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SA JPMorgan Large Cap Core Portfolio Average Annual Total Returns
12 Months Ended 60 Months Ended 92 Months Ended 99 Months Ended 107 Months Ended 111 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
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)[Member]                
Prospectus [Line Items]                
Average Annual Return, Percent 15.72% 17.88% 14.42% 15.06% 14.60% 14.97% 15.17% 14.82%
Class 1                
Prospectus [Line Items]                
Average Annual Return, Percent   14.47% 13.00%         12.73%
Class 2                
Prospectus [Line Items]                
Average Annual Return, Percent   14.29% 12.83%         12.56%
Class 3                
Prospectus [Line Items]                
Average Annual Return, Percent   14.15% 12.71%         12.44%