S000000289 [Member] Expense Example - Nuveen High Yield Municipal Bond Fund |
Mar. 31, 2026
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 605 |
| Expense Example, with Redemption, 3 Years | 992 |
| Expense Example, with Redemption, 5 Years | 1,403 |
| Expense Example, with Redemption, 10 Years | 2,549 |
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 173 |
| Expense Example, with Redemption, 3 Years | 536 |
| Expense Example, with Redemption, 5 Years | 923 |
| Expense Example, with Redemption, 10 Years | 2,009 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 273 |
| Expense Example, with Redemption, 3 Years | 838 |
| Expense Example, with Redemption, 5 Years | 1,430 |
| Expense Example, with Redemption, 10 Years | 3,032 |
| Class R6 | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 169 |
| Expense Example, with Redemption, 3 Years | 523 |
| Expense Example, with Redemption, 5 Years | 902 |
| Expense Example, with Redemption, 10 Years | $ 1,965 |