Annual Total Returns - Gateway Trust - Classes A, C, N, and Y - Y |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Gateway Equity Call Premium Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 13.20% | 17.68% | 17.59% | (11.48%) | 19.43% | 8.38% | 16.67% | (5.37%) | 12.21% | 7.83% |
| Gateway Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 10.84% | 15.37% | 14.70% | (11.85%) | 11.49% | 7.19% | 11.12% | (4.18%) | 9.93% | 5.48% |