State Street Total Return 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 |
|
| Class 3 [Member] | State Street Total Return VIS Fund | Class 3 | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 15.48% | 11.06% | 15.21% | (16.72%) | 13.20% | 6.14% | 15.57% | (6.61%) | 15.26% | 6.08% |