S000000562 [Member] Annual Total Returns |
12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Nuveen North Carolina Municipal Bond Fund | Nuveen North Carolina Municipal Bond Fund - Class A | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Annual Return [Percent] | [1] | 3.48% | 1.04% | 5.28% | (11.04%) | 1.06% | 4.81% | 7.20% | (0.18%) | 4.92% | (0.01%) | |
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