GOODWILL AND INTANGIBLE ASSETS, NET GOODWILL AND INTANGIBLE ASSETS, NET - INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets - Gross Carrying Amount	$ 88.2		$ 88.2		$ 88.3
Definite-lived intangible assets - Accumulated Amortization	(66.2)		(66.2)		(65.7)
Definite-lived intangible assets - Net Carrying Amount	22.0		22.0		22.6
Aggregate Amortization Expense	0.7	$ 0.7	1.4	$ 1.5
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2016	2.9		2.9
2017	2.8		2.8
2018	2.3		2.3
2019	2.2		2.2
2020	2.2		$ 2.2
Technology
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets - Weighted Average Life (in years)			7 years
Definite-lived intangible assets - Gross Carrying Amount	17.9		$ 17.9		17.3
Definite-lived intangible assets - Accumulated Amortization	(16.3)		(16.3)		(15.7)
Definite-lived intangible assets - Net Carrying Amount	1.6		$ 1.6		1.6
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets - Weighted Average Life (in years)			21 years
Definite-lived intangible assets - Gross Carrying Amount	34.2		$ 34.2		34.8
Definite-lived intangible assets - Accumulated Amortization	(24.8)		(24.8)		(24.9)
Definite-lived intangible assets - Net Carrying Amount	9.4		$ 9.4		9.9
Land Use Rights
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets - Weighted Average Life (in years)			67 years
Definite-lived intangible assets - Gross Carrying Amount	8.2		$ 8.2		8.2
Definite-lived intangible assets - Accumulated Amortization	(0.9)		(0.9)		(0.9)
Definite-lived intangible assets - Net Carrying Amount	7.3		$ 7.3		7.3
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets - Weighted Average Life (in years)			6 years
Definite-lived intangible assets - Gross Carrying Amount	27.9		$ 27.9		28.0
Definite-lived intangible assets - Accumulated Amortization	(24.2)		(24.2)		(24.2)
Definite-lived intangible assets - Net Carrying Amount	$ 3.7		$ 3.7		$ 3.8