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INCOME TAXES (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
INCOME TAXES      
Unrecognized tax benefits, excluding interest $ 36.5   $ 36.5
Effective tax rate (as a percent) 31.20% (2.20%)