International Equity Index Fund 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 |
|
| International Equity Index Fund | Institutional | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 31.42% | 4.66% | 18.08% | (15.69%) | 10.43% | 8.17% | 21.21% | (12.86%) | 24.69% | 1.63% |