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DISTRIBUTION AGREEMENTS (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
DISTRIBUTION AGREEMENTS        
Termination costs $ 14.1 $ 15.9 $ 26.6 $ 35.9
Distribution agreement (in years)     20 years  
Revenue recognized $ 11.1 $ 11.4 $ 33.3 $ 31.6