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INCOME TAXES (Taxes Paid) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income taxes    
Income taxes paid (in dollars) $ 6.6 $ 1.1
Income tax refunds received (in dollars)   $ 1.0
Maximum    
Income taxes    
Income tax refunds received (in dollars) $ 0.1