Janus Henderson Flexible Bond Portfolio Investment Objectives and Goals - Institutional Shares [Member] - Janus Henderson Flexible Bond Portfolio |
Dec. 31, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | <span style="color:#000000;font-family:Times New Roman;font-size:15.20pt;font-weight:bold;">Janus Henderson Flexible Bond Portfolio</span> |
| Objective [Heading] | <span style="color:#FFFFFF;font-family:Times New Roman;font-size:10.45pt;font-weight:bold;margin-left:0.0pt;text-transform:uppercase;">Investment Objective</span> |
| Objective, Primary [Text Block] | Janus Henderson Flexible Bond Portfolio (“Flexible Bond Portfolio”) seeks to obtain maximum total return, consistent with preservation of capital. |