Risk/Return Summary - FidelitySeriesEmergingMarketsDebtFunds-ComboPRO - FidelitySeriesEmergingMarketsDebtFunds-ComboPRO - Fidelity Series Emerging Markets Debt Local Currency Fund	Dec. 31, 2022
Risk/Return:
Supplement to Prospectus [Text Block]	Fidelity® Series Emerging Markets Debt Local Currency Fund
Fidelity Series Emerging Markets Debt Local Currency Fund
Risk/Return:
Strategy Narrative [Text Block]	Investing up to 20% of the fund's net assets in securities that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - to adjust the fund's risk exposure - as well as forward foreign currency exchange contracts for both hedging and non-hedging purposes.
Risk Narrative [Text Block]	Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

Narrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References

No definition available.

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- Definition

Principal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Number N-1A
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- Definition

This element contains the text of a prospectus supplement (submission type 497) not already contained in an element containing amended text or other data from a previous submission.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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