v3.26.3
Janus Henderson Government Money Market Fund Investment Objectives and Goals - Class I N T Shares [Member] - Janus Henderson Government Money Market Fund
Jun. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] <span style="color:#000000;font-family:Times New Roman;font-size:15.20pt;font-weight:bold;">Janus Henderson Government Money Market Fund</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 Objectives</span>
Objective, Primary [Text Block] Janus Henderson Government Money Market Fund seeks capital preservation and liquidity with current income as a secondary objective.