Alger Global Equity Fund Annual Fund Operating Expenses - Class A C Shares [Member] - Alger Global Equity Fund |
Oct. 31, 2025 |
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| Prospectus [Line Items] | ||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | <span style="color:#262626;font-family:Arial;font-size:8pt;">October 31, 2027</span> | |||||
| Class A | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.80% | [1] | ||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||
| Other Expenses (as a percentage of Assets): | 1.14% | |||||
| Expenses (as a percentage of Assets) | 2.19% | |||||
| Fee Waiver or Reimbursement | (0.99%) | [2] | ||||
| Net Expenses (as a percentage of Assets) | 1.20% | |||||
| Class C | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.80% | [1] | ||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||
| Other Expenses (as a percentage of Assets): | 1.21% | |||||
| Expenses (as a percentage of Assets) | 3.01% | |||||
| Fee Waiver or Reimbursement | (0.76%) | [2] | ||||
| Net Expenses (as a percentage of Assets) | 2.25% | |||||
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