ClassMember" id="ixv-3137">Fidelity&#xae; Women's Leadership ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000227888_ClassMember" id="ixv-3141">FDWM</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000227888_ClassMember" id="ixv-144557">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000227888_ClassMember" id="ixv-3162">This semi-annual shareholder report contains information about Fidelity&#xae; Women's Leadership ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000227888_ClassMember" id="ixv-3164">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000227888_ClassMember" id="ixv-3169">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000227888_ClassMember" id="ixv-3171">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000227888_ClassMember" id="ixv-3174">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000227888_ClassMember" id="ixv-3177">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000227888_ClassMember" id="ixv-3184">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Women's Leadership ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.59&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000227888_ClassMember"
      decimals="0"
      id="ixv-144558"
      unitRef="usd">31</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000227888_ClassMember"
      decimals="INF"
      id="ixv-144559"
      unitRef="pure">0.0059</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000227888_ClassMember" id="ixv-3224">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,783,249&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;88&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;45&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000227888_InstantMember"
      decimals="0"
      id="ixv-144560"
      unitRef="usd">4783249</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000227888_InstantMember"
      decimals="INF"
      id="ixv-144561"
      unitRef="holding">88</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000227888_ClassMember"
      decimals="INF"
      id="ixv-144562"
      unitRef="pure">0.45</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000227888_ClassMember" id="ixv-3284">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

28.4

&#160;


Financials

13.6

&#160;


Consumer Discretionary

13.2

&#160;


Health Care

12.4

&#160;


Industrials

10.5

&#160;


Communication Services

7.9

&#160;


Energy

3.3

&#160;


Consumer Staples

2.6

&#160;


Materials

2.4

&#160;


Real Estate

1.7

&#160;


Utilities

0.7

&#160;


&#160;




Common Stocks

96.7


Short-Term Investments and Net Other Assets (Liabilities)

3.3




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 96.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 3.3


&#160;






United States

96.0


Ireland

2.2


China

1.0


Canada

0.8




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 96.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Ireland - 2.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 1.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 0.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000227888_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144563"
      unitRef="pure">0.284</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144564"
      unitRef="pure">0.136</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144565"
      unitRef="pure">0.132</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144566"
      unitRef="pure">0.124</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144567"
      unitRef="pure">0.105</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144568"
      unitRef="pure">0.079</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144569"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144570"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144571"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144572"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144573"
      unitRef="pure">0.007</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144574"
      unitRef="pure">0.967</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144575"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_GD_US_Member"
      decimals="INF"
      id="ixv-144576"
      unitRef="pure">0.960</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_GD_IE_Member"
      decimals="INF"
      id="ixv-144577"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_GD_CN_Member"
      decimals="INF"
      id="ixv-144578"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_GD_CA_Member"
      decimals="INF"
      id="ixv-144579"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000227888_ClassMember" id="ixv-3545">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Microsoft Corp

4.7


&#160;


Amazon.com Inc

4.4


&#160;


Apple Inc

4.3


&#160;


Alphabet Inc Class C

4.3


&#160;


State Street Institutional Treasury Plus Money Market Fund Trust Class

2.9


&#160;


Walt Disney Co/The

2.2


&#160;


Micron Technology Inc

2.2


&#160;


Accenture PLC Class A

2.2


&#160;


Salesforce Inc

2.0


&#160;


Arista Networks Inc

1.9


&#160;


&#160;

31.1

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000227888_TH_0_Member"
      decimals="INF"
      id="ixv-144580"
      unitRef="pure">0.047</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_1_Member"
      decimals="INF"
      id="ixv-144581"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_2_Member"
      decimals="INF"
      id="ixv-144582"
      unitRef="pure">0.043</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_3_Member"
      decimals="INF"
      id="ixv-144583"
      unitRef="pure">0.043</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_4_Member"
      decimals="INF"
      id="ixv-144584"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_5_Member"
      decimals="INF"
      id="ixv-144585"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_6_Member"
      decimals="INF"
      id="ixv-144586"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_7_Member"
      decimals="INF"
      id="ixv-144587"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_8_Member"
      decimals="INF"
      id="ixv-144588"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227888_TH_9_Member"
      decimals="INF"
      id="ixv-144589"
      unitRef="pure">0.019</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-3716">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000171934_ClassMember" id="ixv-3728">Fidelity&#xae; Quality Factor ETF</oef:FundName>
    <oef:ClassName contextRef="C000171934_ClassMember" id="ixv-3731">Fidelity&#xae; Quality Factor ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000171934_ClassMember" id="ixv-3735">FQAL</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000171934_ClassMember" id="ixv-144590">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000171934_ClassMember" id="ixv-3756">This semi-annual shareholder report contains information about Fidelity&#xae; Quality Factor ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000171934_ClassMember" id="ixv-3758">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000171934_ClassMember" id="ixv-3763">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000171934_ClassMember" id="ixv-3765">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000171934_ClassMember" id="ixv-3768">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000171934_ClassMember" id="ixv-3771">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000171934_ClassMember" id="ixv-3778">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Quality Factor ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000171934_ClassMember"
      decimals="0"
      id="ixv-144591"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000171934_ClassMember"
      decimals="INF"
      id="ixv-144592"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000171934_ClassMember" id="ixv-3818">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,096,232,319&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;129&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000171934_InstantMember"
      decimals="0"
      id="ixv-144593"
      unitRef="usd">1096232319</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000171934_InstantMember"
      decimals="INF"
      id="ixv-144594"
      unitRef="holding">129</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000171934_ClassMember"
      decimals="INF"
      id="ixv-144595"
      unitRef="pure">0.32</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000171934_ClassMember" id="ixv-3878">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

29.1

&#160;


Financials

14.4

&#160;


Health Care

11.0

&#160;


Consumer Discretionary

10.3

&#160;


Communication Services

10.0

&#160;


Industrials

9.1

&#160;


Consumer Staples

5.1

&#160;


Energy

3.5

&#160;


Utilities

2.7

&#160;


Materials

2.3

&#160;


Real Estate

2.3

&#160;


&#160;




Common Stocks

99.8


Short-Term Investments and Net Other Assets (Liabilities)

0.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.2


&#160;






United States

98.9


Ireland

1.1




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 98.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Ireland - 1.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171934_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144596"
      unitRef="pure">0.291</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144597"
      unitRef="pure">0.144</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144598"
      unitRef="pure">0.110</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144599"
      unitRef="pure">0.103</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144600"
      unitRef="pure">0.100</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144601"
      unitRef="pure">0.091</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144602"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144603"
      unitRef="pure">0.035</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144604"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144605"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144606"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144607"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144608"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_GD_US_Member"
      decimals="INF"
      id="ixv-144609"
      unitRef="pure">0.989</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_GD_IE_Member"
      decimals="INF"
      id="ixv-144610"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000171934_ClassMember" id="ixv-4113">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Apple Inc

6.8


&#160;


Microsoft Corp

6.2


&#160;


NVIDIA Corp

6.0


&#160;


Alphabet Inc Class A

4.3


&#160;


Meta Platforms Inc Class A

3.1


&#160;


Broadcom Inc

2.6


&#160;


Eli Lilly &amp; Co

1.9


&#160;


Visa Inc Class A

1.8


&#160;


Mastercard Inc Class A

1.5


&#160;


Home Depot Inc/The

1.5


&#160;


&#160;

