S000000002 [Member] Annual Total Returns |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| SA Franklin Mid Cap Core Portfolio | Survivor fund | ||||
| Prospectus [Line Items] | ||||
| Annual Return [Percent] | 10.34% | 12.43% | 16.30% | (14.19%) |