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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