SA AB Small and Mid Cap Value Portfolio Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 107 Months Ended | 120 Months Ended |
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell 3000® Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.28% | 14.29% |
| Russell 2500® Value Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 12.73% | 10.02% | 9.72% | |
| Class 1 | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 2.54% | 8.63% | 8.55% | |
| Class 2 | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 2.36% | 8.47% | 8.38% | |
| Class 3 | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 2.32% | 8.36% | 8.27% |