35.7

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171934_TH_0_Member"
      decimals="INF"
      id="ixv-144611"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_1_Member"
      decimals="INF"
      id="ixv-144612"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_2_Member"
      decimals="INF"
      id="ixv-144613"
      unitRef="pure">0.060</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_3_Member"
      decimals="INF"
      id="ixv-144614"
      unitRef="pure">0.043</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_4_Member"
      decimals="INF"
      id="ixv-144615"
      unitRef="pure">0.031</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_5_Member"
      decimals="INF"
      id="ixv-144616"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_6_Member"
      decimals="INF"
      id="ixv-144617"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_7_Member"
      decimals="INF"
      id="ixv-144618"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_8_Member"
      decimals="INF"
      id="ixv-144619"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171934_TH_9_Member"
      decimals="INF"
      id="ixv-144620"
      unitRef="pure">0.015</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-4284">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000171932_ClassMember" id="ixv-4296">Fidelity&#xae; Low Volatility Factor ETF</oef:FundName>
    <oef:ClassName contextRef="C000171932_ClassMember" id="ixv-4299">Fidelity&#xae; Low Volatility Factor ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000171932_ClassMember" id="ixv-4303">FDLO</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000171932_ClassMember" id="ixv-144621">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000171932_ClassMember" id="ixv-4324">This semi-annual shareholder report contains information about Fidelity&#xae; Low Volatility Factor ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000171932_ClassMember" id="ixv-4326">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000171932_ClassMember" id="ixv-4331">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000171932_ClassMember" id="ixv-4333">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000171932_ClassMember" id="ixv-4336">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000171932_ClassMember" id="ixv-4339">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000171932_ClassMember" id="ixv-4346">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Low Volatility Factor ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000171932_ClassMember"
      decimals="0"
      id="ixv-144622"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000171932_ClassMember"
      decimals="INF"
      id="ixv-144623"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000171932_ClassMember" id="ixv-4386">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,379,630,808&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;130&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000171932_InstantMember"
      decimals="0"
      id="ixv-144624"
      unitRef="usd">1379630808</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000171932_InstantMember"
      decimals="INF"
      id="ixv-144625"
      unitRef="holding">130</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000171932_ClassMember"
      decimals="INF"
      id="ixv-144626"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000171932_ClassMember" id="ixv-4446">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

30.2

&#160;


Financials

14.3

&#160;


Consumer Discretionary

11.1

&#160;


Health Care

10.5

&#160;


Communication Services

8.9

&#160;


Industrials

8.8

&#160;


Consumer Staples

5.3

&#160;


Energy

3.6

&#160;


Materials

2.5

&#160;


Real Estate

2.4

&#160;


Utilities

2.2

&#160;


&#160;




Common Stocks

99.8


Short-Term Investments and Net Other Assets (Liabilities)

0.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.2


&#160;






United States

98.3


Ireland

1.7




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 98.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Ireland - 1.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171932_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144627"
      unitRef="pure">0.302</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144628"
      unitRef="pure">0.143</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144629"
      unitRef="pure">0.111</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144630"
      unitRef="pure">0.105</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144631"
      unitRef="pure">0.089</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144632"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144633"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144634"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144635"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144636"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144637"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144638"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144639"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_GD_US_Member"
      decimals="INF"
      id="ixv-144640"
      unitRef="pure">0.983</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_GD_IE_Member"
      decimals="INF"
      id="ixv-144641"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000171932_ClassMember" id="ixv-4681">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Apple Inc

7.5


&#160;


Microsoft Corp

6.9


&#160;


Alphabet Inc Class A

4.9


&#160;


Amazon.com Inc

4.5


&#160;


Berkshire Hathaway Inc Class B

2.1


&#160;


JPMorgan Chase &amp; Co

2.0


&#160;


IBM Corporation

1.9


&#160;


Oracle Corp

1.8


&#160;


Cisco Systems Inc

1.8


&#160;


Accenture PLC Class A

1.7


&#160;


&#160;

35.1

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171932_TH_0_Member"
      decimals="INF"
      id="ixv-144642"
      unitRef="pure">0.075</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_1_Member"
      decimals="INF"
      id="ixv-144643"
      unitRef="pure">0.069</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_2_Member"
      decimals="INF"
      id="ixv-144644"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_3_Member"
      decimals="INF"
      id="ixv-144645"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_4_Member"
      decimals="INF"
      id="ixv-144646"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_5_Member"
      decimals="INF"
      id="ixv-144647"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_6_Member"
      decimals="INF"
      id="ixv-144648"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_7_Member"
      decimals="INF"
      id="ixv-144649"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_8_Member"
      decimals="INF"
      id="ixv-144650"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171932_TH_9_Member"
      decimals="INF"
      id="ixv-144651"
      unitRef="pure">0.017</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-4852">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000171933_ClassMember" id="ixv-4864">Fidelity&#xae; Momentum Factor ETF</oef:FundName>
    <oef:ClassName contextRef="C000171933_ClassMember" id="ixv-4867">Fidelity&#xae; Momentum Factor ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000171933_ClassMember" id="ixv-4871">FDMO</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000171933_ClassMember" id="ixv-144652">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000171933_ClassMember" id="ixv-4892">This semi-annual shareholder report contains information about Fidelity&#xae; Momentum Factor ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000171933_ClassMember" id="ixv-4894">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000171933_ClassMember" id="ixv-4899">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000171933_ClassMember" id="ixv-4901">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000171933_ClassMember" id="ixv-4904">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000171933_ClassMember" id="ixv-4907">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000171933_ClassMember" id="ixv-4914">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Momentum Factor ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000171933_ClassMember"
      decimals="0"
      id="ixv-144653"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000171933_ClassMember"
      decimals="INF"
      id="ixv-144654"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000171933_ClassMember" id="ixv-4954">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;484,558,278&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;129&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;120&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000171933_InstantMember"
      decimals="0"
      id="ixv-144655"
      unitRef="usd">484558278</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000171933_InstantMember"
      decimals="INF"
      id="ixv-144656"
      unitRef="holding">129</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000171933_ClassMember"
      decimals="INF"
      id="ixv-144657"
      unitRef="pure">1.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000171933_ClassMember" id="ixv-5014">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

29.9

&#160;


Financials

14.9

&#160;


Consumer Discretionary

11.5

&#160;


Health Care

10.2

&#160;


Communication Services

9.3

&#160;


Industrials

8.8

&#160;


Consumer Staples

5.3

&#160;


Energy

3.2

&#160;


Materials

2.3

&#160;


Utilities

2.3

&#160;


Real Estate

2.2

&#160;


&#160;




Common Stocks

99.9


Short-Term Investments and Net Other Assets (Liabilities)

0.1




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.1


&#160;






United States

99.8


United Kingdom

0.2




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171933_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144658"
      unitRef="pure">0.299</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144659"
      unitRef="pure">0.149</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144660"
      unitRef="pure">0.115</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144661"
      unitRef="pure">0.102</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144662"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144663"
      unitRef="pure">0.088</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144664"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144665"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144666"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144667"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144668"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144669"
      unitRef="pure">0.999</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144670"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_GD_US_Member"
      decimals="INF"
      id="ixv-144671"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_GD_GB_Member"
      decimals="INF"
      id="ixv-144672"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000171933_ClassMember" id="ixv-5249">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Apple Inc

6.8


&#160;


Microsoft Corp

6.0


&#160;


NVIDIA Corp

5.7


&#160;


Amazon.com Inc

4.3


&#160;


Alphabet Inc Class A

4.0


&#160;


Meta Platforms Inc Class A

2.9


&#160;


Broadcom Inc

2.6


&#160;


Tesla Inc

2.5


&#160;


Berkshire Hathaway Inc Class B

2.1


&#160;


JPMorgan Chase &amp; Co

2.0


&#160;


&#160;

