v3.26.3
Janus Henderson Short Duration Flexible Bond Fund Annual Fund Operating Expenses - Class D Shares [Member] - Janus Henderson Short Duration Flexible Bond 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 shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses) exceed 0.32%. In addition, the Adviser shall reimburse or waive out-of-pocket transfer agency/shareholder servicing costs, payable by any share class so that such fees do not exceed 0.06% of a share class’s average daily net assets. These contractual waivers will remain in effect for at least a one-year period commencing on October 28, 2026. These fee waivers and/or reimbursements 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 D  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.25%
Other Expenses (as a percentage of Assets): 0.23%
Expenses (as a percentage of Assets) 0.48%
Fee Waiver or Reimbursement (0.03%) [1]
Net Expenses (as a percentage of Assets) 0.45% [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 shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses) exceed 0.32%. In addition, the Adviser shall reimburse or waive out-of-pocket transfer agency/shareholder servicing costs, payable by any share class so that such fees do not exceed 0.06% of a share class’s average daily net assets. These contractual waivers will remain in effect for at least a one-year period commencing on October 28, 2026. These fee waivers and/or reimbursements may be revised, extended, or terminated only at the discretion of the Board of Trustees.