Janus Henderson Global Technology and Innovation Portfolio Average Annual Total Returns - Service Shares [Member] |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| 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% |
| MSCI All Country World Information Technology Index (reflects no deduction for fees, expenses, or taxes, except foreign withholding taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 26.37% | 17.13% | 21.59% |
| Service Shares | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 24.84% | 13.44% | 21.18% |