SA Fixed Income Index Portfolio Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 99 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 |
|
| Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 7.30% | (0.36%) | 1.74% | 1.96% | 2.01% | |
| Bloomberg U.S. Government/Credit Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 6.88% | (0.59%) | 2.07% | |||
| Class 1 | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 6.36% | (0.58%) | 1.84% | |||
| Performance Inception Date | Feb. 06, 2017 | |||||
| Class 3 | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 6.05% | (0.84%) | 1.58% | |||
| Performance Inception Date | Feb. 06, 2017 |