S000000546 [Member] Expense Example - Nuveen Colorado Municipal Bond Fund |
May 31, 2026
USD ($)
|
|---|---|
| Nuveen Colorado Municipal Bond Fund - Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 496 |
| Expense Example, with Redemption, 3 Years | 659 |
| Expense Example, with Redemption, 5 Years | 835 |
| Expense Example, with Redemption, 10 Years | 1,345 |
| Nuveen Colorado Municipal Bond Fund - Class I | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 59 |
| Expense Example, with Redemption, 3 Years | 186 |
| Expense Example, with Redemption, 5 Years | 324 |
| Expense Example, with Redemption, 10 Years | 726 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 161 |
| Expense Example, with Redemption, 3 Years | 499 |
| Expense Example, with Redemption, 5 Years | 860 |
| Expense Example, with Redemption, 10 Years | $ 1,878 |