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Impairment Charges (Goodwill Reporting Unit Impairment) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill impairment	$ 675.3	$ 676.0	$ 0.0	$ 0.0
2024 Restructuring Plan
Goodwill [Line Items]
Goodwill impairment		0.7
Bedding Products
Goodwill [Line Items]
Goodwill impairment		587.9	0.0
Bedding Products | Bedding
Goodwill [Line Items]
Goodwill impairment		587.9
Furniture, Flooring & Textile Products
Goodwill [Line Items]
Goodwill impairment		44.5	0.0
Furniture, Flooring & Textile Products | Work Furniture
Goodwill [Line Items]
Goodwill impairment		44.5
Specialized Products
Goodwill [Line Items]
Goodwill impairment		43.6	$ 0.0
Specialized Products | Hydraulic Cylinders Group
Goodwill [Line Items]
Goodwill impairment		$ 43.6

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- Definition

Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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