No Trading Symbol Flag Consumer Discretionary Sector Member Consumer Staples Sector Member Industrial Sector Member Materials Sector Member Utilities Sector Member Unclassified Sector Member Information Technology Member Healthcare Sector [Member] Healthcare Sector Communications Sector Member Financial Services Sector [Member] Financial Services Sector Real Estate Sector [Member] Real Estate Sector Technology Sector [Member] Technology Sector Agricultural Sector [Member] Agricultural Sector Member Energy Sector [Member] Energy Sector Net Assets Investment Type [Axis] Investment Type Categorization [Member] Investment Company Portfolio Turnover C000222143 [Member] Fidelity Emerging Markets Debt Local Currency Central Fund Fidelity Emerging Markets Debt Local Currency Central Fund C000101068 [Member] Fidelity Emerging Markets Debt Central Fund Fidelity Emerging Markets Debt Central Fund United States United States Mexico Mexico Brazil Brazil India India Indonesia Indonesia South Africa South Africa Poland Poland Malaysia Malaysia Colombia Colombia OtherMember Saudi Arabia Saudi Arabia Argentina Argentina United Arab Emirates United Arab Emirates Turkey Turkey Chile Chile QDUSGovernmentandUSGovernmentAgencyObligationsMember [Member] QDUSGovernmentandUSGovernmentAgencyObligationsMember QDUSGovernmentandUSGovernmentAgencyObligationsMember QDAAAMember [Member] QDAAAMember QDAAAMember QDAAMember [Member] QDAAMember QDAAMember QDAMember [Member] QDAMember QDAMember QDBBBMember [Member] QDBBBMember QDBBBMember QDBBMember [Member] QDBBMember QDBBMember QDNotRatedMember [Member] QDNotRatedMember QDNotRatedMember QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember [Member] QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember QDShortTermInvestmentsandNetOtherAssetsLiabilitiesMember AAForeignGovernmentandGovernmentAgencyObligationsMember [Member] AAForeignGovernmentandGovernmentAgencyObligationsMember AAForeignGovernmentandGovernmentAgencyObligationsMember AACorporateBondsMember [Member] AACorporateBondsMember AACorporateBondsMember AAUSTreasuryObligationsMember [Member] AAUSTreasuryObligationsMember AAUSTreasuryObligationsMember AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember [Member] AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember TH0Member [Member] TH0Member TH0Member TH1Member [Member] TH1Member TH1Member TH2Member [Member] TH2Member TH2Member TH3Member [Member] TH3Member TH3Member TH4Member [Member] TH4Member TH4Member TH5Member [Member] TH5Member TH5Member TH6Member [Member] TH6Member TH6Member TH7Member [Member] TH7Member TH7Member TH8Member [Member] TH8Member TH8Member TH9Member [Member] TH9Member TH9Member QDBMember [Member] QDBMember QDBMember QDCCCCCCMember [Member] QDCCCCCCMember QDCCCCCCMember QDDMember [Member] QDDMember QDDMember QDEquitiesMember [Member] QDEquitiesMember QDEquitiesMember AAPreferredSecuritiesMember [Member] AAPreferredSecuritiesMember AAPreferredSecuritiesMember AAPreferredStocksMember [Member] AAPreferredStocksMember AAPreferredStocksMember AACommonStocksMember [Member] AACommonStocksMember AACommonStocksMember AABankLoanObligationsMember [Member] AABankLoanObligationsMember AABankLoanObligationsMember