Janus Henderson Short Duration Flexible Bond Fund Annual Fund Operating Expenses - Class A C S I N T Shares [Member] - Janus Henderson Short Duration Flexible Bond Fund |
Jun. 30, 2026 |
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| 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 0.32%. In addition, the Adviser shall reimburse or waive out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees, payable by any share class so that such fees, in the aggregate, do not exceed 0.06% of a share class’s average daily net assets. The 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 A | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.25% | |||
| Distribution and Service (12b-1) Fees | 0.25% | |||
| Other Expenses (as a percentage of Assets): | 0.11% | |||
| Expenses (as a percentage of Assets) | 0.61% | |||
| Fee Waiver or Reimbursement | (0.01%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.60% | [1] | ||
| Class C | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.25% | |||
| Distribution and Service (12b-1) Fees | 1.00% | |||
| Other Expenses (as a percentage of Assets): | 0.20% | |||
| Expenses (as a percentage of Assets) | 1.45% | |||
| Fee Waiver or Reimbursement | (0.07%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 1.38% | [1] | ||
| Class S | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.25% | |||
| Distribution and Service (12b-1) Fees | 0.25% | |||
| Other Expenses (as a percentage of Assets): | 1.15% | |||
| Expenses (as a percentage of Assets) | 1.65% | |||
| Fee Waiver or Reimbursement | (0.82%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.83% | [1] | ||
| Class I | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.25% | |||
| Distribution and Service (12b-1) Fees | 0.00% | |||
| Other Expenses (as a percentage of Assets): | 0.23% | |||
| Expenses (as a percentage of Assets) | 0.48% | |||
| Fee Waiver or Reimbursement | (0.10%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.38% | [1] | ||
| Class N | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.25% | |||
| Distribution and Service (12b-1) Fees | 0.00% | |||
| Other Expenses (as a percentage of Assets): | 0.12% | |||
| Expenses (as a percentage of Assets) | 0.37% | |||
| Fee Waiver or Reimbursement | (0.05%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.32% | [1] | ||
| Class T | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.25% | |||
| Distribution and Service (12b-1) Fees | 0.00% | |||
| Other Expenses (as a percentage of Assets): | 0.34% | |||
| Expenses (as a percentage of Assets) | 0.59% | |||
| Fee Waiver or Reimbursement | (0.02%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.57% | [1] | ||
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