Investor A C And Institutional [Member] Expense Example - Investor A, C and Institutional - BlackRock Systematic Multi-Strategy Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| Investor A Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 517 |
| Expense Example, with Redemption, 3 Years | 768 |
| Expense Example, with Redemption, 5 Years | 1,037 |
| Expense Example, with Redemption, 10 Years | 1,806 |
| Investor C Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 293 |
| Expense Example, with Redemption, 3 Years | 597 |
| Expense Example, with Redemption, 5 Years | 1,026 |
| Expense Example, with Redemption, 10 Years | 2,043 |
| Institutional Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 94 |
| Expense Example, with Redemption, 3 Years | 295 |
| Expense Example, with Redemption, 5 Years | 514 |
| Expense Example, with Redemption, 10 Years | $ 1,142 |