38.9

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000171933_TH_0_Member"
      decimals="INF"
      id="ixv-144673"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_1_Member"
      decimals="INF"
      id="ixv-144674"
      unitRef="pure">0.060</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_2_Member"
      decimals="INF"
      id="ixv-144675"
      unitRef="pure">0.057</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_3_Member"
      decimals="INF"
      id="ixv-144676"
      unitRef="pure">0.043</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_4_Member"
      decimals="INF"
      id="ixv-144677"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_5_Member"
      decimals="INF"
      id="ixv-144678"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_6_Member"
      decimals="INF"
      id="ixv-144679"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_7_Member"
      decimals="INF"
      id="ixv-144680"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_8_Member"
      decimals="INF"
      id="ixv-144681"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000171933_TH_9_Member"
      decimals="INF"
      id="ixv-144682"
      unitRef="pure">0.020</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-5420">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000215140_ClassMember" id="ixv-5432">Fidelity&#xae; Stocks for Inflation ETF</oef:FundName>
    <oef:ClassName contextRef="C000215140_ClassMember" id="ixv-5435">Fidelity&#xae; Stocks for Inflation ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000215140_ClassMember" id="ixv-5439">FCPI</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000215140_ClassMember" id="ixv-144683">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000215140_ClassMember" id="ixv-5460">This semi-annual shareholder report contains information about Fidelity&#xae; Stocks for Inflation ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000215140_ClassMember" id="ixv-5462">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000215140_ClassMember" id="ixv-5467">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000215140_ClassMember" id="ixv-5469">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000215140_ClassMember" id="ixv-5472">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000215140_ClassMember" id="ixv-5475">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000215140_ClassMember" id="ixv-5482">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Stocks for Inflation ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000215140_ClassMember"
      decimals="0"
      id="ixv-144684"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000215140_ClassMember"
      decimals="INF"
      id="ixv-144685"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000215140_ClassMember" id="ixv-5522">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;215,213,861&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;105&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;70&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000215140_InstantMember"
      decimals="0"
      id="ixv-144686"
      unitRef="usd">215213861</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000215140_InstantMember"
      decimals="INF"
      id="ixv-144687"
      unitRef="holding">105</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000215140_ClassMember"
      decimals="INF"
      id="ixv-144688"
      unitRef="pure">0.70</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000215140_ClassMember" id="ixv-5582">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

25.3

&#160;


Health Care

13.9

&#160;


Consumer Staples

10.2

&#160;


Financials

9.2

&#160;


Energy

8.6

&#160;


Utilities

7.1

&#160;


Materials

7.0

&#160;


Real Estate

5.2

&#160;


Consumer Discretionary

5.2

&#160;


Industrials

4.1

&#160;


Communication Services

4.0

&#160;


&#160;




Common Stocks

99.8


Short-Term Investments and Net Other Assets (Liabilities)

0.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.2


&#160;






United States

99.3


Bermuda

0.5


China

0.2




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 99.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bermuda - 0.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000215140_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144689"
      unitRef="pure">0.253</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144690"
      unitRef="pure">0.139</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144691"
      unitRef="pure">0.102</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144692"
      unitRef="pure">0.092</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144693"
      unitRef="pure">0.086</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144694"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144695"
      unitRef="pure">0.070</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144696"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144697"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144698"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144699"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144700"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144701"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_GD_US_Member"
      decimals="INF"
      id="ixv-144702"
      unitRef="pure">0.993</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_GD_BM_Member"
      decimals="INF"
      id="ixv-144703"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_GD_CN_Member"
      decimals="INF"
      id="ixv-144704"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000215140_ClassMember" id="ixv-5830">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Apple Inc

5.3


&#160;


Microsoft Corp

4.9


&#160;


NVIDIA Corp

4.7


&#160;


Vistra Corp

4.4


&#160;


Texas Pacific Land Corp

3.0


&#160;


CF Industries Holdings Inc

2.8


&#160;


NRG Energy Inc

2.7


&#160;


Steel Dynamics Inc

2.3


&#160;


Amazon.com Inc

2.3


&#160;


Antero Midstream Corp

2.2


&#160;


&#160;

34.6

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000215140_TH_0_Member"
      decimals="INF"
      id="ixv-144705"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_1_Member"
      decimals="INF"
      id="ixv-144706"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_2_Member"
      decimals="INF"
      id="ixv-144707"
      unitRef="pure">0.047</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_3_Member"
      decimals="INF"
      id="ixv-144708"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_4_Member"
      decimals="INF"
      id="ixv-144709"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_5_Member"
      decimals="INF"
      id="ixv-144710"
      unitRef="pure">0.028</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_6_Member"
      decimals="INF"
      id="ixv-144711"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_7_Member"
      decimals="INF"
      id="ixv-144712"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_8_Member"
      decimals="INF"
      id="ixv-144713"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000215140_TH_9_Member"
      decimals="INF"
      id="ixv-144714"
      unitRef="pure">0.022</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-6001">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000248142_ClassMember" id="ixv-6013">Fidelity&#xae; Fundamental Large Cap Value ETF</oef:FundName>
    <oef:ClassName contextRef="C000248142_ClassMember" id="ixv-6016">Fidelity&#xae; Fundamental Large Cap Value ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000248142_ClassMember" id="ixv-6020">FFLV</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000248142_ClassMember" id="ixv-144715">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000248142_ClassMember" id="ixv-6041">This semi-annual shareholder report contains information about Fidelity&#xae; Fundamental Large Cap Value ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000248142_ClassMember" id="ixv-6043">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000248142_ClassMember" id="ixv-6048">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000248142_ClassMember" id="ixv-6050">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000248142_ClassMember" id="ixv-6053">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000248142_ClassMember" id="ixv-6056">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000248142_ClassMember" id="ixv-6063">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Fundamental Large Cap Value ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000248142_ClassMember"
      decimals="0"
      id="ixv-144716"
      unitRef="usd">20</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000248142_ClassMember"
      decimals="INF"
      id="ixv-144717"
      unitRef="pure">0.0038</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000248142_ClassMember" id="ixv-6103">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;6,612,086&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;130&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;35&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000248142_InstantMember"
      decimals="0"
      id="ixv-144718"
      unitRef="usd">6612086</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000248142_InstantMember"
      decimals="INF"
      id="ixv-144719"
      unitRef="holding">130</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000248142_ClassMember"
      decimals="INF"
      id="ixv-144720"
      unitRef="pure">0.35</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000248142_ClassMember" id="ixv-6163">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Financials

21.1

&#160;


Health Care

15.7

&#160;


Industrials

14.0

&#160;


Energy

9.7

&#160;


Information Technology

9.4

&#160;


Consumer Staples

8.4

&#160;


Real Estate

5.3

&#160;


Communication Services

4.4

&#160;


Materials

4.4

&#160;


Utilities

3.7

&#160;


Consumer Discretionary

3.1

&#160;


&#160;




Common Stocks

99.2


Short-Term Investments and Net Other Assets (Liabilities)

0.8




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.8


&#160;






United States

94.9


Canada

1.9


United Kingdom

1.0


Spain

0.8


Taiwan

0.8


Bailiwick Of Jersey

0.4


France

0.2




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 94.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 1.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 1.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Spain - 0.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Taiwan - 0.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bailiwick Of Jersey - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

France - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000248142_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144721"
      unitRef="pure">0.211</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144722"
      unitRef="pure">0.157</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144723"
      unitRef="pure">0.140</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144724"
      unitRef="pure">0.097</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144725"
      unitRef="pure">0.094</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144726"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144727"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144728"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144729"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144730"
      unitRef="pure">0.037</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144731"
      unitRef="pure">0.031</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144732"
      unitRef="pure">0.992</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144733"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_GD_US_Member"
      decimals="INF"
      id="ixv-144734"
      unitRef="pure">0.949</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_GD_CA_Member"
      decimals="INF"
      id="ixv-144735"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_GD_GB_Member"
      decimals="INF"
      id="ixv-144736"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_GD_ES_Member"
      decimals="INF"
      id="ixv-144737"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_GD_TW_Member"
      decimals="INF"
      id="ixv-144738"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_GD_BailiwickOfJersey_Member"
      decimals="INF"
      id="ixv-144739"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_GD_FR_Member"
      decimals="INF"
      id="ixv-144740"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000248142_ClassMember" id="ixv-6463">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Exxon Mobil Corp

4.1


&#160;


Johnson &amp; Johnson

4.0


&#160;


Cisco Systems Inc

3.9


&#160;


Wells Fargo &amp; Co

3.5


&#160;


Bank of America Corp

3.2


&#160;


Hartford Financial Services Group Inc/The

2.8


&#160;


The Travelers Companies, Inc.

