Investor A C Institutional and Class R [Member] Annual Fund Operating Expenses - Investor A, C, Institutional and Class R - BlackRock International Fund |
May 31, 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) | 0.59% | [1] | ||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||
| Component1 Other Expenses | 0.19% | |||||
| Component2 Other Expenses | 0.01% | |||||
| Other Expenses (as a percentage of Assets): | 0.20% | |||||
| Expenses (as a percentage of Assets) | 1.04% | |||||
| Fee Waiver or Reimbursement | (0.12%) | [1],[2] | ||||
| Net Expenses (as a percentage of Assets) | 0.92% | [1],[2] | ||||
| Investor C Shares | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.59% | [1] | ||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||
| Component1 Other Expenses | 0.24% | |||||
| Component2 Other Expenses | 0.01% | |||||
| Other Expenses (as a percentage of Assets): | 0.25% | |||||
| Expenses (as a percentage of Assets) | 1.84% | |||||
| Fee Waiver or Reimbursement | (0.17%) | [1],[2] | ||||
| Net Expenses (as a percentage of Assets) | 1.67% | [1],[2] | ||||
| Institutional Shares | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.59% | [1] | ||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||
| Component1 Other Expenses | 0.17% | |||||
| Component2 Other Expenses | 0.01% | |||||
| Other Expenses (as a percentage of Assets): | 0.18% | |||||
| Expenses (as a percentage of Assets) | 0.77% | |||||
| Fee Waiver or Reimbursement | (0.10%) | [1],[2] | ||||
| Net Expenses (as a percentage of Assets) | 0.67% | [1],[2] | ||||
| Class R Shares | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.59% | [1] | ||||
| Distribution and Service (12b-1) Fees | 0.50% | |||||
| Component1 Other Expenses | 0.26% | |||||
| Component2 Other Expenses | 0.01% | |||||
| Other Expenses (as a percentage of Assets): | 0.27% | |||||
| Expenses (as a percentage of Assets) | 1.36% | |||||
| Fee Waiver or Reimbursement | (0.19%) | [1],[2] | ||||
| Net Expenses (as a percentage of Assets) | 1.17% | [1],[2] | ||||
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