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Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Net trade sales	$ 1,036.4	$ 1,101.7	$ 3,116.5	$ 3,327.2
Bedding Products | Bedding Group
Disaggregation of Revenue [Line Items]
Net trade sales	402.5	445.5	1,184.6	1,331.5
Specialized Products
Disaggregation of Revenue [Line Items]
Net trade sales	277.5	299.9	881.7	935.4
Specialized Products | Automotive Group
Disaggregation of Revenue [Line Items]
Net trade sales	199.5	204.6	599.4	629.5
Specialized Products | Aerospace products group
Disaggregation of Revenue [Line Items]
Net trade sales	28.6	44.9	132.2	138.0
Specialized Products | Hydraulic Cylinders Group
Disaggregation of Revenue [Line Items]
Net trade sales	49.4	50.4	150.1	167.9
Furniture, Flooring & Textile Products
Disaggregation of Revenue [Line Items]
Net trade sales	356.4	356.3	1,050.2	1,060.3
Furniture, Flooring & Textile Products | Home Furniture Group
Disaggregation of Revenue [Line Items]
Net trade sales	61.9	65.6	189.9	207.5
Furniture, Flooring & Textile Products | Work Furniture Group
Disaggregation of Revenue [Line Items]
Net trade sales	68.9	67.9	209.9	207.2
Furniture, Flooring & Textile Products | Flooring & Textile Products Group
Disaggregation of Revenue [Line Items]
Net trade sales	$ 225.6	$ 222.8	$ 650.4	$ 645.6

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