Class K [Member] Expense Example - Class K - BLACKROCK EMERGING MARKETS FUND, INC. - Class K Shares	Apr. 30, 2026 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 84
Expense Example, with Redemption, 3 Years	281
Expense Example, with Redemption, 5 Years	495
Expense Example, with Redemption, 10 Years	$ 1,111

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