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SA JPMorgan Diversified Balanced Portfolio Average Annual Total Returns
12 Months Ended 60 Months Ended 63 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
MSCI World Index (net)[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent 13.14% 21.09% 12.15% 13.43% 12.17%
SA JPM Div Bal Blended Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   15.33% 7.04%   8.29%
Class 1          
Prospectus [Line Items]          
Average Annual Return, Percent   12.95% 6.06%   7.54%
Class 2          
Prospectus [Line Items]          
Average Annual Return, Percent   12.82% 5.90%   7.38%
Class 3          
Prospectus [Line Items]          
Average Annual Return, Percent   12.65% 5.80%   7.27%