v3.25.2
Shareholder Report, Holdings (Details)
Apr. 30, 2025
Fidelity Floating Rate High Income Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Floating Rate High Income Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Floating Rate High Income Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Floating Rate High Income Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Floating Rate High Income Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Floating Rate High Income Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Floating Rate High Income Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Floating Rate High Income Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Floating Rate High Income Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Floating Rate High Income Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Floating Rate High Income Fund | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Floating Rate High Income Fund | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Floating Rate High Income Fund | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.40%
Fidelity Floating Rate High Income Fund | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
Fidelity Floating Rate High Income Fund | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
Fidelity Floating Rate High Income Fund | QDDMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Floating Rate High Income Fund | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Floating Rate High Income Fund | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Floating Rate High Income Fund | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Floating Rate High Income Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.70%
Fidelity Floating Rate High Income Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Floating Rate High Income Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Floating Rate High Income Fund | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Floating Rate High Income Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Floating Rate High Income Fund | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Floating Rate High Income Fund | GrandCaymanUKOverseasTerMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Floating Rate High Income Fund | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Floating Rate High Income Fund | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Floating Rate High Income Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Floating Rate High Income Fund | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 88.00%
Fidelity Floating Rate High Income Fund | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Floating Rate High Income Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Floating Rate High Income Fund | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Floating Rate High Income Fund | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Floating Rate High Income Fund | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Floating Rate High Income Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Value Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Value Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Value Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Value Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class M | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
Fidelity Advisor Value Fund - Class M | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Value Fund - Class M | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Value Fund - Class M | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Value Fund - Class M | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Fidelity Advisor Value Fund - Class M | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
Fidelity Advisor Value Fund - Class M | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
Fidelity Advisor Value Fund - Class M | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class M | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Value Fund - Class M | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Value Fund - Class M | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Value Fund - Class M | United States  
Holdings [Line Items]  
Percent of Net Asset Value 87.20%
Fidelity Advisor Value Fund - Class M | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class M | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class M | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class M | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class M | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class M | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Value Fund - Class M | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class M | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class M | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Value Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.80%
Fidelity Advisor Value Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Capital & Income Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Capital & Income Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Capital & Income Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Capital & Income Fund - Class Z | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Capital & Income Fund - Class Z | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Capital & Income Fund - Class Z | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
Fidelity Advisor Capital & Income Fund - Class Z | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
Fidelity Advisor Capital & Income Fund - Class Z | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Capital & Income Fund - Class Z | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Capital & Income Fund - Class Z | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Capital & Income Fund - Class Z | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Capital & Income Fund - Class Z | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.80%
Fidelity Advisor Capital & Income Fund - Class Z | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Capital & Income Fund - Class Z | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Capital & Income Fund - Class Z | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class Z | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class Z | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class Z | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class Z | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class Z | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class Z | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class Z | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
Fidelity Advisor Capital & Income Fund - Class Z | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 52.70%
Fidelity Advisor Capital & Income Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Capital & Income Fund - Class Z | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class Z | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Capital & Income Fund - Class Z | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Value Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Value Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Value Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Value Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class Z | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
Fidelity Advisor Value Fund - Class Z | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Value Fund - Class Z | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Value Fund - Class Z | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Value Fund - Class Z | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Fidelity Advisor Value Fund - Class Z | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
Fidelity Advisor Value Fund - Class Z | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
Fidelity Advisor Value Fund - Class Z | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class Z | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Value Fund - Class Z | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Value Fund - Class Z | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Value Fund - Class Z | United States  
Holdings [Line Items]  
Percent of Net Asset Value 87.20%
Fidelity Advisor Value Fund - Class Z | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class Z | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class Z | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class Z | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class Z | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class Z | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Value Fund - Class Z | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class Z | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class Z | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Value Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.80%
Fidelity Advisor Value Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Capital & Income Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Capital & Income Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Capital & Income Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Capital & Income Fund - Class A | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Capital & Income Fund - Class A | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Capital & Income Fund - Class A | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
Fidelity Advisor Capital & Income Fund - Class A | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
Fidelity Advisor Capital & Income Fund - Class A | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Capital & Income Fund - Class A | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Capital & Income Fund - Class A | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Capital & Income Fund - Class A | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Capital & Income Fund - Class A | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.80%
Fidelity Advisor Capital & Income Fund - Class A | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Capital & Income Fund - Class A | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Capital & Income Fund - Class A | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class A | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class A | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class A | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class A | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class A | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class A | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class A | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
