v3.26.1
SA International Index Portfolio Average Annual Total Returns
12 Months Ended 60 Months Ended 92 Months Ended 107 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
MSCI EAFE Index (net)[Member]            
Prospectus [Line Items]            
Average Annual Return, Percent   31.22% 8.92% 7.38% 8.70% 8.18%
Class 1            
Prospectus [Line Items]            
Average Annual Return, Percent   31.00% 8.46%   8.02%  
Performance Inception Date Feb. 06, 2017          
Class 3            
Prospectus [Line Items]            
Average Annual Return, Percent   30.60% 8.18%   7.74%  
Performance Inception Date Feb. 06, 2017