v3.26.3
S000003466 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended 237 Months Ended 264 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
S&P 500® Index (reflects no deduction for fees, expenses or taxes)          
Prospectus [Line Items]          
Average Annual Return, Percent [1] 17.88% 14.42% 14.82%    
Class I          
Prospectus [Line Items]          
Average Annual Return, Percent 18.81% 12.71% 12.78%    
Performance Inception Date         Dec. 31, 2003
Class I | After Taxes on Distributions          
Prospectus [Line Items]          
Average Annual Return, Percent 16.15% 10.19% 9.96%    
Performance Inception Date         Dec. 31, 2003
Class I | After Taxes on Distributions and Sales          
Prospectus [Line Items]          
Average Annual Return, Percent 12.96% 9.71% 9.69%    
Performance Inception Date         Dec. 31, 2003
Class S          
Prospectus [Line Items]          
Average Annual Return, Percent 18.51% 12.42% 12.50%    
Performance Inception Date       Mar. 31, 2006  
[1]
A broad-based securities market index that represents the overall domestic equity markets.