S000000606 [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 Small Cap Value Opportunities Fund | Nuveen Small Cap Value Opportunities Fund - Class A | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Annual Return [Percent] | [1] | 7.09% | 19.82% | 16.34% | (5.48%) | 26.43% | 0.20% | 24.80% | (19.19%) | 11.76% | 21.34% | |
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