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Impairment Charges (Additional Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Schedule Of Asset Impairment Charges [Line Items] |  |  |  |
Goodwill impairment | $ 675.3 | $ 0.0 | $ 676.0 | $ 0.0
Long-lived asset impairment |  | 19.0 | 6.3 | 443.7
Bedding Products |  |  |  |
Schedule Of Asset Impairment Charges [Line Items] |  |  |  |
Goodwill impairment |  |  | 587.9 |
Long-lived asset impairment |  |  |  | $ 443.7
2024 Restructuring Plan |  |  |  |
Schedule Of Asset Impairment Charges [Line Items] |  |  |  |
Long-lived asset impairment |  | $ 19.0 | 3.5 |
2024 Restructuring Plan | United States Machinery Business |  |  |  |
Schedule Of Asset Impairment Charges [Line Items] |  |  |  |
Goodwill impairment |  |  | $ 0.7 |

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