Small Company Growth 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] | Small Company Growth Portfolio | Small Company Growth Portfolio | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 6.11% | 11.38% | 19.65% | (25.35%) | 14.22% | 23.18% | 28.05% | (7.22%) |