Shareholder Report, Average Annual Return (Details)	12 Months Ended	60 Months Ended	64 Months Ended	120 Months Ended
Shareholder Report, Average Annual Return (Details)	Apr. 30, 2026	Apr. 30, 2026	Apr. 30, 2026	Apr. 30, 2026
C000198231 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Class K Shares
Average Annual Return, Percent	49.42%	4.78%		6.20%
C000103257 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor C Shares (with sales charge)
Average Annual Return, Percent	46.64%	3.67%		5.22%
C000103256 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor A Shares (with sales charge)
Average Annual Return, Percent	40.88%	3.32%		5.28%
C000103258 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Institutional Shares
Average Annual Return, Percent	49.07%	4.74%		6.16%
C000121567 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Institutional Shares
Average Annual Return, Percent	18.68%	12.08%		7.71%
C000121568 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor A Shares (with sales charge)
Average Annual Return, Percent	12.21%	10.60%		6.85%
C000121569 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor C Shares (with sales charge)
Average Annual Return, Percent	16.54%	10.98%		6.79%
C000166017 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Class K Shares
Average Annual Return, Percent	18.84%	12.15%		7.76%
C000223507 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Class K Shares
Average Annual Return, Percent	20.47%	6.64%	7.74%
C000223508 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor A Shares (with sales charge)
Average Annual Return, Percent	13.86%	5.17%	6.36%
C000223506 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Institutional Shares
Average Annual Return, Percent	20.41%	6.61%	7.72%
Without Sales Load [Member] \| C000103257 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor C Shares
Average Annual Return, Percent	47.64%	3.67%		5.22%
Without Sales Load [Member] \| C000103256 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor A Shares
Average Annual Return, Percent	48.69%	4.44%		5.85%
Without Sales Load [Member] \| C000121568 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor A Shares
Average Annual Return, Percent	18.43%	11.80%		7.43%
Without Sales Load [Member] \| C000121569 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor C Shares
Average Annual Return, Percent	17.54%	10.98%		6.79%
Without Sales Load [Member] \| C000223508 [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Investor A Shares
Average Annual Return, Percent	20.17%	6.31%	7.44%
MSCI Emerging Markets Index Net [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	MSCI Emerging Markets Index (Net)
Average Annual Return, Percent	46.68%	6.05%	7.13%	9.23%
MSCI World Index Net [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	MSCI World Index (Net)
Average Annual Return, Percent	29.16%	11.29%		12.65%
ICE BofA 3 Month U S Treasury Bill Index [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	ICE BofA 3-Month U.S. Treasury Bill Index
Average Annual Return, Percent	3.95%	3.40%		2.29%
MSCI Emerging Markets Minimum Volatility Index Net [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	MSCI Emerging Markets Minimum Volatility Index (Net)
Average Annual Return, Percent	20.45%	5.01%	5.93%