v3.26.3
Janus Henderson Mid Cap Value Fund Annual Fund Operating Expenses - Class A C S I N R T Shares [Member] - Janus Henderson Mid Cap Value Fund
Jun. 30, 2026
Class A  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.52% [1]
Distribution and Service (12b-1) Fees 0.25%
Other Expenses (as a percentage of Assets): 0.15%
Expenses (as a percentage of Assets) 0.92%
Class C  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.52% [1]
Distribution and Service (12b-1) Fees 1.00%
Other Expenses (as a percentage of Assets): 0.17%
Expenses (as a percentage of Assets) 1.69%
Class S  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.52% [1]
Distribution and Service (12b-1) Fees 0.25%
Other Expenses (as a percentage of Assets): 0.28%
Expenses (as a percentage of Assets) 1.05%
Class I  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.52% [1]
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.14%
Expenses (as a percentage of Assets) 0.66%
Class N  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.52% [1]
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.03%
Expenses (as a percentage of Assets) 0.55%
Class R  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.52% [1]
Distribution and Service (12b-1) Fees 0.50%
Other Expenses (as a percentage of Assets): 0.29%
Expenses (as a percentage of Assets) 1.31%
Class T  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.52% [1]
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.28%
Expenses (as a percentage of Assets) 0.80%
[1] This fee may adjust up or down monthly based on the Fund’s performance relative to its benchmark index over the performance measurement period. For more information regarding performance-based advisory fees, refer to “Management Expenses” in the Fund’s Prospectus.