Janus Henderson Multi-Sector Income Fund Average Annual Total Returns - Class A C S I N T Shares [Member]

12 Months Ended

60 Months Ended

120 Months Ended

Dec. 31, 2025

Dec. 31, 2025

Dec. 31, 2025

Bloomberg U.S. Aggregate Bond Index (reflects no deduction for expenses, fees, or taxes)[Member]

Prospectus [Line Items]

Average Annual Return, Percent

7.30%

(0.36%)

2.01%

Class A | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

4.14%

2.08%

4.05%

Class C | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

^[2]

7.57%

2.30%

3.78%

Class S | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

9.11%

2.83%

4.43%

Class I | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

6.67%

0.86%

2.47%

Class I | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

^[3]

5.61%

1.42%

2.64%

Class I | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

9.59%

3.29%

4.79%

Class N | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

9.69%

3.39%

4.87%

Class T | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

9.56%

3.15%

4.62%

[1]	Calculated assuming maximum permitted sales loads.
[2]	The one year return is calculated to include the contingent deferred sales charge.
[3]	If the Fund incurs a loss, which generates a tax benefit, the Return After Taxes on Distributions and Sale of Fund Shares may exceed the Fund’s other return figures.