Investor A C And Institutional [Member] Annual Fund Operating Expenses - Investor A, C and Institutional - BlackRock Advantage Emerging Markets Fund |
Apr. 30, 2026 |
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| Prospectus [Line Items] | ||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | June 30, 2028 | |||||||
| Investor A Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.80% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||
| Component1 Other Expenses | 1.34% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Other Expenses (as a percentage of Assets): | 1.35% | [2] | ||||||
| Acquired Fund Fees and Expenses | 0.01% | [3] | ||||||
| Expenses (as a percentage of Assets) | 2.41% | [3] | ||||||
| Fee Waiver or Reimbursement | (1.24%) | [1],[2] | ||||||
| Net Expenses (as a percentage of Assets) | 1.17% | [1],[2] | ||||||
| Investor C Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.80% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||||
| Component1 Other Expenses | 1.31% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Other Expenses (as a percentage of Assets): | 1.32% | [2] | ||||||
| Acquired Fund Fees and Expenses | 0.01% | [3] | ||||||
| Expenses (as a percentage of Assets) | 3.13% | [3] | ||||||
| Fee Waiver or Reimbursement | (1.21%) | [1],[2] | ||||||
| Net Expenses (as a percentage of Assets) | 1.92% | [1],[2] | ||||||
| Institutional Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.80% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Component1 Other Expenses | 1.22% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Other Expenses (as a percentage of Assets): | 1.23% | [2] | ||||||
| Acquired Fund Fees and Expenses | 0.01% | [3] | ||||||
| Expenses (as a percentage of Assets) | 2.04% | [3] | ||||||
| Fee Waiver or Reimbursement | (1.17%) | [1],[2] | ||||||
| Net Expenses (as a percentage of Assets) | 0.87% | [1],[2] | ||||||
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