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Acquisitions and Divestitures - Schedule of Business Acquisition, Pro Forma Information (Details) - Mattress Firm - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Business Combination [Line Items]
Pro forma net sales	$ 1,880.8	$ 1,994.4	$ 3,752.6	$ 3,919.6
Pro forma net income (loss)	$ 99.0	$ 117.3	$ (129.8)	$ 83.6

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