Annual Total Returns - Class R6 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Nuveen Equity Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 17.07% | 23.71% | 25.91% | (19.17%) | 25.63% | 20.82% | 30.87% | (5.22%) | 21.09% | 12.76% |
| Nuveen Large Cap Growth Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 18.50% | 33.28% | 42.63% | (29.17%) | 27.52% | 38.43% | 36.27% | (1.55%) | 30.07% | 7.05% |
| Nuveen Large Cap Value Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 15.84% | 14.27% | 11.47% | (7.54%) | 25.02% | 2.90% | 26.39% | (8.31%) | 13.62% | 17.23% |
| Nuveen S&P 500 Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 17.82% | 24.94% | 26.22% | (18.12%) | 28.64% | 18.34% | 31.42% | (4.45%) | 21.77% | 11.87% |
| Nuveen Small Cap Blend Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 12.79% | 11.57% | 17.04% | (20.29%) | 14.89% | 20.15% | 25.53% | (10.84%) | 14.83% | 21.58% |
| Nuveen Emerging Markets Equity Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 34.13% | 6.71% | 9.23% | (20.22%) | (3.06%) | 17.68% | 18.57% | (14.57%) | 37.45% | 11.06% |
| Nuveen International Equity Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 31.58% | 3.70% | 18.20% | (14.20%) | 11.30% | 8.14% | 21.79% | (13.25%) | 25.32% | 1.22% |
| Nuveen Emerging Markets Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 36.05% | (0.29%) | 13.97% | (20.02%) | (16.62%) | 18.23% | 28.62% | (18.11%) | 45.45% | 5.96% |
| Nuveen International Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 33.33% | 4.00% | 16.89% | (17.33%) | 10.81% | 15.82% | 23.19% | (23.43%) | 32.94% | 0.41% |
| Nuveen International Opportunities Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 20.39% | 0.72% | 15.42% | (24.47%) | 3.33% | 32.66% | 30.32% | (17.30%) | 35.20% | (0.69%) |
| Nuveen Quant International Small Cap Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 35.66% | 5.06% | 16.93% | (18.34%) | 11.64% | 5.86% | 20.78% | (23.21%) | 34.94% | |
| Nuveen International Responsible Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 28.59% | 3.18% | 19.25% | (14.78%) | 11.94% | 9.87% | 23.31% | (13.58%) | 24.52% | 1.12% |
| Nuveen Core Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 14.11% | 28.98% | 32.79% | (22.11%) | 25.38% | 20.53% | 30.23% | (7.11%) | 23.96% | 8.60% |
| Nuveen Large Cap Growth Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 15.59% | 29.17% | 47.04% | (32.76%) | 16.77% | 44.24% | 30.71% | 0.04% | 34.51% | (0.85%) |
| Nuveen Large Cap Value Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 17.49% | 14.80% | 14.31% | (6.99%) | 27.01% | 3.59% | 28.81% | (14.10%) | 12.52% | 18.60% |
| Nuveen Quant Mid Cap Growth Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.48% | 8.50% | 21.45% | (33.08%) | 2.95% | 45.33% | 33.39% | (8.17%) | 26.21% | 1.95% |
| Nuveen Mid Cap Value Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 10.22% | 14.49% | 11.39% | (10.34%) | 32.18% | (4.19%) | 27.05% | (14.15%) | 11.13% | 17.40% |
| Nuveen Quant Small Cap Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 16.48% | 16.26% | 18.70% | (15.44%) | 25.06% | 12.82% | 23.86% | (11.97%) | 15.01% | 19.97% |
| Nuveen Quant Small/Mid Cap Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 16.20% | 18.33% | 20.95% | (16.41%) | 32.04% | 15.99% | 29.95% | (7.57%) | 19.63% | |
| Nuveen Large Cap Responsible Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 16.61% | 18.24% | 22.49% | (17.77%) | 26.46% | 20.34% | 31.49% | (5.53%) | 20.93% | 13.51% |