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Acquisitions and Divestitures - Schedule of Business Acquisition, Pro Forma Information, Nonrecurring Adjustments (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination [Line Items]
Net sales	$ 2,122.6	$ 1,300.0			$ 5,608.1	$ 3,723.0
Total adjustments to net income (loss)	$ 177.7	129.8			244.4	313.1
Mattress Firm
Business Combination [Line Items]
Net sales		817.6			267.1	2,292.7
Total adjustments to net income (loss)		4.1			(209.7)	(94.7)
Business combination, initial accounting incomplete, adjustment to stock compensation expense					340.5
Business combination, acquisition related costs		13.7			$ 50.2	35.8
Income tax (provision) percentage of proforma adjustment					25.00%
Mattress Firm | Mattress Firm pre-acquisition net revenue
Business Combination [Line Items]
Net sales		1,062.3			$ 345.1	2,991.6
Mattress Firm | Elimination of intercompany sales to Mattress Firm (7)
Business Combination [Line Items]
Net sales		(244.7)	$ (233.5)	$ (220.7)	(78.0)	(698.9)
Mattress Firm | Mattress Firm pre-acquisition (loss) earnings
Business Combination [Line Items]
Total adjustments to net income (loss)		10.7			(332.7)	62.0
Mattress Firm | Transaction Costs
Business Combination [Line Items]
Total adjustments to net income (loss)		0.0			50.2	(50.2)
Mattress Firm | Intercompany Profit Elimination
Business Combination [Line Items]
Total adjustments to net income (loss)		8.4			78.5	(64.9)
Mattress Firm | Purchase Price Allocation Adjustments
Business Combination [Line Items]
Total adjustments to net income (loss)		0.9			16.7	(18.3)
Mattress Firm | Interest expense adjustments
Business Combination [Line Items]
Total adjustments to net income (loss)		(18.1)			(1.9)	(52.9)
Mattress Firm | Tax effect of Pro Forma Adjustments
Business Combination [Line Items]
Total adjustments to net income (loss)		$ 2.2			$ (20.5)	$ 29.6

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