2.6


&#160;


US Foods Holding Corp

2.0


&#160;


Comcast Corp Class A

2.0


&#160;


Apollo Global Management Inc

1.9


&#160;


&#160;

30.0

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000248142_TH_0_Member"
      decimals="INF"
      id="ixv-144741"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_1_Member"
      decimals="INF"
      id="ixv-144742"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_2_Member"
      decimals="INF"
      id="ixv-144743"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_3_Member"
      decimals="INF"
      id="ixv-144744"
      unitRef="pure">0.035</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_4_Member"
      decimals="INF"
      id="ixv-144745"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_5_Member"
      decimals="INF"
      id="ixv-144746"
      unitRef="pure">0.028</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_6_Member"
      decimals="INF"
      id="ixv-144747"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_7_Member"
      decimals="INF"
      id="ixv-144748"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_8_Member"
      decimals="INF"
      id="ixv-144749"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000248142_TH_9_Member"
      decimals="INF"
      id="ixv-144750"
      unitRef="pure">0.019</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-6634">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000218329_ClassMember" id="ixv-6646">Fidelity&#xae; Blue Chip Growth ETF</oef:FundName>
    <oef:ClassName contextRef="C000218329_ClassMember" id="ixv-6649">Fidelity&#xae; Blue Chip Growth ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000218329_ClassMember" id="ixv-6653">FBCG</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000218329_ClassMember" id="ixv-144751">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000218329_ClassMember" id="ixv-6674">This semi-annual shareholder report contains information about Fidelity&#xae; Blue Chip Growth ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000218329_ClassMember" id="ixv-6676">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000218329_ClassMember" id="ixv-6681">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000218329_ClassMember" id="ixv-6683">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000218329_ClassMember" id="ixv-6686">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000218329_ClassMember" id="ixv-6689">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000218329_ClassMember" id="ixv-6696">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Blue Chip Growth ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;32&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.59&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000218329_ClassMember"
      decimals="0"
      id="ixv-144752"
      unitRef="usd">32</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000218329_ClassMember"
      decimals="INF"
      id="ixv-144753"
      unitRef="pure">0.0059</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000218329_ClassMember" id="ixv-6736">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;4,117,635,862&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;220&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;53&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000218329_InstantMember"
      decimals="0"
      id="ixv-144754"
      unitRef="usd">4117635862</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000218329_InstantMember"
      decimals="INF"
      id="ixv-144755"
      unitRef="holding">220</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000218329_ClassMember"
      decimals="INF"
      id="ixv-144756"
      unitRef="pure">0.53</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000218329_ClassMember" id="ixv-6796">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

41.9

&#160;


Consumer Discretionary

21.3

&#160;


Communication Services

18.0

&#160;


Health Care

6.1

&#160;


Financials

5.2

&#160;


Industrials

3.8

&#160;


Consumer Staples

1.2

&#160;


Materials

0.9

&#160;


Real Estate

0.5

&#160;


Energy

0.2

&#160;


&#160;




Common Stocks

99.1


Short-Term Investments and Net Other Assets (Liabilities)

0.9




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.9


&#160;






United States

95.6


China

1.5


Taiwan

0.9


Canada

0.8


Netherlands

0.2


Finland

0.2


United Kingdom

0.2


Israel

0.2


Germany

0.1


Others

0.3




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 95.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 1.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Taiwan - 0.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 0.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Netherlands - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Finland - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Israel - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Germany - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Others - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218329_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144757"
      unitRef="pure">0.419</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144758"
      unitRef="pure">0.213</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144759"
      unitRef="pure">0.180</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144760"
      unitRef="pure">0.061</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144761"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144762"
      unitRef="pure">0.038</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144763"
      unitRef="pure">0.012</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144764"
      unitRef="pure">0.009</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144765"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144766"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144767"
      unitRef="pure">0.991</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144768"
      unitRef="pure">0.009</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_US_Member"
      decimals="INF"
      id="ixv-144769"
      unitRef="pure">0.956</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_CN_Member"
      decimals="INF"
      id="ixv-144770"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_TW_Member"
      decimals="INF"
      id="ixv-144771"
      unitRef="pure">0.009</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_CA_Member"
      decimals="INF"
      id="ixv-144772"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_NL_Member"
      decimals="INF"
      id="ixv-144773"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_FI_Member"
      decimals="INF"
      id="ixv-144774"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_GB_Member"
      decimals="INF"
      id="ixv-144775"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_IL_Member"
      decimals="INF"
      id="ixv-144776"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_DE_Member"
      decimals="INF"
      id="ixv-144777"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_GD_Other_Member"
      decimals="INF"
      id="ixv-144778"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000218329_ClassMember" id="ixv-7126">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


NVIDIA Corp

11.6


&#160;


Apple Inc

10.1


&#160;


Amazon.com Inc

9.5


&#160;


Alphabet Inc Class A

7.7


&#160;


Microsoft Corp

6.5


&#160;


Meta Platforms Inc Class A

4.8


&#160;


Marvell Technology Inc

3.2


&#160;


Netflix Inc

2.7


&#160;


Eli Lilly &amp; Co

2.3


&#160;


Tesla Inc

1.8


&#160;


&#160;

60.2

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218329_TH_0_Member"
      decimals="INF"
      id="ixv-144779"
      unitRef="pure">0.116</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_1_Member"
      decimals="INF"
      id="ixv-144780"
      unitRef="pure">0.101</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_2_Member"
      decimals="INF"
      id="ixv-144781"
      unitRef="pure">0.095</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_3_Member"
      decimals="INF"
      id="ixv-144782"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_4_Member"
      decimals="INF"
      id="ixv-144783"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_5_Member"
      decimals="INF"
      id="ixv-144784"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_6_Member"
      decimals="INF"
      id="ixv-144785"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_7_Member"
      decimals="INF"
      id="ixv-144786"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_8_Member"
      decimals="INF"
      id="ixv-144787"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218329_TH_9_Member"
      decimals="INF"
      id="ixv-144788"
      unitRef="pure">0.018</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-7297">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000218331_ClassMember" id="ixv-7309">Fidelity&#xae; Blue Chip Value ETF</oef:FundName>
    <oef:ClassName contextRef="C000218331_ClassMember" id="ixv-7312">Fidelity&#xae; Blue Chip Value ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000218331_ClassMember" id="ixv-7316">FBCV</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000218331_ClassMember" id="ixv-144789">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000218331_ClassMember" id="ixv-7337">This semi-annual shareholder report contains information about Fidelity&#xae; Blue Chip Value ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000218331_ClassMember" id="ixv-7339">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000218331_ClassMember" id="ixv-7344">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000218331_ClassMember" id="ixv-7346">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000218331_ClassMember" id="ixv-7349">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000218331_ClassMember" id="ixv-7352">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000218331_ClassMember" id="ixv-7359">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Blue Chip Value ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.59&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000218331_ClassMember"
      decimals="0"
      id="ixv-144790"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000218331_ClassMember"
      decimals="INF"
      id="ixv-144791"
      unitRef="pure">0.0059</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000218331_ClassMember" id="ixv-7399">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;127,953,813&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;108&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;51&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000218331_InstantMember"
      decimals="0"
      id="ixv-144792"
      unitRef="usd">127953813</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000218331_InstantMember"
      decimals="INF"
      id="ixv-144793"
      unitRef="holding">108</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000218331_ClassMember"
      decimals="INF"
      id="ixv-144794"
      unitRef="pure">0.51</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000218331_ClassMember" id="ixv-7459">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Financials

26.2

&#160;


Health Care

15.9

&#160;


Industrials

13.1

&#160;


Consumer Staples

9.6

&#160;


Information Technology

7.7

&#160;


Energy

7.2

&#160;


Consumer Discretionary

4.9

&#160;


Communication Services

4.5

&#160;


Utilities

4.5

&#160;


Materials

3.2

&#160;


Real Estate

1.5

&#160;


&#160;




Common Stocks

98.3


Short-Term Investments and Net Other Assets (Liabilities)

1.7




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 98.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 1.7


&#160;






United States

93.3


United Kingdom

3.8


Canada

1.8


Germany

0.7


Sweden

0.2


Switzerland

0.1


China

0.1




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 93.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 3.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 1.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Germany - 0.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Sweden - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Switzerland - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218331_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144795"
      unitRef="pure">0.262</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144796"
      unitRef="pure">0.159</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144797"
      unitRef="pure">0.131</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144798"
      unitRef="pure">0.096</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144799"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144800"
      unitRef="pure">0.072</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144801"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144802"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144803"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144804"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144805"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144806"
      unitRef="pure">0.983</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144807"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_GD_US_Member"
      decimals="INF"
      id="ixv-144808"
      unitRef="pure">0.933</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_GD_GB_Member"
      decimals="INF"
      id="ixv-144809"
      unitRef="pure">0.038</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_GD_CA_Member"
      decimals="INF"
      id="ixv-144810"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_GD_DE_Member"
      decimals="INF"
      id="ixv-144811"
      unitRef="pure">0.007</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_GD_SE_Member"
      decimals="INF"
      id="ixv-144812"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_GD_CH_Member"
      decimals="INF"
      id="ixv-144813"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_GD_CN_Member"
      decimals="INF"
      id="ixv-144814"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000218331_ClassMember" id="ixv-7759">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


JPMorgan Chase &amp; Co

4.1


&#160;


Exxon Mobil Corp

4.0


&#160;


The Travelers Companies, Inc.

