GOODWILL IMPAIRMENT TESTING (Details) $ in Millions	6 Months Ended
Jun. 30, 2023 USD ($) reporting_unit	Dec. 31, 2022 USD ($)
Goodwill [Line Items]
Goodwill value	$ 1,477.1	$ 1,474.4
Terminal Values Long-term Growth Rate for Debt-Free Cash Flow	3.00%	3.00%
Bedding, Aerospace, and Hydraulic Cylinders
Goodwill [Line Items]
Number of reporting units \| reporting_unit	3
Bedding Group
Goodwill [Line Items]
Goodwill value	$ 904.0	$ 900.3
Percentage of fair value in excess of carrying amount	40.00%	54.00%
Aerospace Products Group
Goodwill [Line Items]
Goodwill value	$ 67.0	$ 66.3
Percentage of fair value in excess of carrying amount	44.00%	40.00%
Hydraulic Cylinders Group
Goodwill [Line Items]
Goodwill value	$ 36.8	$ 41.5
Percentage of fair value in excess of carrying amount	18.00%	32.00%
Work Furniture And Bedding
Goodwill [Line Items]
Number of reporting units \| reporting_unit	1
Work Furniture Group
Goodwill [Line Items]
Goodwill value	$ 98.9	$ 98.4
Percentage of fair value in excess of carrying amount	74.00%	78.00%
Minimum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales	1.00%	1.00%
Discount Rate Ranges	8.00%	10.00%
Maximum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales	17.00%	9.00%
Discount Rate Ranges	12.00%	12.00%
Less than 50%
Goodwill [Line Items]
Goodwill value	$ 1,007.8	$ 107.8
Terminal Values Long-term Growth Rate for Debt-Free Cash Flow	3.00%	3.00%
Discount Rate Ranges		12.00%
Less than 50% \| Minimum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales	1.00%	4.00%
Discount Rate Ranges	10.00%
Less than 50% \| Maximum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales	17.00%	9.00%
Discount Rate Ranges	12.00%
50%-100%
Goodwill [Line Items]
Goodwill value	$ 98.9	$ 998.7
Compound Annual Growth Rate (CAGR) Range for Sales	1.00%
Terminal Values Long-term Growth Rate for Debt-Free Cash Flow	3.00%	3.00%
Discount Rate Ranges	8.00%	10.00%
50%-100% \| Minimum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales		3.00%
50%-100% \| Maximum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales		5.00%
101% - 300%
Goodwill [Line Items]
Goodwill value	$ 370.4	$ 248.3
Terminal Values Long-term Growth Rate for Debt-Free Cash Flow	3.00%	3.00%
Discount Rate Ranges		10.00%
101% - 300% \| Minimum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales	3.00%	1.00%
Discount Rate Ranges	8.00%
101% - 300% \| Maximum
Goodwill [Line Items]
Compound Annual Growth Rate (CAGR) Range for Sales	6.00%	3.00%
Discount Rate Ranges	10.00%
Greater than 300%
Goodwill [Line Items]
Goodwill value		$ 119.6
Compound Annual Growth Rate (CAGR) Range for Sales		8.00%
Terminal Values Long-term Growth Rate for Debt-Free Cash Flow		3.00%
Discount Rate Ranges		12.00%

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