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 |
Dec. 31, 2017 |
|
| Class Z2 Shares [Member] | Alger Capital Appreciation Institutional Fund | Class Z-2 | |||||||||
| Prospectus [Line Items] | |||||||||
| Annual Return [Percent] | 32.44% | 50.09% | 43.47% | (36.60%) | 18.28% | 41.79% | 33.54% | (0.56%) | 31.45% |