v3.26.3
Janus Henderson Adaptive Risk Managed U.S. Equity Fund Annual Fund Operating Expenses - Class A C S I N T Shares [Member] - Janus Henderson Adaptive Risk Managed U.S. Equity Fund
Jun. 30, 2026
Prospectus [Line Items]  
Fee Waiver or Reimbursement over Assets, Date of Termination <span style="font-family:Times New Roman;font-size:7.60pt;">The Adviser has contractually agreed to waive its investment advisory fee and/or reimburse operating expenses to the extent that the Fund’s total annual fund operating expenses (excluding the fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses) exceed 0.59% for at least a one-year period commencing on October 28, 2026. This fee waiver and/or reimbursement may be revised,</span><span style="font-family:Times New Roman;font-size:7.60pt;line-height:9.50pt;"> </span><span style="font-family:Times New Roman;font-size:7.60pt;">extended, or terminated only at the discretion of the Board of Trustees.</span>
Class A  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.25%
Other Expenses (as a percentage of Assets): 0.13%
Expenses (as a percentage of Assets) 0.88%
Fee Waiver or Reimbursement 0.00% [1]
Net Expenses (as a percentage of Assets) 0.88% [1]
Class C  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 1.00%
Other Expenses (as a percentage of Assets): 0.22%
Expenses (as a percentage of Assets) 1.72%
Fee Waiver or Reimbursement (0.04%) [1]
Net Expenses (as a percentage of Assets) 1.68% [1]
Class S  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.25%
Other Expenses (as a percentage of Assets): 0.36%
Expenses (as a percentage of Assets) 1.11%
Fee Waiver or Reimbursement (0.02%) [1]
Net Expenses (as a percentage of Assets) 1.09% [1]
Class I  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.16%
Expenses (as a percentage of Assets) 0.66%
Fee Waiver or Reimbursement 0.00% [1]
Net Expenses (as a percentage of Assets) 0.66% [1]
Class N  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.07%
Expenses (as a percentage of Assets) 0.57%
Fee Waiver or Reimbursement 0.00% [1]
Net Expenses (as a percentage of Assets) 0.57% [1]
Class T  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.31%
Expenses (as a percentage of Assets) 0.81%
Fee Waiver or Reimbursement 0.00% [1]
Net Expenses (as a percentage of Assets) 0.81% [1]
[1] The Adviser has contractually agreed to waive its investment advisory fee and/or reimburse operating expenses to the extent that the Fund’s total annual fund operating expenses (excluding the fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses) exceed 0.59% for at least a one-year period commencing on October 28, 2026. This fee waiver and/or reimbursement may be revised, extended, or terminated only at the discretion of the Board of Trustees.