v3.26.3
Janus Henderson Small Cap Value Fund Investment Objectives and Goals - Class D Shares [Member] - Janus Henderson Small Cap Value 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 Small Cap Value 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 Objective</span>
Objective, Primary [Text Block] Janus Henderson Small Cap Value Fund seeks capital appreciation.