Alger AI Enablers & Adopters Investment Objectives and Goals - Class Y Shares [Member] - Alger AI Enablers & Adopters	Oct. 31, 2025
Prospectus [Line Items]
Risk/Return [Heading]	<span style="color:#262626;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Alger AI Enablers & Adopters Fund</span>
Objective [Heading]	<span style="color:#0064FA;font-family:Arial;font-size:10pt;font-weight:bold;">Investment Objective</span>
Objective, Primary [Text Block]	Alger AI Enablers & Adopters Fund seeks long-term capital appreciation.