Goodwill and Other Intangible Assets (Changes In The Carrying Amounts Of Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Net goodwill, beginning of period		$ 794.4	$ 1,489.8
Impairment charges	$ (675.3)	0.0	(676.0)	$ 0.0
Allocations to divested businesses (see Note S)		(68.9)
Foreign currency translation adjustment		25.9	(19.4)
Net goodwill, end of period		751.4	794.4	1,489.8
Gross goodwill		1,775.5
Accumulated impairment charges		(1,024.1)
Goodwill		751.4	794.4	1,489.8
Bedding Products
Goodwill [Roll Forward]
Net goodwill, beginning of period		310.0	906.5
Impairment charges			(587.9)
Allocations to divested businesses (see Note S)		0.0
Foreign currency translation adjustment		13.7	(8.6)
Net goodwill, end of period		323.7	310.0	906.5
Gross goodwill		917.0
Accumulated impairment charges		(593.3)
Goodwill		323.7	310.0	906.5
Specialized Products
Goodwill [Roll Forward]
Net goodwill, beginning of period		182.9	233.7
Impairment charges			(43.6)
Allocations to divested businesses (see Note S)		(67.8)
Foreign currency translation adjustment		7.5	(7.2)
Net goodwill, end of period		122.6	182.9	233.7
Gross goodwill		258.3
Accumulated impairment charges		(135.7)
Goodwill		122.6	182.9	233.7
Furniture, Flooring & Textile Products
Goodwill [Roll Forward]
Net goodwill, beginning of period		301.5	349.6
Impairment charges			(44.5)
Allocations to divested businesses (see Note S)		(1.1)
Foreign currency translation adjustment		4.7	(3.6)
Net goodwill, end of period		305.1	301.5	349.6
Gross goodwill		600.2
Accumulated impairment charges		(295.1)
Goodwill		$ 305.1	$ 301.5	$ 349.6