Service Shares [Member] Average Annual Total Returns - Service Shares [Member] |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
|
| Russell 3000® Index (Reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 23.81% | 13.86% | 12.55% |
| Russell 3000® Health Care Index (Reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.48% | 7.18% | 8.81% |
| SERVICE | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.78% | 6.16% | 9.02% |
| SERVICE | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 1.77% | 4.51% | 7.36% |
| SERVICE | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.79% | 4.74% | 7.00% |