The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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GOODWILL AND INTANGIBLE ASSETS, NET - INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jul. 06, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 72.4	$ 66.1
Accumulated Amortization	(59.0)	(57.8)
Net Carrying Amount	13.4	8.3
Aggregate Amortization Expense	2.2	1.8	$ 1.8
Estimated Aggregate Intangible Asset Amortization Expense
2022	2.3
2023	1.7
2024	1.5
2025	1.4
2026	$ 1.3
Technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	7 years
Gross Carrying Amount	$ 9.8	10.1
Accumulated Amortization	(9.7)	(9.6)
Net Carrying Amount	$ 0.1	0.5
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	19 years
Gross Carrying Amount	$ 31.9	26.1
Accumulated Amortization	(25.4)	(24.1)
Net Carrying Amount	$ 6.5	2.0
Customer Relationships \| Murray Design & Engineering, Ltd.
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	7 years
Estimated Aggregate Intangible Asset Amortization Expense
Intangible assets recognized in acquisition				$ 6.3
Land Use Rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	80 years
Gross Carrying Amount	$ 4.4	4.4
Accumulated Amortization	(0.8)	(0.7)
Net Carrying Amount	$ 3.6	3.7
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	8 years
Gross Carrying Amount	$ 26.3	25.5
Accumulated Amortization	(23.1)	(23.4)
Net Carrying Amount	$ 3.2	$ 2.1
Trademarks \| Murray Design & Engineering, Ltd.
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	10 years
Estimated Aggregate Intangible Asset Amortization Expense
Intangible assets recognized in acquisition				$ 1.3