2.9


&#160;


UnitedHealth Group Inc

2.7


&#160;


Bank of America Corp

2.5


&#160;


Cisco Systems Inc

2.5


&#160;


Cigna Group/The

2.4


&#160;


Berkshire Hathaway Inc Class B

2.3


&#160;


Comcast Corp Class A

2.2


&#160;


Centene Corp

2.2


&#160;


&#160;

27.8

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218331_TH_0_Member"
      decimals="INF"
      id="ixv-144815"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_1_Member"
      decimals="INF"
      id="ixv-144816"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_2_Member"
      decimals="INF"
      id="ixv-144817"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_3_Member"
      decimals="INF"
      id="ixv-144818"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_4_Member"
      decimals="INF"
      id="ixv-144819"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_5_Member"
      decimals="INF"
      id="ixv-144820"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_6_Member"
      decimals="INF"
      id="ixv-144821"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_7_Member"
      decimals="INF"
      id="ixv-144822"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_8_Member"
      decimals="INF"
      id="ixv-144823"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218331_TH_9_Member"
      decimals="INF"
      id="ixv-144824"
      unitRef="pure">0.022</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-7930">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000223347_ClassMember" id="ixv-7942">Fidelity&#xae; Fundamental Small-Mid Cap ETF</oef:FundName>
    <oef:ClassName contextRef="C000223347_ClassMember" id="ixv-7945">Fidelity&#xae; Fundamental Small-Mid Cap ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000223347_ClassMember" id="ixv-7949">FFSM</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000223347_ClassMember" id="ixv-144825">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000223347_ClassMember" id="ixv-7970">This semi-annual shareholder report contains information about Fidelity&#xae; Fundamental Small-Mid Cap ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000223347_ClassMember" id="ixv-7972">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000223347_ClassMember" id="ixv-7977">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000223347_ClassMember" id="ixv-7979">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000223347_ClassMember" id="ixv-7982">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000223347_ClassMember" id="ixv-7985">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000223347_ClassMember" id="ixv-7992">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Fundamental Small-Mid Cap ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;23&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.44&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000223347_ClassMember"
      decimals="0"
      id="ixv-144826"
      unitRef="usd">23</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000223347_ClassMember"
      decimals="INF"
      id="ixv-144827"
      unitRef="pure">0.0044</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000223347_ClassMember" id="ixv-8032">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;747,869,672&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;204&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;45&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000223347_InstantMember"
      decimals="0"
      id="ixv-144828"
      unitRef="usd">747869672</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000223347_InstantMember"
      decimals="INF"
      id="ixv-144829"
      unitRef="holding">204</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000223347_ClassMember"
      decimals="INF"
      id="ixv-144830"
      unitRef="pure">0.45</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000223347_ClassMember" id="ixv-8092">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Industrials

22.2

&#160;


Financials

17.6

&#160;


Consumer Discretionary

12.5

&#160;


Information Technology

12.4

&#160;


Health Care

9.3

&#160;


Energy

6.5

&#160;


Materials

5.9

&#160;


Real Estate

5.1

&#160;


Consumer Staples

4.8

&#160;


Utilities

2.0

&#160;


Communication Services

0.6

&#160;


&#160;




Common Stocks

98.9


Short-Term Investments and Net Other Assets (Liabilities)

1.1




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 98.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 1.1


&#160;






United States

93.5


Canada

2.3


United Kingdom

1.6


Israel

1.1


Thailand

0.9


Puerto Rico

0.3


Japan

0.2


Netherlands

0.1




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 93.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 2.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 1.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Israel - 1.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Thailand - 0.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Puerto Rico - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Japan - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Netherlands - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223347_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144831"
      unitRef="pure">0.222</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144832"
      unitRef="pure">0.176</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144833"
      unitRef="pure">0.125</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144834"
      unitRef="pure">0.124</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144835"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144836"
      unitRef="pure">0.065</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144837"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144838"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144839"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144840"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144841"
      unitRef="pure">0.006</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144842"
      unitRef="pure">0.989</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144843"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_US_Member"
      decimals="INF"
      id="ixv-144844"
      unitRef="pure">0.935</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_CA_Member"
      decimals="INF"
      id="ixv-144845"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_GB_Member"
      decimals="INF"
      id="ixv-144846"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_IL_Member"
      decimals="INF"
      id="ixv-144847"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_TH_Member"
      decimals="INF"
      id="ixv-144848"
      unitRef="pure">0.009</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_PR_Member"
      decimals="INF"
      id="ixv-144849"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_JP_Member"
      decimals="INF"
      id="ixv-144850"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_GD_NL_Member"
      decimals="INF"
      id="ixv-144851"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000223347_ClassMember" id="ixv-8405">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Tempur Sealy International Inc

1.7


&#160;


EMCOR Group Inc

1.7


&#160;


TechnipFMC PLC

1.5


&#160;


Antero Resources Corp

1.5


&#160;


Eagle Materials Inc

1.5


&#160;


BJ's Wholesale Club Holdings Inc

1.5


&#160;


Murphy USA Inc

1.4


&#160;


US Foods Holding Corp

1.4


&#160;


Performance Food Group Co

1.3


&#160;


Discover Financial Services

1.3


&#160;


&#160;

14.8

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223347_TH_0_Member"
      decimals="INF"
      id="ixv-144852"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_1_Member"
      decimals="INF"
      id="ixv-144853"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_2_Member"
      decimals="INF"
      id="ixv-144854"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_3_Member"
      decimals="INF"
      id="ixv-144855"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_4_Member"
      decimals="INF"
      id="ixv-144856"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_5_Member"
      decimals="INF"
      id="ixv-144857"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_6_Member"
      decimals="INF"
      id="ixv-144858"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_7_Member"
      decimals="INF"
      id="ixv-144859"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_8_Member"
      decimals="INF"
      id="ixv-144860"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223347_TH_9_Member"
      decimals="INF"
      id="ixv-144861"
      unitRef="pure">0.013</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-8576">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000227887_ClassMember" id="ixv-8588">Fidelity&#xae; Sustainable U.S. Equity ETF</oef:FundName>
    <oef:ClassName contextRef="C000227887_ClassMember" id="ixv-8591">Fidelity&#xae; Sustainable U.S. Equity ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000227887_ClassMember" id="ixv-8595">FSST</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000227887_ClassMember" id="ixv-144862">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000227887_ClassMember" id="ixv-8616">This semi-annual shareholder report contains information about Fidelity&#xae; Sustainable U.S. Equity ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000227887_ClassMember" id="ixv-8618">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000227887_ClassMember" id="ixv-8623">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000227887_ClassMember" id="ixv-8625">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000227887_ClassMember" id="ixv-8628">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000227887_ClassMember" id="ixv-8631">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000227887_ClassMember" id="ixv-8638">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Sustainable U.S. Equity ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.59&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000227887_ClassMember"
      decimals="0"
      id="ixv-144863"
      unitRef="usd">31</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000227887_ClassMember"
      decimals="INF"
      id="ixv-144864"
      unitRef="pure">0.0059</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000227887_ClassMember" id="ixv-8678">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;15,837,967&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;157&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;39&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000227887_InstantMember"
      decimals="0"
      id="ixv-144865"
      unitRef="usd">15837967</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000227887_InstantMember"
      decimals="INF"
      id="ixv-144866"
      unitRef="holding">157</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000227887_ClassMember"
      decimals="INF"
      id="ixv-144867"
      unitRef="pure">0.39</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000227887_ClassMember" id="ixv-8738">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

