v3.26.1
Alger Small Cap Growth Portfolio Annual Fund Operating Expenses - Class I2 [Member] - Alger Small Cap Growth Portfolio - Class I-2
Dec. 31, 2025
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.81% [1]
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.16%
Expenses (as a percentage of Assets) 0.97%
[1] The Portfolio and Fred Alger Management, LLC (the “Manager”) have adopted fee breakpoints for the Portfolio. The advisory fee for assets up to $1 billion is .81%, and for assets in excess of $1 billion is .75%. The actual rate paid as a percentage of average daily net assets for the year ended December 31, 2025 was .81%.