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INCOME TAXES (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Effective income tax rate 10.20% 21.60%  
Adjustment to tax form related restructuring expense $ 24.0    
Tax benefit from employee share-based compensation 19.0 $ 14.2  
Liability for income taxes associated with uncertain tax positions 161.9   $ 150.7
Decrease in unrecognized tax benefits is reasonably possible 47.4   42.7
Net amounts that would favorably affect effective tax rate $ 114.5   $ 108.0