Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Revenue (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Net trade sales	$ 999.7	$ 1,058.0	$ 1,917.9	$ 2,080.1
Bedding Products \| Bedding Group
Disaggregation of Revenue [Line Items]
Net trade sales	386.9	391.4	751.8	782.1
Specialized Products
Disaggregation of Revenue [Line Items]
Net trade sales	247.0	304.1	491.1	604.2
Specialized Products \| Automotive Group
Disaggregation of Revenue [Line Items]
Net trade sales	198.6	202.7	392.8	399.9
Specialized Products \| Aerospace products group
Disaggregation of Revenue [Line Items]
Net trade sales	0.0	50.6	0.0	103.6
Specialized Products \| Hydraulic Cylinders Group
Disaggregation of Revenue [Line Items]
Net trade sales	48.4	50.8	98.3	100.7
Furniture, Flooring & Textile Products
Disaggregation of Revenue [Line Items]
Net trade sales	365.8	362.5	675.0	693.8
Furniture, Flooring & Textile Products \| Home Furniture Group
Disaggregation of Revenue [Line Items]
Net trade sales	57.9	61.2	116.3	128.0
Furniture, Flooring & Textile Products \| Work Furniture Group
Disaggregation of Revenue [Line Items]
Net trade sales	69.7	72.1	138.5	141.0
Furniture, Flooring & Textile Products \| Flooring & Textile Products Group
Disaggregation of Revenue [Line Items]
Net trade sales	$ 238.2	$ 229.2	$ 420.2	$ 424.8