27.7

&#160;


Consumer Discretionary

13.5

&#160;


Communication Services

12.5

&#160;


Financials

11.8

&#160;


Health Care

11.4

&#160;


Industrials

9.6

&#160;


Materials

3.1

&#160;


Energy

3.1

&#160;


Consumer Staples

2.6

&#160;


Utilities

2.3

&#160;


Real Estate

1.1

&#160;


&#160;




Common Stocks

98.7


Short-Term Investments and Net Other Assets (Liabilities)

1.3




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 98.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 1.3


&#160;






United States

97.6


Taiwan

0.8


Canada

0.5


China

0.5


Ireland

0.3


India

0.2


Brazil

0.1


Israel

0.0




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 97.6&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Taiwan - 0.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 0.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 0.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Ireland - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

India - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Brazil - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Israel - 0.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000227887_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144868"
      unitRef="pure">0.277</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144869"
      unitRef="pure">0.135</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144870"
      unitRef="pure">0.125</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144871"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144872"
      unitRef="pure">0.114</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144873"
      unitRef="pure">0.096</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144874"
      unitRef="pure">0.031</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144875"
      unitRef="pure">0.031</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144876"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144877"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144878"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144879"
      unitRef="pure">0.987</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144880"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_US_Member"
      decimals="INF"
      id="ixv-144881"
      unitRef="pure">0.976</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_TW_Member"
      decimals="INF"
      id="ixv-144882"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_CA_Member"
      decimals="INF"
      id="ixv-144883"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_CN_Member"
      decimals="INF"
      id="ixv-144884"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_IE_Member"
      decimals="INF"
      id="ixv-144885"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_IN_Member"
      decimals="INF"
      id="ixv-144886"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_BR_Member"
      decimals="INF"
      id="ixv-144887"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_GD_IL_Member"
      decimals="INF"
      id="ixv-144888"
      unitRef="pure">0.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000227887_ClassMember" id="ixv-9051">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Alphabet Inc Class A

7.1


&#160;


NVIDIA Corp

6.8


&#160;


Apple Inc

6.4


&#160;


Amazon.com Inc

5.8


&#160;


Microsoft Corp

5.4


&#160;


Meta Platforms Inc Class A

2.4


&#160;


Mastercard Inc Class A

2.0


&#160;


Netflix Inc

1.9


&#160;


Salesforce Inc

1.7


&#160;


Lowe's Cos Inc

1.6


&#160;


&#160;

41.1

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000227887_TH_0_Member"
      decimals="INF"
      id="ixv-144889"
      unitRef="pure">0.071</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_1_Member"
      decimals="INF"
      id="ixv-144890"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_2_Member"
      decimals="INF"
      id="ixv-144891"
      unitRef="pure">0.064</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_3_Member"
      decimals="INF"
      id="ixv-144892"
      unitRef="pure">0.058</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_4_Member"
      decimals="INF"
      id="ixv-144893"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_5_Member"
      decimals="INF"
      id="ixv-144894"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_6_Member"
      decimals="INF"
      id="ixv-144895"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_7_Member"
      decimals="INF"
      id="ixv-144896"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_8_Member"
      decimals="INF"
      id="ixv-144897"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000227887_TH_9_Member"
      decimals="INF"
      id="ixv-144898"
      unitRef="pure">0.016</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-9222">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000218330_ClassMember" id="ixv-9234">Fidelity&#xae; Fundamental Large Cap Core ETF</oef:FundName>
    <oef:ClassName contextRef="C000218330_ClassMember" id="ixv-9237">Fidelity&#xae; Fundamental Large Cap Core ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000218330_ClassMember" id="ixv-9241">FFLC</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000218330_ClassMember" id="ixv-144899">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000218330_ClassMember" id="ixv-9262">This semi-annual shareholder report contains information about Fidelity&#xae; Fundamental Large Cap Core ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000218330_ClassMember" id="ixv-9264">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000218330_ClassMember" id="ixv-9269">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000218330_ClassMember" id="ixv-9271">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000218330_ClassMember" id="ixv-9274">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000218330_ClassMember" id="ixv-9277">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000218330_ClassMember" id="ixv-9284">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Fundamental Large Cap Core ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;20&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.38&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000218330_ClassMember"
      decimals="0"
      id="ixv-144900"
      unitRef="usd">20</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000218330_ClassMember"
      decimals="INF"
      id="ixv-144901"
      unitRef="pure">0.0038</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000218330_ClassMember" id="ixv-9324">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;766,166,558&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;111&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;37&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000218330_InstantMember"
      decimals="0"
      id="ixv-144902"
      unitRef="usd">766166558</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000218330_InstantMember"
      decimals="INF"
      id="ixv-144903"
      unitRef="holding">111</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000218330_ClassMember"
      decimals="INF"
      id="ixv-144904"
      unitRef="pure">0.37</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000218330_ClassMember" id="ixv-9384">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

26.7

&#160;


Financials

15.0

&#160;


Communication Services

12.3

&#160;


Industrials

11.8

&#160;


Health Care

11.8

&#160;


Consumer Discretionary

9.8

&#160;


Energy

4.5

&#160;


Consumer Staples

3.5

&#160;


Utilities

1.7

&#160;


Materials

1.6

&#160;


Real Estate

1.0

&#160;


&#160;




Common Stocks

99.7


Short-Term Investments and Net Other Assets (Liabilities)

0.3




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.3


&#160;






United States

94.5


Germany

1.4


Taiwan

1.2


Canada

0.9


Netherlands

0.5


China

0.4


Belgium

0.3


Congo Democratic Republic Of

0.3


Zambia

0.3


Others

0.2




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 94.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Germany - 1.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Taiwan - 1.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 0.9&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Netherlands - 0.5&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

China - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Belgium - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Congo Democratic Republic Of - 0.3&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Zambia - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Others - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218330_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144905"
      unitRef="pure">0.267</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144906"
      unitRef="pure">0.150</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144907"
      unitRef="pure">0.123</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144908"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144909"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144910"
      unitRef="pure">0.098</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144911"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144912"
      unitRef="pure">0.035</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144913"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144914"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144915"
      unitRef="pure">0.010</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144916"
      unitRef="pure">0.997</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144917"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_US_Member"
      decimals="INF"
      id="ixv-144918"
      unitRef="pure">0.945</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_DE_Member"
      decimals="INF"
      id="ixv-144919"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_TW_Member"
      decimals="INF"
      id="ixv-144920"
      unitRef="pure">0.012</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_CA_Member"
      decimals="INF"
      id="ixv-144921"
      unitRef="pure">0.009</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_NL_Member"
      decimals="INF"
      id="ixv-144922"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_CN_Member"
      decimals="INF"
      id="ixv-144923"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_BE_Member"
      decimals="INF"
      id="ixv-144924"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_CongoDemocraticRepublicOf_Member"
      decimals="INF"
      id="ixv-144925"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_ZM_Member"
      decimals="INF"
      id="ixv-144926"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_GD_Other_Member"
      decimals="INF"
      id="ixv-144927"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000218330_ClassMember" id="ixv-9723">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


NVIDIA Corp

5.9


&#160;


Meta Platforms Inc Class A

5.5


&#160;


Alphabet Inc Class A

5.2


&#160;


Microsoft Corp

5.1


&#160;


Amazon.com Inc

4.1


&#160;


Apple Inc

3.8


&#160;


Exxon Mobil Corp

2.6


&#160;


Wells Fargo &amp; Co

2.5


&#160;


Bank of America Corp

2.4


&#160;


Broadcom Inc

2.4


&#160;


&#160;

