Annual report pursuant to Section 13 and 15(d)

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

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INCOME TAXES (Schedule of Unrecognized Tax Benefits) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits $ 29.2 $ 29.0 $ 33.5 $ 30.7
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions 0.2 0.1    
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions     (2.8)  
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions 0.0 3.6 4.5  
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities 0.0      
Unrecognized Tax Benefits, Increase Resulting from Settlements with Taxing Authorities   0.0 1.0  
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 0.0 (8.2) 0.0  
Other Increases decreases to unrecognized tax benefits $ 0.0 $ 0.0 $ 0.1