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Summary of Significant Accounting Policies (Details) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 USD ($) channel | Dec. 31, 2023 USD ($)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Number of products sales channels | channel | 2 |
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] |  |
Accrued warranty expense | $ 17.5 | $ 18.9
Other non-current assets |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Accrued warranty expense | $ 19.1 | $ 21.9
Bedding | Non-prorated | International |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 5 years |
Bedding | Prorated | International |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 10 years |
Bedding | Minimum | North America |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 10 years |
Bedding | Minimum | International |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 5 years |
Bedding | Minimum | Non-prorated | North America |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 10 years |
Bedding | Maximum | North America |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 25 years |
Bedding | Maximum | International |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 15 years |
Bedding | Maximum | Non-prorated | North America |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 15 years |
Pillows | North America |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Warranty term (in years) | 3 years |

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