Revenue From Contracts With Customers Disaggrated Revenue (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Oct. 03, 2026	Sep. 27, 2025	Oct. 03, 2026	Sep. 27, 2025
Revenue	$ 505.4	$ 470.3	$ 1,469.4	$ 1,356.8
Active Group
Revenue	387.8	352.8	1,147.8	1,035.0
Work Group
Revenue	106.9	105.9	288.5	288.2
Other [Member]
Revenue	10.7	11.6	33.1	33.6
Wholesale Channel [Member]
Revenue	396.3	363.5	1,149.3	1,042.0
Wholesale Channel [Member] \| Active Group
Revenue	287.5	255.0	854.6	747.6
Wholesale Channel [Member] \| Work Group
Revenue	99.2	98.0	264.5	263.9
Wholesale Channel [Member] \| Other [Member]
Revenue	9.6	10.5	30.2	30.5
Consumer-Direct Channel [Member]
Revenue	109.1	106.8	320.1	314.8
Consumer-Direct Channel [Member] \| Active Group
Revenue	100.3	97.8	293.2	287.4
Consumer-Direct Channel [Member] \| Work Group
Revenue	7.7	7.9	24.0	24.3
Consumer-Direct Channel [Member] \| Other [Member]
Revenue	$ 1.1	$ 1.1	$ 2.9	$ 3.1

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details