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Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Money market funds	$ 579.8			$ 579.8		$ 304.1
Dividend income	$ 2.9		$ 1.0	5.4	$ 2.7
Impairment and loss on sale of business line			3.4		3.4
Proceeds from sale of productive assets				$ 290.0
impairment charges			6.3		6.3
Impairment of long-lived asset held for use			$ 2.9		$ 2.9
Discontinued Operations, Held-for-Sale \| Jack Wolfskin
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impairment and loss on sale of business line		$ 7.0