Investor A Institutional and Class R [Member] Annual Fund Operating Expenses - Investor A, Institutional and Class R - BlackRock Sustainable Emerging Markets Equity Fund |
Apr. 30, 2025 |
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|---|---|---|---|---|---|---|---|---|
| Prospectus [Line Items] | ||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | June 30, 2027 | |||||||
| Investor A Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.60% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||
| Other Expenses (as a percentage of Assets): | 0.51% | |||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||
| Expenses (as a percentage of Assets) | 1.37% | [2] | ||||||
| Fee Waiver or Reimbursement | (0.25%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 1.12% | [1],[3] | ||||||
| Institutional Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.60% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Other Expenses (as a percentage of Assets): | 0.51% | |||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||
| Expenses (as a percentage of Assets) | 1.12% | [2] | ||||||
| Fee Waiver or Reimbursement | (0.25%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 0.87% | [1],[3] | ||||||
| Class R Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.60% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.50% | |||||||
| Other Expenses (as a percentage of Assets): | 0.67% | |||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||
| Expenses (as a percentage of Assets) | 1.78% | [2] | ||||||
| Fee Waiver or Reimbursement | (0.41%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 1.37% | [1],[3] | ||||||
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