v3.26.1
Shareholder Report, Average Annual Return (Details)
 6 Months Ended 12 Months Ended 60 Months Ended 120 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2026
C000048071        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Gabelli SRI Fund, Inc. - Class AAA      
C000048073        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Gabelli SRI Fund, Inc. - Class C      
Average Annual Return, Percent 6.60% 15.83% 6.21% 7.81%
C000048074        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Gabelli SRI Fund, Inc. - Class I      
C000048072        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Gabelli SRI Fund, Inc. - Class A      
Average Annual Return, Percent 1.40% 10.13% 4.95% 7.44%
Without Sales Load [Member] | C000048071        
Average Annual Return [Line Items]        
Average Annual Return, Percent 7.65% 16.83% 6.20% 8.08%
Without Sales Load [Member] | C000048073        
Average Annual Return [Line Items]        
Average Annual Return, Percent 7.60% 16.83% 6.21% 7.81%
Without Sales Load [Member] | C000048074        
Average Annual Return [Line Items]        
Average Annual Return, Percent 7.59% 16.81% 6.20% 8.18%
Without Sales Load [Member] | C000048072        
Average Annual Return [Line Items]        
Average Annual Return, Percent 7.58% 16.85% 6.21% 8.08%
S&P 500 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 10.21% 22.32% 13.41% 15.51%
S&P 500 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 10.21% 22.32% 13.41% 15.51%
S&P 500 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 10.21% 22.32% 13.41% 15.51%
S&P 500 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 10.21% 22.32% 13.41% 15.51%
MSCI ACWI SRI Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 16.02% 25.36% 11.06% 13.98%
MSCI ACWI SRI Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 16.02% 25.36% 11.06% 13.98%
MSCI ACWI SRI Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 16.02% 25.36% 11.06% 13.98%
MSCI ACWI SRI Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 16.02% 25.36% 11.06% 13.98%