Alger Capital Appreciation Institutional 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 |
|
| Class Y Shares [Member] | Alger Capital Appreciation Institutional Fund | Class Y | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 32.50% | 50.13% | 43.46% | (36.51%) | 18.33% | 41.85% | 33.67% | (0.44%) |