Mid Cap Value Portfolio Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell MidCap® Value Index(reflects no deduction for fees, expenses or taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 11.05% | 9.83% | 9.78% |
| S&P 500® Index(reflects no deduction for fees, expenses or taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 17.88% | 14.42% | 14.82% |
| Mid Cap Value Portfolio | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 9.16% | 8.96% | 9.25% |