v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
Fidelity Intermediate Municipal Income Fund - ETF Class | TS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Intermediate Municipal Income Fund - ETF Class | TS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Intermediate Municipal Income Fund - ETF Class | TS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Intermediate Municipal Income Fund - ETF Class | TS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Intermediate Municipal Income Fund - ETF Class | TS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Intermediate Municipal Income Fund - ETF Class | RS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 41.20%
Fidelity Intermediate Municipal Income Fund - ETF Class | RS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Intermediate Municipal Income Fund - ETF Class | RS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Intermediate Municipal Income Fund - ETF Class | RS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Intermediate Municipal Income Fund - ETF Class | RS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Intermediate Municipal Income Fund - ETF Class | RS5Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.70%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Intermediate Municipal Income Fund - ETF Class | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Series International Developed Markets Bond Index Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Series International Developed Markets Bond Index Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Series International Developed Markets Bond Index Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Series International Developed Markets Bond Index Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Series International Developed Markets Bond Index Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Series International Developed Markets Bond Index Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Series International Developed Markets Bond Index Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Series International Developed Markets Bond Index Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Series International Developed Markets Bond Index Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Series International Developed Markets Bond Index Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Series International Developed Markets Bond Index Fund | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Series International Developed Markets Bond Index Fund | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Series International Developed Markets Bond Index Fund | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.00%
Fidelity Series International Developed Markets Bond Index Fund | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Series International Developed Markets Bond Index Fund | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Series International Developed Markets Bond Index Fund | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Series International Developed Markets Bond Index Fund | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Series International Developed Markets Bond Index Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Series International Developed Markets Bond Index Fund | France  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Series International Developed Markets Bond Index Fund | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Series International Developed Markets Bond Index Fund | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Series International Developed Markets Bond Index Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Series International Developed Markets Bond Index Fund | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Series International Developed Markets Bond Index Fund | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Series International Developed Markets Bond Index Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Series International Developed Markets Bond Index Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Series International Developed Markets Bond Index Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 38.30%
Fidelity Series International Developed Markets Bond Index Fund | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
Fidelity Series International Developed Markets Bond Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Series International Credit Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
Fidelity Series International Credit Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Series International Credit Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Series International Credit Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Series International Credit Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Series International Credit Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Series International Credit Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Series International Credit Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Series International Credit Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Series International Credit Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Series International Credit Fund | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Series International Credit Fund | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Series International Credit Fund | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.50%
Fidelity Series International Credit Fund | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 32.40%
Fidelity Series International Credit Fund | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Series International Credit Fund | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Series International Credit Fund | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Series International Credit Fund | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Fidelity Series International Credit Fund | QDUSGovernmentandUSGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.50%
Fidelity Series International Credit Fund | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Series International Credit Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Series International Credit Fund | France  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Series International Credit Fund | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Series International Credit Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 17.30%
Fidelity Series International Credit Fund | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Series International Credit Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
Fidelity Series International Credit Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 33.20%
Fidelity Series International Credit Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Series International Credit Fund | MultinationalMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Series International Credit Fund | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Series International Credit Fund | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
Fidelity Series International Credit Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Fidelity Series International Credit Fund | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.30%
Fidelity Series International Credit Fund | AAUSTreasuryObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.50%
Fidelity Series International Credit Fund | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Intermediate Municipal Income Fund | TS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Intermediate Municipal Income Fund | TS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Intermediate Municipal Income Fund | TS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Intermediate Municipal Income Fund | TS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Intermediate Municipal Income Fund | TS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Intermediate Municipal Income Fund | RS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 41.20%
Fidelity Intermediate Municipal Income Fund | RS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Intermediate Municipal Income Fund | RS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Intermediate Municipal Income Fund | RS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Intermediate Municipal Income Fund | RS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Intermediate Municipal Income Fund | RS5Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Intermediate Municipal Income Fund | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Intermediate Municipal Income Fund | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
Fidelity Intermediate Municipal Income Fund | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.70%
