Annual Fund Operating Expenses |
Feb. 27, 2026 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Janus Henderson Transformational Growth ETF | Janus Henderson Transformational Growth ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.57% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.57% | |||||||||||||||||||||
| Janus Henderson Asset-Backed Securities ETF | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | February 28, 2028 | |||||||||||||||||||||
| Janus Henderson Asset-Backed Securities ETF | Janus Henderson Asset-Backed Securities ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.33% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | [1] | ||||||||||||||||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.34% | |||||||||||||||||||||
| Fee Waiver or Reimbursement | 0.01% | [3] | ||||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.33% | [3] | ||||||||||||||||||||
| Janus Henderson AAA CLO ETF | Janus Henderson AAA CLO ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.20% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.20% | |||||||||||||||||||||
| Janus Henderson B-BBB CLO ETF | Janus Henderson B-BBB CLO ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.46% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Acquired Fund Fees and Expenses | 0.01% | [4] | ||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.47% | |||||||||||||||||||||
| Janus Henderson Corporate Bond ETF | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | February 28, 2027 | |||||||||||||||||||||
| Janus Henderson Corporate Bond ETF | Janus Henderson Corporate Bond ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.35% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.35% | |||||||||||||||||||||
| Fee Waiver or Reimbursement | 0.15% | [5] | ||||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.20% | [5] | ||||||||||||||||||||
| Janus Henderson Emerging Markets Debt Hard Currency ETF | Janus Henderson Corporate Bond ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.52% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.52% | |||||||||||||||||||||
| Janus Henderson Income ETF | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | February 28, 2028 | |||||||||||||||||||||
| Janus Henderson Income ETF | Janus Henderson Income ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.52% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Acquired Fund Fees and Expenses | 0.04% | [6] | ||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.56% | |||||||||||||||||||||
| Fee Waiver or Reimbursement | 0.02% | [7] | ||||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.54% | [7] | ||||||||||||||||||||
| Janus Henderson Mortgage-Backed Securities ETF | Janus Henderson Mortgage-Backed Securities ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.21% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.21% | |||||||||||||||||||||
| Janus Henderson Securitized Income ETF | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | February 28, 2028 | |||||||||||||||||||||
| Janus Henderson Securitized Income ETF | Janus Henderson Securitized Income ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.49% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Acquired Fund Fees and Expenses | 0.02% | [8] | ||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.51% | |||||||||||||||||||||
| Fee Waiver or Reimbursement | 0.01% | [9] | ||||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.50% | [9] | ||||||||||||||||||||
| Janus Henderson Short Duration Income ETF | Janus Henderson Short Duration Income ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.23% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.23% | |||||||||||||||||||||
| Janus Henderson Global Artificial Intelligence ETF | Janus Henderson Global Artificial Intelligence ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.59% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | [10] | ||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.59% | |||||||||||||||||||||
| Janus Henderson U.S. Real Estate ETF | Janus Henderson U.S. Real Estate ETF | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.65% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.65% | |||||||||||||||||||||
| Janus Henderson Mid Cap Growth Alpha ETF | Janus Henderson Mid Cap Growth Alpha ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.30% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.30% | |||||||||||||||||||||
| Janus Henderson Small Cap Growth Alpha ETF | Janus Henderson Small Cap Growth Alpha ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.30% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.30% | |||||||||||||||||||||
| Janus Henderson Small/Mid Cap Growth Alpha ETF | Janus Henderson Small/Mid Cap Growth Alpha ETF Shares | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.30% | |||||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.00% | |||||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.30% | |||||||||||||||||||||
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