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Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions		3 Months Ended
	Feb. 05, 2025 retailLocation	Mar. 31, 2025 USD ($) channel	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Number of products sales channels | channel		2
Cost of sales		$ 1,024.2	$ 715.1
Revision of Prior Period, Adjustment
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Cost of sales		$ 38.3
Minimum | Mattress Firm
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Number of retail locations | retailLocation	2,200
Asia Pacific Joint Ventures
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Ownership percentage		50.00%
United Kingdom Joint Venture
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Ownership percentage		50.00%
Accrued Expenses And Other Current Liabilities
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Standard product warranty accrual		$ 22.4		$ 15.3
Other Noncurrent Liabilities
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Standard product warranty accrual		$ 36.2		$ 18.3

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