GOODWILL AND INTANGIBLE ASSETS, NET GOODWILL AND INTANGIBLE ASSETS, NET - INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Definite-lived intangible assets:
Gross Carrying Amount	$ 64.4		$ 64.6
Accumulated Amortization	(53.4)		(53.2)
Net Carrying Amount	11.0		11.4
Aggregate Amortization Expense	0.4	$ 0.5
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2019	1.8
2020	1.7
2021	1.6
2022	1.4
2023	$ 0.9
Technology
Definite-lived intangible assets:
Weighted Average Life (in years)	7 years
Gross Carrying Amount	$ 9.4		9.7
Accumulated Amortization	(8.8)		(9.1)
Net Carrying Amount	$ 0.6		0.6
Customer Relationships
Definite-lived intangible assets:
Weighted Average Life (in years)	22 years
Gross Carrying Amount	$ 25.6		25.6
Accumulated Amortization	(22.2)		(21.7)
Net Carrying Amount	$ 3.4		3.9
Land Use Rights
Definite-lived intangible assets:
Weighted Average Life (in years)	81 years
Gross Carrying Amount	$ 4.4		4.4
Accumulated Amortization	(0.6)		(0.6)
Net Carrying Amount	$ 3.8		3.8
Other
Definite-lived intangible assets:
Weighted Average Life (in years)	8 years
Gross Carrying Amount	$ 25.0		24.9
Accumulated Amortization	(21.8)		(21.8)
Net Carrying Amount	$ 3.2		$ 3.1

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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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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