Investor A Investor C And Institutional [Member] Expense Example - Investor A, C And Institutional - BlackRock New York Municipal Opportunities Fund |
Jun. 30, 2026
USD ($)
|
|---|---|
| Institutional Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 72 |
| Expense Example, with Redemption, 3 Years | 243 |
| Expense Example, with Redemption, 5 Years | 430 |
| Expense Example, with Redemption, 10 Years | 970 |
| Investor A Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 518 |
| Expense Example, with Redemption, 3 Years | 729 |
| Expense Example, with Redemption, 5 Years | 958 |
| Expense Example, with Redemption, 10 Years | 1,614 |
| Investor C Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 273 |
| Expense Example, with Redemption, 3 Years | 555 |
| Expense Example, with Redemption, 5 Years | 961 |
| Expense Example, with Redemption, 10 Years | $ 1,895 |