Restructuring and Related Activities (Summary of Incurred Costs) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended			24 Months Ended
	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]
Goodwill impairment	$ 675.3	$ 0.0	$ 676.0	$ 0.0
Bedding Products
Restructuring Cost and Reserve [Line Items]
Goodwill impairment			587.9
2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total Incurred Cost		29.7	47.8		$ 77.5
Total Approximate Amount Expected to be Incurred		80.0			80.0
2024 Restructuring Plan \| United States Machinery Business
Restructuring Cost and Reserve [Line Items]
Goodwill impairment			0.7
Net cash restructuring and restructuring-related costs \| 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total Incurred Cost		8.7	30.3		39.0
Total Approximate Amount Expected to be Incurred		40.0			40.0
Net non-cash restructuring and restructuring-related costs \| 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total Incurred Cost		2.0	13.3		15.3
Total Approximate Amount Expected to be Incurred		17.0			17.0
Total net restructuring and restructuring-related costs \| 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total Incurred Cost		10.7	43.6		54.3
Total Approximate Amount Expected to be Incurred		57.0			57.0
Total net restructuring and restructuring-related costs \| 2024 Restructuring Plan \| Bedding Products
Restructuring Cost and Reserve [Line Items]
Total Incurred Cost		5.6	33.9
Goodwill and long-lived asset impairment costs \| 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total Incurred Cost		19.0	$ 4.2		23.2
Total Approximate Amount Expected to be Incurred		$ 23.0			$ 23.0