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Restructuring and Related Activities - Summary of Restructuring-Related Costs by Segment (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Aug. 31, 2024	Sep. 30, 2024	Sep. 30, 2024
2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring-related costs		$ 12.3	$ 34.3
Bedding Products
Restructuring Cost and Reserve [Line Items]
Gains from the sale of real estate	$ 14.0
Net restructuring and restructuring-related | 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring-related costs		11.7	31.1
Net restructuring and restructuring-related | Bedding Products | 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring-related costs		7.4	24.0
Net restructuring and restructuring-related | Specialized Products | 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring-related costs		3.8	5.1
Net restructuring and restructuring-related | Furniture, Flooring & Textile Products | 2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring-related costs		$ 0.5	$ 2.0

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- Definition

The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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