Investor A C and Institutional [Member] Expense Example - Investor A, C and Institutional - BlackRock New Jersey Municipal Bond Fund |
May 31, 2025
USD ($)
|
|---|---|
| Investor A Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 501 |
| Expense Example, with Redemption, 3 Years | 692 |
| Expense Example, with Redemption, 5 Years | 900 |
| Expense Example, with Redemption, 10 Years | 1,496 |
| Investor C Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 256 |
| Expense Example, with Redemption, 3 Years | 517 |
| Expense Example, with Redemption, 5 Years | 903 |
| Expense Example, with Redemption, 10 Years | 1,780 |
| Institutional Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 54 |
| Expense Example, with Redemption, 3 Years | 211 |
| Expense Example, with Redemption, 5 Years | 382 |
| Expense Example, with Redemption, 10 Years | $ 877 |