Segment Information - Schedule of Average Assets for Segments (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Segment Reporting [Line Items]
Total assets	$ 3,602.8	$ 3,536.4
Operating segments \| Bedding Products
Segment Reporting [Line Items]
Total assets	581.5	635.5
Operating segments \| Specialized Products
Segment Reporting [Line Items]
Total assets	289.2	363.0
Operating segments \| Furniture, Flooring & Textile Products
Segment Reporting [Line Items]
Total assets	327.1	331.1
Average current liabilities included in segment numbers above
Segment Reporting [Line Items]
Average current liabilities included in segment numbers above	592.6	650.0
Unallocated assets and other
Segment Reporting [Line Items]
Total assets	1,798.7	1,807.3
Difference between average assets and period-end balance sheet
Segment Reporting [Line Items]
Total assets	$ 13.7	$ (250.5)

Amount of asset recognized for present right to economic benefit.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant