Janus Henderson Balanced Portfolio Annual Fund Operating Expenses - Service Shares [Member] - Janus Henderson Balanced Portfolio - Service Shares	Dec. 31, 2025
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):	0.07%
Expenses (as a percentage of Assets)	0.87%

- References

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- References

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