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Acquisitions and Divestitures - Schedule of Business Acquisition, Pro Forma Information (Details) - Mattress Firm - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination [Line Items]
Pro forma net sales	$ 2,122.6	$ 2,117.6	$ 5,875.2	$ 6,015.7
Pro forma net income	$ 177.4	$ 134.1	$ 33.6	$ 217.7

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