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GOODWILL AND INTANGIBLE ASSETS, NET INTANGIBLE ASSETS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Definite-lived intangible assets - Gross Carrying Amount $ 83.3 $ 83.8  
Definite-lived intangible assets - Accumulated Amortization (69.5) (65.4)  
Definite-lived intangible assets - Net Carrying Amount 13.8 18.4  
Aggregate Amortization Expense 2.0 2.9 $ 3.0
Estimated Aggregate Intangible Asset Amortization Expense      
2018 1.9    
2019 1.7    
2020 1.7    
2021 1.6    
2022 $ 1.4    
Technology, Intangible Asset      
Finite-Lived Intangible Assets [Line Items]      
Definite-lived intangible assets - Weighted Average Life (in years) 7 years    
Definite-lived intangible assets - Gross Carrying Amount $ 18.8 17.0  
Definite-lived intangible assets - Accumulated Amortization (17.8) (15.7)  
Definite-lived intangible assets - Net Carrying Amount $ 1.0 1.3  
Customer Relationships      
Finite-Lived Intangible Assets [Line Items]      
Definite-lived intangible assets - Weighted Average Life (in years) 20 years    
Definite-lived intangible assets - Gross Carrying Amount $ 33.2 33.1  
Definite-lived intangible assets - Accumulated Amortization (28.3) (25.2)  
Definite-lived intangible assets - Net Carrying Amount $ 4.9 7.9  
Land Use Rights      
Finite-Lived Intangible Assets [Line Items]      
Definite-lived intangible assets - Weighted Average Life (in years) 82 years    
Definite-lived intangible assets - Gross Carrying Amount $ 4.8 7.9  
Definite-lived intangible assets - Accumulated Amortization (0.6) (0.9)  
Definite-lived intangible assets - Net Carrying Amount $ 4.2 7.0  
Other Intangible Assets      
Finite-Lived Intangible Assets [Line Items]      
Definite-lived intangible assets - Weighted Average Life (in years) 8 years    
Definite-lived intangible assets - Gross Carrying Amount $ 26.5 25.8  
Definite-lived intangible assets - Accumulated Amortization (22.8) (23.6)  
Definite-lived intangible assets - Net Carrying Amount $ 3.7 $ 2.2