Total International Stock Market Index Portfolio 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 |
|
| Portfolio [Member] | Total International Stock Market Index Portfolio | Total International Stock Market Index Portfolio | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 32.04% | 5.06% | 15.54% | (16.01%) | 8.53% | 11.18% | 21.55% | (14.62%) |