Alger Capital Appreciation 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 |
|
| Class I2 [Member] | Alger Capital Appreciation Portfolio | Class I-2 | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 32.87% | 48.13% | 43.13% | (36.52%) | 19.13% | 41.75% | 33.58% | (0.10%) | 31.08% | 0.50% |