39.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000218330_TH_0_Member"
      decimals="INF"
      id="ixv-144928"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_1_Member"
      decimals="INF"
      id="ixv-144929"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_2_Member"
      decimals="INF"
      id="ixv-144930"
      unitRef="pure">0.052</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_3_Member"
      decimals="INF"
      id="ixv-144931"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_4_Member"
      decimals="INF"
      id="ixv-144932"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_5_Member"
      decimals="INF"
      id="ixv-144933"
      unitRef="pure">0.038</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_6_Member"
      decimals="INF"
      id="ixv-144934"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_7_Member"
      decimals="INF"
      id="ixv-144935"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_8_Member"
      decimals="INF"
      id="ixv-144936"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000218330_TH_9_Member"
      decimals="INF"
      id="ixv-144937"
      unitRef="pure">0.024</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-9894">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000209803_ClassMember" id="ixv-9906">Fidelity&#xae; Small-Mid Multifactor ETF</oef:FundName>
    <oef:ClassName contextRef="C000209803_ClassMember" id="ixv-9909">Fidelity&#xae; Small-Mid Multifactor ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000209803_ClassMember" id="ixv-9913">FSMD</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000209803_ClassMember" id="ixv-144938">NYSEArca</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000209803_ClassMember" id="ixv-9934">This semi-annual shareholder report contains information about Fidelity&#xae; Small-Mid Multifactor ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000209803_ClassMember" id="ixv-9936">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000209803_ClassMember" id="ixv-9941">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000209803_ClassMember" id="ixv-9943">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000209803_ClassMember" id="ixv-9946">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000209803_ClassMember" id="ixv-9949">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000209803_ClassMember" id="ixv-9956">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Small-Mid Multifactor ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;8&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.15&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000209803_ClassMember"
      decimals="0"
      id="ixv-144939"
      unitRef="usd">8</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000209803_ClassMember"
      decimals="INF"
      id="ixv-144940"
      unitRef="pure">0.0015</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000209803_ClassMember" id="ixv-9996">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;774,256,311&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;598&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;52&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000209803_InstantMember"
      decimals="0"
      id="ixv-144941"
      unitRef="usd">774256311</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000209803_InstantMember"
      decimals="INF"
      id="ixv-144942"
      unitRef="holding">598</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000209803_ClassMember"
      decimals="INF"
      id="ixv-144943"
      unitRef="pure">0.52</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000209803_ClassMember" id="ixv-10056">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Industrials

20.0

&#160;


Financials

18.1

&#160;


Consumer Discretionary

12.9

&#160;


Health Care

12.7

&#160;


Information Technology

11.2

&#160;


Real Estate

6.1

&#160;


Materials

4.7

&#160;


Energy

4.5

&#160;


Consumer Staples

3.9

&#160;


Communication Services

3.2

&#160;


Utilities

2.5

&#160;


&#160;




Common Stocks

99.8


Short-Term Investments and Net Other Assets (Liabilities)

0.2




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.2


&#160;






United States

98.1


Puerto Rico

0.4


Bermuda

0.4


United Kingdom

0.3


Sweden

0.3


Thailand

0.2


Monaco

0.1


Canada

0.1


Ireland

0.1




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 98.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Puerto Rico - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Bermuda - 0.4&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

United Kingdom - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Sweden - 0.3&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Thailand - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Monaco - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Ireland - 0.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000209803_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-144944"
      unitRef="pure">0.200</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-144945"
      unitRef="pure">0.181</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-144946"
      unitRef="pure">0.129</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-144947"
      unitRef="pure">0.127</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-144948"
      unitRef="pure">0.112</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_RealEstateSectorMember"
      decimals="INF"
      id="ixv-144949"
      unitRef="pure">0.061</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-144950"
      unitRef="pure">0.047</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_EnergySectorMember"
      decimals="INF"
      id="ixv-144951"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-144952"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-144953"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_MS_UtilitiesSectorMember"
      decimals="INF"
      id="ixv-144954"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144955"
      unitRef="pure">0.998</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144956"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_US_Member"
      decimals="INF"
      id="ixv-144957"
      unitRef="pure">0.981</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_PR_Member"
      decimals="INF"
      id="ixv-144958"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_BM_Member"
      decimals="INF"
      id="ixv-144959"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_GB_Member"
      decimals="INF"
      id="ixv-144960"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_SE_Member"
      decimals="INF"
      id="ixv-144961"
      unitRef="pure">0.003</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_TH_Member"
      decimals="INF"
      id="ixv-144962"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_MC_Member"
      decimals="INF"
      id="ixv-144963"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_CA_Member"
      decimals="INF"
      id="ixv-144964"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_GD_IE_Member"
      decimals="INF"
      id="ixv-144965"
      unitRef="pure">0.001</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000209803_ClassMember" id="ixv-10382">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Natera Inc

0.6


&#160;


Texas Pacific Land Corp

0.5


&#160;


Interactive Brokers Group Inc Class A

0.5


&#160;


Live Nation Entertainment Inc

0.5


&#160;


NRG Energy Inc

0.5


&#160;


Pure Storage Inc Class A

0.4


&#160;


EMCOR Group Inc

0.4


&#160;


Tapestry Inc

0.4


&#160;


Guidewire Software Inc

0.4


&#160;


Duolingo Inc Class A

0.4


&#160;


&#160;

4.6

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000209803_TH_0_Member"
      decimals="INF"
      id="ixv-144966"
      unitRef="pure">0.006</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_1_Member"
      decimals="INF"
      id="ixv-144967"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_2_Member"
      decimals="INF"
      id="ixv-144968"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_3_Member"
      decimals="INF"
      id="ixv-144969"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_4_Member"
      decimals="INF"
      id="ixv-144970"
      unitRef="pure">0.005</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_5_Member"
      decimals="INF"
      id="ixv-144971"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_6_Member"
      decimals="INF"
      id="ixv-144972"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_7_Member"
      decimals="INF"
      id="ixv-144973"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_8_Member"
      decimals="INF"
      id="ixv-144974"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000209803_TH_9_Member"
      decimals="INF"
      id="ixv-144975"
      unitRef="pure">0.004</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-10553">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000223346_ClassMember" id="ixv-10565">Fidelity&#xae; Real Estate Investment ETF</oef:FundName>
    <oef:ClassName contextRef="C000223346_ClassMember" id="ixv-10568">Fidelity&#xae; Real Estate Investment ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000223346_ClassMember" id="ixv-10572">FPRO</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000223346_ClassMember" id="ixv-144976">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000223346_ClassMember" id="ixv-10593">This semi-annual shareholder report contains information about Fidelity&#xae; Real Estate Investment ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000223346_ClassMember" id="ixv-10595">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000223346_ClassMember" id="ixv-10600">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000223346_ClassMember" id="ixv-10602">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000223346_ClassMember" id="ixv-10605">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000223346_ClassMember" id="ixv-10608">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000223346_ClassMember" id="ixv-10615">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Real Estate Investment ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;30&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.59&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000223346_ClassMember"
      decimals="0"
      id="ixv-144977"
      unitRef="usd">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000223346_ClassMember"
      decimals="INF"
      id="ixv-144978"
      unitRef="pure">0.0059</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000223346_ClassMember" id="ixv-10655">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;14,739,181&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;43&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;43&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000223346_InstantMember"
      decimals="0"
      id="ixv-144979"
      unitRef="usd">14739181</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000223346_InstantMember"
      decimals="INF"
      id="ixv-144980"
      unitRef="holding">43</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000223346_ClassMember"
      decimals="INF"
      id="ixv-144981"
      unitRef="pure">0.43</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000223346_ClassMember" id="ixv-10715">
&#160;
&#160;
&#160;
TOP INDUSTRIES
(% of Fund's net assets)


Specialized REITs

30.8

&#160;


Residential REITs

17.6

&#160;


Industrial REITs

16.7

&#160;


Retail REITs

15.4

&#160;


Health Care REITs

10.6

&#160;


Real Estate Management &amp; Development

7.7

&#160;


Hotel &amp; Resort REITs

0.4

&#160;


&#160;




&#160;
Common Stocks

99.2


Short-Term Investments and Net Other Assets (Liabilities)

