SA JPMorgan MFS Core Bond 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 |
|
| 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% |
| Class 1 | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 7.29% | 0.10% | 2.45% | ||
| Class 2 | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 7.03% | (0.07%) | 2.30% | ||
| Class 3 | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 6.98% | (0.17%) | 2.19% |