v3.26.3
Shareholder Report, Holdings (Details)
Aug. 31, 2026
Fidelity Sustainable High Yield ETF | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Sustainable High Yield ETF | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Sustainable High Yield ETF | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Sustainable High Yield ETF | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Sustainable High Yield ETF | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Sustainable High Yield ETF | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Sustainable High Yield ETF | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Sustainable High Yield ETF | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Sustainable High Yield ETF | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Sustainable High Yield ETF | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Sustainable High Yield ETF | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Sustainable High Yield ETF | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Sustainable High Yield ETF | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Sustainable High Yield ETF | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 50.40%
Fidelity Sustainable High Yield ETF | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.60%
Fidelity Sustainable High Yield ETF | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
Fidelity Sustainable High Yield ETF | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Sustainable High Yield ETF | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Sustainable High Yield ETF | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Sustainable High Yield ETF | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.90%
Fidelity Sustainable High Yield ETF | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Sustainable High Yield ETF | Ghana  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Sustainable High Yield ETF | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Sustainable High Yield ETF | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Sustainable High Yield ETF | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Sustainable High Yield ETF | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Sustainable High Yield ETF | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Sustainable High Yield ETF | Nigeria  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Sustainable High Yield ETF | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Sustainable High Yield ETF | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 87.20%
Fidelity Sustainable High Yield ETF | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Sustainable High Yield ETF | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Sustainable High Yield ETF | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Sustainable High Yield ETF | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Sustainable High Yield ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Preferred Securities & Income ETF | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Preferred Securities & Income ETF | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Preferred Securities & Income ETF | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Preferred Securities & Income ETF | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Preferred Securities & Income ETF | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Preferred Securities & Income ETF | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Preferred Securities & Income ETF | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Preferred Securities & Income ETF | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Preferred Securities & Income ETF | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Preferred Securities & Income ETF | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Preferred Securities & Income ETF | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Preferred Securities & Income ETF | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.50%
Fidelity Preferred Securities & Income ETF | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.40%
Fidelity Preferred Securities & Income ETF | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Preferred Securities & Income ETF | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Preferred Securities & Income ETF | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Preferred Securities & Income ETF | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.20%
Fidelity Preferred Securities & Income ETF | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Preferred Securities & Income ETF | United States  
Holdings [Line Items]  
Percent of Net Asset Value 85.60%
Fidelity Preferred Securities & Income ETF | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Fidelity Preferred Securities & Income ETF | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Preferred Securities & Income ETF | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Preferred Securities & Income ETF | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Preferred Securities & Income ETF | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Preferred Securities & Income ETF | Ireland  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Preferred Securities & Income ETF | Monaco  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Preferred Securities & Income ETF | Bermuda  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Preferred Securities & Income ETF | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 23.30%
Fidelity Preferred Securities & Income ETF | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.20%
Fidelity Preferred Securities & Income ETF | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.30%
Fidelity Preferred Securities & Income ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Enhanced High Yield ETF | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Enhanced High Yield ETF | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Enhanced High Yield ETF | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Enhanced High Yield ETF | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Enhanced High Yield ETF | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Enhanced High Yield ETF | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Enhanced High Yield ETF | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Enhanced High Yield ETF | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Enhanced High Yield ETF | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Enhanced High Yield ETF | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Enhanced High Yield ETF | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Enhanced High Yield ETF | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 38.50%
Fidelity Enhanced High Yield ETF | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 50.30%
Fidelity Enhanced High Yield ETF | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Fidelity Enhanced High Yield ETF | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Enhanced High Yield ETF | United States  
Holdings [Line Items]  
Percent of Net Asset Value 79.60%
Fidelity Enhanced High Yield ETF | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Enhanced High Yield ETF | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Enhanced High Yield ETF | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Enhanced High Yield ETF | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Enhanced High Yield ETF | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Enhanced High Yield ETF | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Enhanced High Yield ETF | Guatemala  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Enhanced High Yield ETF | Cameroon  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Enhanced High Yield ETF | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Enhanced High Yield ETF | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.80%
Fidelity Enhanced High Yield ETF | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Enhanced High Yield ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity CLO ETF | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity CLO ETF | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity CLO ETF | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity CLO ETF | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity CLO ETF | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity CLO ETF | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity CLO ETF | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity CLO ETF | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity CLO ETF | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity CLO ETF | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity CLO ETF | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity CLO ETF | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity CLO ETF | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.40%
Fidelity CLO ETF | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
Fidelity CLO ETF | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.50%
Fidelity CLO ETF | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity CLO ETF | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity CLO ETF | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Fidelity CLO ETF | United States  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity CLO ETF | Bermuda  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity CLO ETF | GrandCaymanUKOverseasTerMember  
Holdings [Line Items]  
Percent of Net Asset Value 79.40%
Fidelity CLO ETF | BailiwickOfJerseyMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
Fidelity CLO ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity CLO ETF | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
Fidelity CLO ETF | AACMOsandOtherMortgageRelatedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity CLO ETF | AAFixedIncomeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%