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Alger Capital Appreciation Institutional Fund Annual Fund Operating Expenses - Class I R Shares [Member] - Alger Capital Appreciation Institutional Fund
Oct. 31, 2025
Class I  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.78% [1]
Distribution and Service (12b-1) Fees 0.00%
Component1 Other Expenses 0.22%
Component2 Other Expenses 0.25%
Other Expenses (as a percentage of Assets): 0.47%
Expenses (as a percentage of Assets) 1.25%
Class R  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.78% [1]
Distribution and Service (12b-1) Fees 0.50%
Component1 Other Expenses 0.17%
Component2 Other Expenses 0.25%
Other Expenses (as a percentage of Assets): 0.42%
Expenses (as a percentage of Assets) 1.70%
[1] The Fund and Fred Alger Management, LLC (the “Manager”) have adopted fee breakpoints for the Fund. The advisory fee for assets up to $2 billion is .81%, for assets between $2 billion and $3 billion is .65%, for assets between $3 billion and $4 billion is .60%, for assets between $4 billion and $5 billion is .55%, and for assets in excess of $5 billion is .45%. The actual rate paid as a percentage of average daily net assets for the year ended October 31, 2025 was .78%.