v3.26.1
Investor A C and Institutional Member] Expense Example - Investor A, C and Institutional - BLACKROCK EMERGING MARKETS FUND, INC.
Apr. 30, 2026
USD ($)
Investor A Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 633
Expense Example, with Redemption, 3 Years 919
Expense Example, with Redemption, 5 Years 1,225
Expense Example, with Redemption, 10 Years 2,094
Investor C Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 290
Expense Example, with Redemption, 3 Years 638
Expense Example, with Redemption, 5 Years 1,112
Expense Example, with Redemption, 10 Years 2,241
Institutional Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 89
Expense Example, with Redemption, 3 Years 314
Expense Example, with Redemption, 5 Years 557
Expense Example, with Redemption, 10 Years $ 1,256