Revenue From Contracts With Customers Disaggrated Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Revenue	$ 527.7	$ 691.4	$ 1,716.2	$ 2,019.8
Active Group
Revenue	328.6	398.2	1,097.8	1,172.6
Work Group
Revenue	123.0	157.8	355.3	435.8
Lifestyle Group
Revenue	62.8	117.7	223.0	346.9
Other [Member]
Revenue	13.3	17.7	40.1	64.5
Wholesale Channel [Member]
Revenue	391.1	531.6	1,320.7	1,552.4
Wholesale Channel [Member] | Active Group
Revenue	225.2	288.7	800.4	849.5
Wholesale Channel [Member] | Work Group
Revenue	111.4	145.4	322.4	398.1
Wholesale Channel [Member] | Lifestyle Group
Revenue	42.8	81.7	162.0	244.8
Wholesale Channel [Member] | Other [Member]
Revenue	11.7	15.8	35.9	60.0
Consumer-Direct Channel [Member]
Revenue	136.6	159.8	395.5	467.4
Consumer-Direct Channel [Member] | Active Group
Revenue	103.4	109.5	297.4	323.1
Consumer-Direct Channel [Member] | Work Group
Revenue	11.6	12.4	32.9	37.7
Consumer-Direct Channel [Member] | Lifestyle Group
Revenue	20.0	36.0	61.0	102.1
Consumer-Direct Channel [Member] | Other [Member]
Revenue	$ 1.6	$ 1.9	$ 4.2	$ 4.5