Janus Henderson Low Duration Multi-Sector Income Fund Average Annual Total Returns - Class A C S I N R 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%

Bloomberg U.S. Aggregate Bond 1-3 Year Index (reflects no deduction for expenses, fees, or taxes)[Member]

Prospectus [Line Items]

Average Annual Return, Percent

5.39%

1.98%

2.08%

Class A | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

1.33%

2.26%

2.05%

Class C | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

^[2]

4.70%

2.52%

1.82%

Class S | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

6.24%

3.07%

2.36%

Class I | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

4.55%

2.09%

1.50%

Class I | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

^[3]

3.90%

2.07%

1.57%

Class I | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

6.66%

3.51%

2.80%

Class N | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

6.77%

3.57%

2.86%

Class R | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

5.97%

2.82%

2.11%

Class T | Return Before Taxes[Member]

Prospectus [Line Items]

Average Annual Return, Percent

6.41%

3.35%

2.63%

[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.