Fidelity Advisor Capital & Income Fund - Class A | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 52.70%
Fidelity Advisor Capital & Income Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Capital & Income Fund - Class A | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class A | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Capital & Income Fund - Class A | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.40%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDDMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Floating Rate High Income Fund - Class M | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Floating Rate High Income Fund - Class M | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.70%
Fidelity Advisor Floating Rate High Income Fund - Class M | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Floating Rate High Income Fund - Class M | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Floating Rate High Income Fund - Class M | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class M | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class M | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class M | GrandCaymanUKOverseasTerMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Floating Rate High Income Fund - Class M | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class M | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class M | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class M | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 88.00%
Fidelity Advisor Floating Rate High Income Fund - Class M | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Floating Rate High Income Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Floating Rate High Income Fund - Class M | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class M | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class M | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Capital & Income Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Capital & Income Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Capital & Income Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Capital & Income Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Capital & Income Fund - Class C | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Capital & Income Fund - Class C | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Capital & Income Fund - Class C | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
Fidelity Advisor Capital & Income Fund - Class C | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
Fidelity Advisor Capital & Income Fund - Class C | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Capital & Income Fund - Class C | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Capital & Income Fund - Class C | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Capital & Income Fund - Class C | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Capital & Income Fund - Class C | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.80%
Fidelity Advisor Capital & Income Fund - Class C | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Capital & Income Fund - Class C | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Capital & Income Fund - Class C | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class C | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class C | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class C | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class C | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class C | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class C | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class C | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
Fidelity Advisor Capital & Income Fund - Class C | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 52.70%
Fidelity Advisor Capital & Income Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Capital & Income Fund - Class C | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class C | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Capital & Income Fund - Class C | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.40%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDDMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Floating Rate High Income Fund - Class I | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Floating Rate High Income Fund - Class I | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.70%
Fidelity Advisor Floating Rate High Income Fund - Class I | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Floating Rate High Income Fund - Class I | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Floating Rate High Income Fund - Class I | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class I | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class I | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class I | GrandCaymanUKOverseasTerMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Floating Rate High Income Fund - Class I | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class I | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class I | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class I | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 88.00%
Fidelity Advisor Floating Rate High Income Fund - Class I | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Floating Rate High Income Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Floating Rate High Income Fund - Class I | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class I | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class I | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Value Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Value Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Value Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Value Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class A | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
Fidelity Advisor Value Fund - Class A | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Value Fund - Class A | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Value Fund - Class A | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Value Fund - Class A | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Fidelity Advisor Value Fund - Class A | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
Fidelity Advisor Value Fund - Class A | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
Fidelity Advisor Value Fund - Class A | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class A | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Value Fund - Class A | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Value Fund - Class A | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Value Fund - Class A | United States  
Holdings [Line Items]  
Percent of Net Asset Value 87.20%
Fidelity Advisor Value Fund - Class A | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class A | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class A | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class A | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class A | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class A | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Value Fund - Class A | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class A | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class A | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Value Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.80%
Fidelity Advisor Value Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.40%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDDMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Floating Rate High Income Fund - Class C | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Floating Rate High Income Fund - Class C | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.70%
Fidelity Advisor Floating Rate High Income Fund - Class C | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Floating Rate High Income Fund - Class C | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Floating Rate High Income Fund - Class C | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class C | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class C | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class C | GrandCaymanUKOverseasTerMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Floating Rate High Income Fund - Class C | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class C | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class C | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class C | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 88.00%
Fidelity Advisor Floating Rate High Income Fund - Class C | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Floating Rate High Income Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Floating Rate High Income Fund - Class C | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class C | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class C | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Capital & Income Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Capital & Income Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Capital & Income Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Capital & Income Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Capital & Income Fund - Class M | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Capital & Income Fund - Class M | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Capital & Income Fund - Class M | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
Fidelity Advisor Capital & Income Fund - Class M | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
Fidelity Advisor Capital & Income Fund - Class M | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Capital & Income Fund - Class M | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Capital & Income Fund - Class M | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Capital & Income Fund - Class M | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Capital & Income Fund - Class M | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.80%
Fidelity Advisor Capital & Income Fund - Class M | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Capital & Income Fund - Class M | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Capital & Income Fund - Class M | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class M | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class M | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class M | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class M | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class M | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class M | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class M | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
