v3.25.1
Expense Example, No Redemption - THE GABELLI UTILITIES FUND
Apr. 30, 2025
USD ($)
THE GABELLI UTILITIES FUND CLASS AAA  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 134
Expense Example, No Redemption, 3 Years 418
Expense Example, No Redemption, 5 Years 723
Expense Example, No Redemption, 10 Years 1,589
THE GABELLI UTILITIES FUND CLASS A  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 702
Expense Example, No Redemption, 3 Years 969
Expense Example, No Redemption, 5 Years 1,256
Expense Example, No Redemption, 10 Years 2,072
THE GABELLI UTILITIES FUND CLASS C  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 210
Expense Example, No Redemption, 3 Years 649
Expense Example, No Redemption, 5 Years 1,114
Expense Example, No Redemption, 10 Years 2,401
THE GABELLI UTILITIES FUND CLASS I  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 109
Expense Example, No Redemption, 3 Years 340
Expense Example, No Redemption, 5 Years 589
Expense Example, No Redemption, 10 Years $ 1,304