Segment Information - Summary of Segment Results from Continuing Operations (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) segment	Sep. 30, 2023 USD ($)
Segment Reporting [Abstract]
Number of operating segments \| segment			3
Segment Reporting Information [Line Items]
Net trade sales	$ 1,101.7	$ 1,175.4	$ 3,327.2	$ 3,610.2
EBIT	77.7	91.4	(473.6)	276.4
Depreciation and Amortization	36.4	45.0	101.9	135.1
Goodwill impairment	0.0		675.3	0.0
Bedding Products
Segment Reporting Information [Line Items]
Net trade sales	445.5	483.3	1,331.5	1,516.2
Goodwill impairment	0.0		587.2
Specialized Products
Segment Reporting Information [Line Items]
Net trade sales	299.9	319.4	935.4	961.3
Goodwill impairment	0.0		43.6
Furniture, Flooring & Textile Products
Segment Reporting Information [Line Items]
Net trade sales	356.3	372.7	1,060.3	1,132.7
Trade sales
Segment Reporting Information [Line Items]
Net trade sales	1,111.4	1,185.9	3,357.0	3,646.2
Trade sales \| Bedding Products
Segment Reporting Information [Line Items]
Net trade sales	451.6	490.7	1,350.5	1,541.7
EBIT	25.5	31.1	(550.6)	87.4
Depreciation and Amortization	14.8	26.2	43.7	77.3
Trade sales \| Specialized Products
Segment Reporting Information [Line Items]
Net trade sales	301.4	319.7	938.6	962.5
EBIT	24.8	31.2	39.0	93.0
Depreciation and Amortization	11.0	10.7	31.4	31.7
Trade sales \| Furniture, Flooring & Textile Products
Segment Reporting Information [Line Items]
Net trade sales	358.4	375.5	1,067.9	1,142.0
EBIT	27.4	29.5	41.6	96.7
Depreciation and Amortization	5.4	5.5	16.2	17.0
Intersegment eliminations
Segment Reporting Information [Line Items]
Net trade sales	9.7	10.5	29.8	36.0
EBIT	0.0	(0.4)	(3.6)	(0.7)
Depreciation and Amortization	5.2	2.6	10.6	9.1
Intersegment eliminations \| Bedding Products
Segment Reporting Information [Line Items]
Net trade sales	6.1	7.4	19.0	25.5
Intersegment eliminations \| Specialized Products
Segment Reporting Information [Line Items]
Net trade sales	1.5	0.3	3.2	1.2
Intersegment eliminations \| Furniture, Flooring & Textile Products
Segment Reporting Information [Line Items]
Net trade sales	$ 2.1	$ 2.8	$ 7.6	$ 9.3

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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