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SA Franklin Systematic U.S. Large Cap Core Portfolio Average Annual Total Returns
12 Months Ended 60 Months Ended 75 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Russell 1000® Index (reflects no deduction for fees, expenses or taxes)[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent   17.37% 13.59% 15.93%
Class 1        
Prospectus [Line Items]        
Average Annual Return, Percent   18.33% 15.40% 15.42%
Performance Inception Date Oct. 07, 2019      
Class 3        
Prospectus [Line Items]        
Average Annual Return, Percent   18.02% 15.11% 15.13%
Performance Inception Date Oct. 07, 2019