Alger Focus Equity Fund Annual Fund Operating Expenses - Class A C Shares [Member] - Alger Focus Equity Fund |
Oct. 31, 2025 |
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.52% |
| Distribution and Service (12b-1) Fees | 0.25% |
| Other Expenses (as a percentage of Assets): | 0.22% |
| Expenses (as a percentage of Assets) | 0.99% |
| Class C | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.52% |
| Distribution and Service (12b-1) Fees | 1.00% |
| Other Expenses (as a percentage of Assets): | 0.22% |
| Expenses (as a percentage of Assets) | 1.74% |