Fidelity Intermediate Municipal Income Fund | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Intermediate Municipal Income Fund | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Intermediate Municipal Income Fund | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Intermediate Municipal Income Fund | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Intermediate Municipal Income Fund | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | TS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | TS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | TS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | TS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | TS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | RS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 41.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | RS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | RS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | RS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | RS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | RS5Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class Z | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | TS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | TS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | TS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | TS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | TS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | RS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 41.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | RS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | RS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | RS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | RS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | RS5Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class M | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | TS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | TS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | TS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | TS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | TS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | RS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 41.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | RS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | RS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | RS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | RS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | RS5Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class I | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | TS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | TS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | TS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | TS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | TS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | RS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 41.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | RS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | RS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | RS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | RS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | RS5Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class C | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | TS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | TS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | TS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | TS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | TS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | RS0Member  
Holdings [Line Items]  
Percent of Net Asset Value 41.20%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | RS1Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | RS2Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | RS3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | RS4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | RS5Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDAAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDAAMember  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Intermediate Municipal Income Fund - Class A | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Multi-Asset Income Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.00%
Fidelity Multi-Asset Income Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Multi-Asset Income Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Multi-Asset Income Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Multi-Asset Income Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Multi-Asset Income Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Multi-Asset Income Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Multi-Asset Income Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Multi-Asset Income Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Multi-Asset Income Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Multi-Asset Income Fund | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Multi-Asset Income Fund | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Multi-Asset Income Fund | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Multi-Asset Income Fund | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Multi-Asset Income Fund | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Multi-Asset Income Fund | QDUSGovernmentandUSGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Multi-Asset Income Fund | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Multi-Asset Income Fund | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.20%
Fidelity Multi-Asset Income Fund | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Multi-Asset Income Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Multi-Asset Income Fund | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Fidelity Multi-Asset Income Fund | AAUSTreasuryObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Multi-Asset Income Fund | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Multi-Asset Income Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 45.60%
Fidelity Multi-Asset Income Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Multi-Asset Income Fund | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Multi-Asset Income Fund | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Multi-Asset Income Fund | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.00%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDUSGovernmentandUSGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Multi-Asset Income Fund - Class Z | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.20%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AAUSTreasuryObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 45.60%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Multi-Asset Income Fund - Class Z | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.00%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDUSGovernmentandUSGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Multi-Asset Income Fund - Class M | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.20%
Fidelity Advisor Multi-Asset Income Fund - Class M | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Multi-Asset Income Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class M | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Fidelity Advisor Multi-Asset Income Fund - Class M | AAUSTreasuryObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class M | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Multi-Asset Income Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 45.60%
Fidelity Advisor Multi-Asset Income Fund - Class M | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Multi-Asset Income Fund - Class M | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Multi-Asset Income Fund - Class M | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Multi-Asset Income Fund - Class M | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.00%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDUSGovernmentandUSGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Multi-Asset Income Fund - Class I | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.20%
Fidelity Advisor Multi-Asset Income Fund - Class I | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Multi-Asset Income Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class I | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Fidelity Advisor Multi-Asset Income Fund - Class I | AAUSTreasuryObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class I | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Multi-Asset Income Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 45.60%
Fidelity Advisor Multi-Asset Income Fund - Class I | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Multi-Asset Income Fund - Class I | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Multi-Asset Income Fund - Class I | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Multi-Asset Income Fund - Class I | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.00%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDUSGovernmentandUSGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Multi-Asset Income Fund - Class C | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.20%
Fidelity Advisor Multi-Asset Income Fund - Class C | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Multi-Asset Income Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class C | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Fidelity Advisor Multi-Asset Income Fund - Class C | AAUSTreasuryObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class C | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Multi-Asset Income Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 45.60%
Fidelity Advisor Multi-Asset Income Fund - Class C | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Multi-Asset Income Fund - Class C | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Multi-Asset Income Fund - Class C | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Multi-Asset Income Fund - Class C | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.00%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor Multi-Asset Income Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDUSGovernmentandUSGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Multi-Asset Income Fund - Class A | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.20%
Fidelity Advisor Multi-Asset Income Fund - Class A | AAForeignGovernmentandGovernmentAgencyObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Multi-Asset Income Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Multi-Asset Income Fund - Class A | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Fidelity Advisor Multi-Asset Income Fund - Class A | AAUSTreasuryObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
Fidelity Advisor Multi-Asset Income Fund - Class A | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Multi-Asset Income Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 45.60%
Fidelity Advisor Multi-Asset Income Fund - Class A | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Multi-Asset Income Fund - Class A | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Multi-Asset Income Fund - Class A | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Multi-Asset Income Fund - Class A | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%