Janus Henderson Global Research 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 |
|
| 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% |
| MSCI All Country World IndexSM (reflects no deduction for fees, expenses, or taxes, except foreign withholding taxes)[Member] | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 22.34% | 11.19% | 11.72% | |
| Institutional Shares | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 20.92% | 12.51% | 12.93% |