Segment Information - Summary of Segment Results from Continuing Operations (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) segment	Jun. 30, 2023 USD ($)
Segment Reporting [Abstract]
Number of operating segments \| segment			3
Segment Reporting Information [Line Items]
Net trade sales	$ 1,128.6	$ 1,221.2	$ 2,225.5	$ 2,434.8
EBIT	(614.3)	95.7	(551.3)	185.0
Depreciation and Amortization	32.6	44.7	65.5	90.1
Goodwill impairment	675.3		675.3	0.0
Bedding Products
Segment Reporting Information [Line Items]
Net trade sales	438.0	504.4	886.0	1,032.9
Goodwill impairment	587.2		587.2
Specialized Products
Segment Reporting Information [Line Items]
Net trade sales	319.6	321.2	635.5	641.9
Goodwill impairment	43.6		43.6
Furniture, Flooring & Textile Products
Segment Reporting Information [Line Items]
Net trade sales	371.0	395.6	704.0	760.0
Trade sales
Segment Reporting Information [Line Items]
Net trade sales	1,139.4	1,233.6	2,245.6	2,460.3
Trade sales \| Bedding Products
Segment Reporting Information [Line Items]
Net trade sales	444.5	512.9	898.9	1,051.0
EBIT	(591.8)	23.0	(576.1)	56.3
Depreciation and Amortization	14.3	25.5	28.9	51.1
Trade sales \| Specialized Products
Segment Reporting Information [Line Items]
Net trade sales	320.9	321.7	637.2	642.8
EBIT	(9.5)	33.1	14.2	61.8
Depreciation and Amortization	10.3	10.3	20.4	21.0
Trade sales \| Furniture, Flooring & Textile Products
Segment Reporting Information [Line Items]
Net trade sales	374.0	399.0	709.5	766.5
EBIT	(9.4)	38.9	14.2	67.2
Depreciation and Amortization	5.5	5.7	10.8	11.5
Intersegment eliminations
Segment Reporting Information [Line Items]
Net trade sales	10.8	12.4	20.1	25.5
EBIT	(3.6)	0.7	(3.6)	(0.3)
Depreciation and Amortization	2.5	3.2	5.4	6.5
Intersegment eliminations \| Bedding Products
Segment Reporting Information [Line Items]
Net trade sales	6.5	8.5	12.9	18.1
Intersegment eliminations \| Specialized Products
Segment Reporting Information [Line Items]
Net trade sales	1.3	0.5	1.7	0.9
Intersegment eliminations \| Furniture, Flooring & Textile Products
Segment Reporting Information [Line Items]
Net trade sales	$ 3.0	$ 3.4	$ 5.5	$ 6.5

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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