Segment Information - Schedule of Average Assets for Segments (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total assets	$ 3,703.7	$ 3,661.6
Operating segments \| Bedding Products
Segment Reporting Information [Line Items]
Total assets	662.0	741.8
Operating segments \| Specialized Products
Segment Reporting Information [Line Items]
Total assets	393.0	398.7
Operating segments \| Furniture, Flooring & Textile Products
Segment Reporting Information [Line Items]
Total assets	334.3	346.1
Average current liabilities included in segment numbers above
Segment Reporting Information [Line Items]
Average current liabilities included in segment numbers above	655.3	692.7
Unallocated assets
Segment Reporting Information [Line Items]
Total assets	1,669.9	1,634.0
Difference between average assets and period-end balance sheet
Segment Reporting Information [Line Items]
Total assets	$ (10.8)	$ (151.7)

Amount of asset recognized for present right to economic benefit.

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