State Street Small Cap Equity VIS 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 |
|
| State Street Small Cap Equity VIS Fund | Class 1 | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | (0.25%) | 10.32% | 13.55% | (15.40%) | 20.53% | 14.53% | 26.12% | (9.70%) | 12.71% | 23.77% |