Service Shares [Member] Average Annual Total Returns - Service Shares |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell 3000 Index (Reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% |
| Russell 3000 Health Care Index (Reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 14.56% | 6.31% | 9.54% |
| SERVICE | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 15.92% | 5.53% | 9.50% |
| SERVICE | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 12.96% | 3.57% | 7.92% |
| SERVICE | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 11.14% | 4.07% | 7.47% |