Alger AI Enablers & Adopters Expense Example - Class I Shares [Member] - Alger AI Enablers & Adopters - Class I	Oct. 31, 2025 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 86
Expense Example, with Redemption, 3 Years	531
Expense Example, with Redemption, 5 Years	1,134
Expense Example, with Redemption, 10 Years	$ 2,769

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