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DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Derivative [Line Items]    
Cash flow hedge gain (loss) to be reclassified within twelve months $ (2.7)  
Derivatives designated as hedges | Foreign exchange contracts    
Derivative [Line Items]    
Derivative notional amount 313.9 $ 313.4
Derivatives designated as hedges | Cross currency swaps    
Derivative [Line Items]    
Derivative notional amount 46.4 48.0
Derivatives designated as hedges | Commodity swaps    
Derivative [Line Items]    
Derivative notional amount 16.1  
Derivatives not designated as hedges | Foreign exchange contracts    
Derivative [Line Items]    
Derivative notional amount $ 59.8 $ 113.2