Investor A, Institutional [Member] Annual Total Returns |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Investor A, Institutional [Member] | BlackRock Defensive Advantage Emerging Markets Fund | Investor A Shares | ||||
| Prospectus [Line Items] | ||||
| Annual Return [Percent] | 10.16% | 11.67% | (11.34%) | 4.45% |