S000000002 [Member] Investment Objectives and Goals - SA Franklin Mid Cap Core Portfolio |
Dec. 31, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | PORTFOLIO SUMMARY: SA FRANKLIN MID CAP CORE PORTFOLIO |
| Objective [Heading] | Investment Goal |
| Objective, Primary [Text Block] | The Portfolio’s investment goal is to provide long-term capital growth.
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