0.8




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 99.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 0.8


&#160;






United States

100.0




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 100.0&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223346_TI_0_Member"
      decimals="INF"
      id="ixv-144982"
      unitRef="pure">0.308</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TI_1_Member"
      decimals="INF"
      id="ixv-144983"
      unitRef="pure">0.176</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TI_2_Member"
      decimals="INF"
      id="ixv-144984"
      unitRef="pure">0.167</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TI_3_Member"
      decimals="INF"
      id="ixv-144985"
      unitRef="pure">0.154</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TI_4_Member"
      decimals="INF"
      id="ixv-144986"
      unitRef="pure">0.106</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TI_5_Member"
      decimals="INF"
      id="ixv-144987"
      unitRef="pure">0.077</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TI_6_Member"
      decimals="INF"
      id="ixv-144988"
      unitRef="pure">0.004</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-144989"
      unitRef="pure">0.992</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-144990"
      unitRef="pure">0.008</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_GD_US_Member"
      decimals="INF"
      id="ixv-144991"
      unitRef="pure">1.000</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000223346_ClassMember" id="ixv-10898">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Prologis Inc

11.3


&#160;


American Tower Corp

9.3


&#160;


Equinix Inc

8.3


&#160;


Welltower Inc

6.0


&#160;


CBRE Group Inc Class A

4.9


&#160;


Kimco Realty Corp

4.6


&#160;


Ventas Inc

4.6


&#160;


Public Storage Operating Co

3.9


&#160;


UDR Inc

3.9


&#160;


NNN REIT Inc

3.7


&#160;


&#160;

60.5

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223346_TH_0_Member"
      decimals="INF"
      id="ixv-144992"
      unitRef="pure">0.113</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_1_Member"
      decimals="INF"
      id="ixv-144993"
      unitRef="pure">0.093</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_2_Member"
      decimals="INF"
      id="ixv-144994"
      unitRef="pure">0.083</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_3_Member"
      decimals="INF"
      id="ixv-144995"
      unitRef="pure">0.060</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_4_Member"
      decimals="INF"
      id="ixv-144996"
      unitRef="pure">0.049</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_5_Member"
      decimals="INF"
      id="ixv-144997"
      unitRef="pure">0.046</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_6_Member"
      decimals="INF"
      id="ixv-144998"
      unitRef="pure">0.046</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_7_Member"
      decimals="INF"
      id="ixv-144999"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_8_Member"
      decimals="INF"
      id="ixv-145000"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223346_TH_9_Member"
      decimals="INF"
      id="ixv-145001"
      unitRef="pure">0.037</oef:PctOfNav>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-11069">2025-01-31</dei:DocumentPeriodEndDate>
    <oef:FundName contextRef="C000223345_ClassMember" id="ixv-11081">Fidelity&#xae; Magellan&#x2120; ETF</oef:FundName>
    <oef:ClassName contextRef="C000223345_ClassMember" id="ixv-11084">Fidelity&#xae; Magellan&#x2120; ETF</oef:ClassName>
    <dei:TradingSymbol contextRef="C000223345_ClassMember" id="ixv-11088">FMAG</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="C000223345_ClassMember" id="ixv-145002">CboeBZX</dei:SecurityExchangeName>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000223345_ClassMember" id="ixv-11109">This semi-annual shareholder report contains information about Fidelity&#xae; Magellan&#x2120; ETF for the period August 1, 2024 to January 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000223345_ClassMember" id="ixv-11111">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000223345_ClassMember" id="ixv-11116">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000223345_ClassMember" id="ixv-11118">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000223345_ClassMember" id="ixv-11121">1-800-FIDELITY</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000223345_ClassMember" id="ixv-11124">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000223345_ClassMember" id="ixv-11131">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last six months?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:45%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:45%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Magellan&#x2120; ETF&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:24%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;31&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:30%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.59&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000223345_ClassMember"
      decimals="0"
      id="ixv-145003"
      unitRef="usd">31</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000223345_ClassMember"
      decimals="INF"
      id="ixv-145004"
      unitRef="pure">0.0059</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock contextRef="C000223345_ClassMember" id="ixv-11171">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2025)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;197,211,121&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;54&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;62&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000223345_InstantMember"
      decimals="0"
      id="ixv-145005"
      unitRef="usd">197211121</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000223345_InstantMember"
      decimals="INF"
      id="ixv-145006"
      unitRef="holding">54</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000223345_ClassMember"
      decimals="INF"
      id="ixv-145007"
      unitRef="pure">0.62</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000223345_ClassMember" id="ixv-11231">
&#160;
&#160;
&#160;
MARKET SECTORS
(% of Fund's net assets)

&#160;

&#160;


Information Technology

30.9

&#160;


Industrials

17.3

&#160;


Financials

15.1

&#160;


Communication Services

11.6

&#160;


Consumer Discretionary

10.6

&#160;


Health Care

5.6

&#160;


Materials

5.1

&#160;


Consumer Staples

1.9

&#160;


&#160;




Common Stocks

98.1


Short-Term Investments and Net Other Assets (Liabilities)

1.9




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 98.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 1.9


&#160;






United States

97.8


Canada

1.1


Taiwan

1.1




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 97.8&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 1.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Taiwan - 1.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223345_MS_InformationTechnologySectorMember"
      decimals="INF"
      id="ixv-145008"
      unitRef="pure">0.309</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_MS_IndustrialSectorMember"
      decimals="INF"
      id="ixv-145009"
      unitRef="pure">0.173</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_MS_FinancialsSectorMember"
      decimals="INF"
      id="ixv-145010"
      unitRef="pure">0.151</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_MS_CommunicationsSectorMember"
      decimals="INF"
      id="ixv-145011"
      unitRef="pure">0.116</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_MS_ConsumerDiscretionarySectorMember"
      decimals="INF"
      id="ixv-145012"
      unitRef="pure">0.106</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_MS_HealthcareSectorMember"
      decimals="INF"
      id="ixv-145013"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_MS_MaterialsSectorMember"
      decimals="INF"
      id="ixv-145014"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_MS_ConsumerStaplesSectorMember"
      decimals="INF"
      id="ixv-145015"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-145016"
      unitRef="pure">0.981</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-145017"
      unitRef="pure">0.019</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_GD_US_Member"
      decimals="INF"
      id="ixv-145018"
      unitRef="pure">0.978</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_GD_CA_Member"
      decimals="INF"
      id="ixv-145019"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_GD_TW_Member"
      decimals="INF"
      id="ixv-145020"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000223345_ClassMember" id="ixv-11452">TOP HOLDINGS
(% of Fund's net assets)

&#160;

&#160;


Microsoft Corp

7.3


&#160;


NVIDIA Corp

6.8


&#160;


Amazon.com Inc

5.6


&#160;


Meta Platforms Inc Class A

4.4


&#160;


Broadcom Inc

3.6


&#160;


Alphabet Inc Class A

3.5


&#160;


JPMorgan Chase &amp; Co

2.5


&#160;


Eli Lilly &amp; Co

2.4


&#160;


Visa Inc Class A

2.4


&#160;


State Street Institutional Treasury Plus Money Market Fund Trust Class

2.2


&#160;


&#160;

40.7

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000223345_TH_0_Member"
      decimals="INF"
      id="ixv-145021"
      unitRef="pure">0.073</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_1_Member"
      decimals="INF"
      id="ixv-145022"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_2_Member"
      decimals="INF"
      id="ixv-145023"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_3_Member"
      decimals="INF"
      id="ixv-145024"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_4_Member"
      decimals="INF"
      id="ixv-145025"
      unitRef="pure">0.036</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_5_Member"
      decimals="INF"
      id="ixv-145026"
      unitRef="pure">0.035</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_6_Member"
      decimals="INF"
      id="ixv-145027"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_7_Member"
      decimals="INF"
      id="ixv-145028"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_8_Member"
      decimals="INF"
      id="ixv-145029"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000223345_TH_9_Member"
      decimals="INF"
      id="ixv-145030"
      unitRef="pure">0.022</oef:PctOfNav>
</xbrl>
