v3.25.2
Class K [Member] Average Annual Total Returns
 12 Months Ended 48 Months Ended
Dec. 31, 2024
Dec. 31, 2024
MSCI Emerging Markets Index (Net) (Reflects deduction for fees, expenses or taxes, except for withholding taxes on reinvested dividends)    
Prospectus [Line Items]    
Average Annual Return, Percent [1] 7.50% (1.38%)
MSCI Emerging Markets Minimum Volatility Index (Net) (Reflects deduction for fees, expenses or taxes, except for withholding taxes on reinvested dividends)    
Prospectus [Line Items]    
Average Annual Return, Percent [1] 9.03% 2.54%
Class K | Class K Shares    
Prospectus [Line Items]    
Average Annual Return, Percent 10.50% 4.26%
Performance Inception Date   Dec. 21, 2020
Class K | Class K Shares | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 10.13% 3.28%
Performance Inception Date   Dec. 21, 2020
Class K | Class K Shares | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 6.99% 3.16%
Performance Inception Date   Dec. 21, 2020
[1] Returns for net indices generally assume the reinvestment of dividends after the deduction of the maximum withholding tax in each country applicable to non-residents of the country as determined by the index provider. Such indices use withholding tax rates that are often at a higher rate than the rates to which the Fund is subject in each country, including for countries where the Fund is not subject to withholding taxes. When this is the case, index performance will be lower than if the index used the Fund’s applicable withholding tax rates, if any.