Janus Henderson Developed World Bond Fund Annual Fund Operating Expenses - Class A C S I N T Shares [Member] - Janus Henderson Developed World 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 Fund is subject to several contractual fee waivers and/or expense reimbursement agreements, each of which may be revised, extended, or terminated only at the discretion of the Board of Trustees, as follows:</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;">(i) 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 (but excluding out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees), acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses) exceed 0.57%;</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;">(ii)</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;"> the Adviser shall waive and/or reimburse a portion of the Fund’s management fee in an amount equal to the management fee it earns as an investment adviser to any affiliated exchange-traded funds (“ETFs”) in which the Fund invests, less certain operating expenses;</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;">(iii) the Adviser shall waive and/or reimburse a portion of the Fund’s management fee in an amount equal to the management fee payable in connection with any investment in an affiliated listed investment trust in which the Fund invests, less certain operating expenses; and (iv) the Adviser shall waive and/or reimburse a portion of the Fund’s management fee in an amount equal to the management fee it earns as an investment adviser to any affiliated UCITS ETF. The contractual waivers will remain in effect for at least a one-year period commencing on October 28, 2026.</span> | |||
| Class A | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.55% | |||
| Distribution and Service (12b-1) Fees | 0.25% | |||
| Other Expenses (as a percentage of Assets): | 0.42% | |||
| Expenses (as a percentage of Assets) | 1.22% | |||
| Fee Waiver or Reimbursement | (0.40%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.82% | [1] | ||
| Class C | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.55% | |||
| Distribution and Service (12b-1) Fees | 1.00% | |||
| Other Expenses (as a percentage of Assets): | 0.28% | |||
| Expenses (as a percentage of Assets) | 1.83% | |||
| Fee Waiver or Reimbursement | (0.26%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 1.57% | [1] | ||
| Class S | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.55% | |||
| Distribution and Service (12b-1) Fees | 0.25% | |||
| Other Expenses (as a percentage of Assets): | 4.30% | |||
| Expenses (as a percentage of Assets) | 5.10% | |||
| Fee Waiver or Reimbursement | (4.03%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 1.07% | [1] | ||
| Class I | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.55% | |||
| Distribution and Service (12b-1) Fees | 0.00% | |||
| Other Expenses (as a percentage of Assets): | 0.28% | |||
| Expenses (as a percentage of Assets) | 0.83% | |||
| Fee Waiver or Reimbursement | (0.26%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.57% | [1] | ||
| Class N | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.55% | |||
| Distribution and Service (12b-1) Fees | 0.00% | |||
| Other Expenses (as a percentage of Assets): | 0.14% | |||
| Expenses (as a percentage of Assets) | 0.69% | |||
| Fee Waiver or Reimbursement | (0.12%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.57% | [1] | ||
| Class T | ||||
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.55% | |||
| Distribution and Service (12b-1) Fees | 0.00% | |||
| Other Expenses (as a percentage of Assets): | 0.42% | |||
| Expenses (as a percentage of Assets) | 0.97% | |||
| Fee Waiver or Reimbursement | (0.15%) | [1] | ||
| Net Expenses (as a percentage of Assets) | 0.82% | [1] | ||
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