Fidelity Advisor Capital & Income Fund - Class M | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 52.70%
Fidelity Advisor Capital & Income Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Capital & Income Fund - Class M | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class M | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Capital & Income Fund - Class M | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Capital & Income Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Advisor Capital & Income Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Capital & Income Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Capital & Income Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Capital & Income Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Capital & Income Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Capital & Income Fund - Class I | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Capital & Income Fund - Class I | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Capital & Income Fund - Class I | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
Fidelity Advisor Capital & Income Fund - Class I | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
Fidelity Advisor Capital & Income Fund - Class I | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Capital & Income Fund - Class I | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Capital & Income Fund - Class I | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Capital & Income Fund - Class I | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Capital & Income Fund - Class I | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.80%
Fidelity Advisor Capital & Income Fund - Class I | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Capital & Income Fund - Class I | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Capital & Income Fund - Class I | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class I | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class I | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class I | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Capital & Income Fund - Class I | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Capital & Income Fund - Class I | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Capital & Income Fund - Class I | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class I | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
Fidelity Advisor Capital & Income Fund - Class I | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 52.70%
Fidelity Advisor Capital & Income Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.60%
Fidelity Advisor Capital & Income Fund - Class I | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Capital & Income Fund - Class I | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Capital & Income Fund - Class I | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Capital & Income Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Advisor Value Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Value Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Value Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Value Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class I | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
Fidelity Advisor Value Fund - Class I | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Value Fund - Class I | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Value Fund - Class I | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Value Fund - Class I | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Fidelity Advisor Value Fund - Class I | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
Fidelity Advisor Value Fund - Class I | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
Fidelity Advisor Value Fund - Class I | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class I | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Value Fund - Class I | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Value Fund - Class I | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Value Fund - Class I | United States  
Holdings [Line Items]  
Percent of Net Asset Value 87.20%
Fidelity Advisor Value Fund - Class I | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class I | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class I | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class I | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class I | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class I | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Value Fund - Class I | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class I | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class I | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Value Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.80%
Fidelity Advisor Value Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Value Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Value Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Value Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Value Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class C | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
Fidelity Advisor Value Fund - Class C | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Value Fund - Class C | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Value Fund - Class C | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Value Fund - Class C | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Fidelity Advisor Value Fund - Class C | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
Fidelity Advisor Value Fund - Class C | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
Fidelity Advisor Value Fund - Class C | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class C | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Value Fund - Class C | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Value Fund - Class C | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Value Fund - Class C | United States  
Holdings [Line Items]  
Percent of Net Asset Value 87.20%
Fidelity Advisor Value Fund - Class C | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class C | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Value Fund - Class C | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class C | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class C | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Value Fund - Class C | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Value Fund - Class C | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Value Fund - Class C | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Value Fund - Class C | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Value Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.80%
Fidelity Advisor Value Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.40%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDDMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Floating Rate High Income Fund - Class Z | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Floating Rate High Income Fund - Class Z | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.70%
Fidelity Advisor Floating Rate High Income Fund - Class Z | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Floating Rate High Income Fund - Class Z | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Floating Rate High Income Fund - Class Z | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class Z | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class Z | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class Z | GrandCaymanUKOverseasTerMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Floating Rate High Income Fund - Class Z | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class Z | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class Z | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class Z | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 88.00%
Fidelity Advisor Floating Rate High Income Fund - Class Z | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Floating Rate High Income Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Floating Rate High Income Fund - Class Z | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class Z | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class Z | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDAMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDBBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDBBMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.40%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDBMember  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDCCCCCCMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDDMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDNotRatedMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDEquitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | United States  
Holdings [Line Items]  
Percent of Net Asset Value 90.70%
Fidelity Advisor Floating Rate High Income Fund - Class A | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Floating Rate High Income Fund - Class A | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Floating Rate High Income Fund - Class A | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Floating Rate High Income Fund - Class A | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Floating Rate High Income Fund - Class A | Puerto Rico  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class A | GrandCaymanUKOverseasTerMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Floating Rate High Income Fund - Class A | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class A | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class A | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class A | AABankLoanObligationsMember  
Holdings [Line Items]  
Percent of Net Asset Value 88.00%
Fidelity Advisor Floating Rate High Income Fund - Class A | AACorporateBondsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Floating Rate High Income Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Floating Rate High Income Fund - Class A | AAAlternativeFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Floating Rate High Income Fund - Class A | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Floating Rate High Income Fund - Class A | AAAssetBackedSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Floating Rate High Income Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%