Average Annual Total Returns - FidelityEmergingMarketsFund-KPRO - FidelityEmergingMarketsFund-KPRO - Fidelity Emerging Markets Fund	Dec. 30, 2024
Fidelity Emerging Markets Fund - Class K \| Return Before Taxes
Average Annual Return:
Past 1 year	15.35%
Past 5 years	8.58%
Past 10 years	5.68%
MC041
Average Annual Return:
Past 1 year	9.86%
Past 5 years	3.71%
Past 10 years	2.70%

Return Before Taxes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 4
-Subsection b
-Paragraph 2
-Subparagraph iii
-Clause 1
-Exhibit 2

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Namespace Prefix:	rr_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration