Investor A Institutional [Member] Annual Fund Operating Expenses - Investor A, Institutional - BlackRock Sustainable Aware Advantage International Equity Fund |
Apr. 30, 2026 |
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| Prospectus [Line Items] | ||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | June 30, 2028 | |||||||
| Institutional | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.45% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Other Expenses (as a percentage of Assets): | 2.71% | [2] | ||||||
| Expenses (as a percentage of Assets) | 3.16% | [2] | ||||||
| Fee Waiver or Reimbursement | (2.66%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 0.50% | [1],[3] | ||||||
| Investor A | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.45% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||
| Other Expenses (as a percentage of Assets): | 2.72% | [2] | ||||||
| Expenses (as a percentage of Assets) | 3.42% | [2] | ||||||
| Fee Waiver or Reimbursement | (2.67%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 0.75% | [1],[3] | ||||||
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