Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Schedule of Unrecognized Tax Benefits Rollforward) (Details)

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INCOME TAXES (Schedule of Unrecognized Tax Benefits Rollforward) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits $ 33.5 $ 30.7 $ 156.2 $ 72.6
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions (2.8)      
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions   (61.0) (6.7)  
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions 4.5 0.2 78.5  
Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation 0.0 0.0 0.0  
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities 1.0 64.7 1.1  
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 0.0 0.0 (0.5)  
Other Increases decreases to unrecognized tax benefits $ 0.1 $ 0.0 $ 0.0