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 - INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Apr. 01, 2023	Dec. 31, 2022
Definite-lived intangible assets:
Gross Carrying Amount	$ 79.0		$ 79.0			$ 77.9
Accumulated Amortization	(62.2)		(62.2)			(60.5)
Net Carrying Amount	16.8		16.8			17.4
Aggregate Amortization Expense	0.6	$ 0.6	1.4	$ 1.2
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2023	2.5		2.5
2024	2.3		2.3
2025	2.2		2.2
2026	2.0		2.0
2027	$ 2.0		$ 2.0
Technology
Definite-lived intangible assets:
Weighted Average Life (in years)	7 years		7 years
Gross Carrying Amount	$ 9.5		$ 9.5			9.3
Accumulated Amortization	(9.4)		(9.4)			(9.2)
Net Carrying Amount	$ 0.1		$ 0.1			0.1
Customer Relationships
Definite-lived intangible assets:
Weighted Average Life (in years)	17 years		17 years
Gross Carrying Amount	$ 35.4		$ 35.4			34.8
Accumulated Amortization	(27.8)		(27.8)			(26.8)
Net Carrying Amount	$ 7.6		$ 7.6			8.0
Customer Relationships \| MARCO
Definite-lived intangible assets:
Weighted Average Life (in years)					4 years
Intangible assets aquired					$ 0.2
Land Use Rights
Definite-lived intangible assets:
Weighted Average Life (in years)	80 years		80 years
Gross Carrying Amount	$ 3.9		$ 3.9			4.0
Accumulated Amortization	(0.8)		(0.8)			(0.8)
Net Carrying Amount	$ 3.1		$ 3.1			3.2
Other
Definite-lived intangible assets:
Weighted Average Life (in years)	9 years		9 years
Gross Carrying Amount	$ 30.2		$ 30.2			29.8
Accumulated Amortization	(24.2)		(24.2)			(23.7)
Net Carrying Amount	$ 6.0		$ 6.0			$ 6.1
Trademarks \| MARCO
Definite-lived intangible assets:
Weighted Average Life (in years)					10 years
Intangible assets aquired					$ 0.3