Janus Henderson Global Sustainable Equity Portfolio Average Annual Total Returns - Institutional Shares [Member] |
12 Months Ended | 47 Months Ended | 60 Months Ended | 120 Months Ended | |
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| MSCI World IndexSM (reflects no deduction for fees, expenses, or taxes, except foreign withholding taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 21.09% | 12.32% | 12.15% | 12.17% | |
| Institutional Shares | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 17.46% | 8.46% | |||
| Performance Inception Date | Jan. 26, 2022 |