Mid Cap Growth Stock 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 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Mid Cap Growth Stock Portfolio | Mid Cap Growth Stock Portfolio | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 8.32% | 8.21% | 14.96% | (23.77%) | 10.18% | 25.41% | 33.01% | (7.38%) | 20.29% | 0.83% |