Investor A C and Institutional [Member] Expense Example - Investor A, C and Institutional - BlackRock Pennsylvania Municipal Bond Fund |
May 31, 2025
USD ($)
|
|---|---|
| Institutional Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 60 |
| Expense Example, with Redemption, 3 Years | 234 |
| Expense Example, with Redemption, 5 Years | 424 |
| Expense Example, with Redemption, 10 Years | 970 |
| Investor A Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 507 |
| Expense Example, with Redemption, 3 Years | 704 |
| Expense Example, with Redemption, 5 Years | 918 |
| Expense Example, with Redemption, 10 Years | 1,532 |
| Investor C Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 262 |
| Expense Example, with Redemption, 3 Years | 538 |
| Expense Example, with Redemption, 5 Years | 938 |
| Expense Example, with Redemption, 10 Years | $ 1,845 |