Alger International Opportunities Fund Expense Example, No Redemption - Class A B C Shares [Member] - Alger International Opportunities Fund |
Oct. 31, 2025
USD ($)
|
|---|---|
| Class B | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 199 |
| Expense Example, No Redemption, 3 Years | 615 |
| Expense Example, No Redemption, 5 Years | 1,057 |
| Expense Example, No Redemption, 10 Years | 2,285 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 211 |
| Expense Example, No Redemption, 3 Years | 652 |
| Expense Example, No Redemption, 5 Years | 1,119 |
| Expense Example, No Redemption, 10 Years | $ 2,410 |