SA American Century Inflation Protection Portfolio Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 99 Months Ended | 120 Months Ended |
|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
|
| Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 1.25% | (0.33%) | 0.88% | 1.35% |
| Bloomberg U.S. TIPS Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 1.84% | 1.87% | 2.24% | |
| Class 1 | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 1.71% | 0.99% | 1.56% | |
| Class 3 | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 1.58% | 0.74% | 1.31% |