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Acquisitions and Divestitures - Schedule of Business Acquisition, Pro Forma Information, Nonrecurring Adjustments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Business Acquisition [Line Items]
Net sales	$ 1,604.7	$ 1,189.4
Total adjustments to net loss	(32.8)	76.8
Mattress Firm
Business Acquisition [Line Items]
Net sales	267.1	735.8
Total adjustments to net loss	(208.0)	(110.0)
Business combination, initial accounting incomplete, adjustment to stock compensation expense	340.5
Business combination, acquisition related costs	$ 50.2	14.8
Income tax (provision) percentage of proforma adjustment	25.00%
Mattress Firm | Mattress Firm pre-acquisition net revenue
Business Acquisition [Line Items]
Net sales	$ 345.1	947.6
Mattress Firm | Elimination of intercompany sales to Mattress Firm
Business Acquisition [Line Items]
Net sales	(78.0)	(211.8)
Mattress Firm | Pre-Acquisition (Loss) Earnings
Business Acquisition [Line Items]
Total adjustments to net loss	(318.3)	19.1
Mattress Firm | Transaction Costs
Business Acquisition [Line Items]
Total adjustments to net loss	50.2	(50.2)
Mattress Firm | Intercompany Profit Elimination
Business Acquisition [Line Items]
Total adjustments to net loss	62.0	(62.0)
Mattress Firm | Purchase Price Allocation Adjustments
Business Acquisition [Line Items]
Total adjustments to net loss	16.7	(20.1)
Mattress Firm | Interest expense adjustments
Business Acquisition [Line Items]
Total adjustments to net loss	(2.4)	(17.2)
Mattress Firm | Tax effect of Pro Forma Adjustments
Business Acquisition [Line Items]
Total adjustments to net loss	$ (16.2)	$ 20.4

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