Investor A C and Institutional [Member] Expense Example - Investor A, C and Institutional - BlackRock New Jersey Municipal Bond Fund |
May 31, 2026
USD ($)
|
|---|---|
| Institutional Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 59 |
| Expense Example, with Redemption, 3 Years | 227 |
| Expense Example, with Redemption, 5 Years | 409 |
| Expense Example, with Redemption, 10 Years | 936 |
| Investor A Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 506 |
| Expense Example, with Redemption, 3 Years | 710 |
| Expense Example, with Redemption, 5 Years | 930 |
| Expense Example, with Redemption, 10 Years | 1,562 |
| Investor C Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 261 |
| Expense Example, with Redemption, 3 Years | 535 |
| Expense Example, with Redemption, 5 Years | 933 |
| Expense Example, with Redemption, 10 Years | $ 1,845 |