S000019850 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 188 Months Ended | 263 Months Ended |
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell Midcap® Value Index (reflects no deductions for fees, expenses or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 11.05% | 9.83% | 9.78% | ||
| Russell 3000® Index (reflects no deductions for fees, expenses or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% | ||
| Class 1 | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 2.29% | 9.65% | 10.70% | ||
| Performance Inception Date | May 03, 2010 | ||||
| Class 2 | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 2.00% | 9.37% | 10.43% | ||
| Performance Inception Date | May 03, 2010 | ||||
| Class 3 | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 2.12% | 9.51% | 10.57% | ||
| Performance Inception Date | Feb. 04, 2004 |