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DEBT - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Debt Disclosure [Abstract]    
Short-Term Borrowings $ 4.5 $ 3.9
Line of credit facility, interest rate during period 27.50%  
Line of credit, current $ 0.0  
Line of credit facility, remaining borrowing capacity 750.0  
Line of Credit Facility, Remaining Borrowing Capacity 750.0  
Long-term debt - fair value $ 3,165.2