Alger AI Enablers & Adopters Average Annual Total Returns - Class A C Shares [Member] |
12 Months Ended | 21 Months Ended | 53 Months Ended | 60 Months Ended | 120 Months Ended | |
|---|---|---|---|---|---|---|
Oct. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| S&P 500 Index (reflects no deductions for fees, expenses or taxes)[Member] | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 17.88% | 19.32% | 12.04% | 14.42% | 14.82% | |
| Class A | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 33.48% | 38.87% | ||||
| Performance Inception Date | Apr. 04, 2024 | |||||
| Class A | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 30.33% | 36.33% | ||||
| Class A | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 19.96% | 29.29% | ||||
| Class C | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 38.78% | 42.14% | ||||
| Performance Inception Date | Apr. 04, 2024 |