Class K [Member] Annual Fund Operating Expenses - Class K - BlackRock Defensive 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 | |||||
| Class K Shares | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.80% | [1] | ||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||
| Other Expenses (as a percentage of Assets): | 3.26% | |||||
| Expenses (as a percentage of Assets) | 4.06% | |||||
| Fee Waiver or Reimbursement | (3.25%) | [1],[2] | ||||
| Net Expenses (as a percentage of Assets) | 0.81% | [1],[2] | ||||
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