INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Change in tax rate effect on deferred tax asset expense (benefit)							$ (3.3)
Provisional transition tax							327.4
Foreign tax credits provisional expense (benefit)							(32.3)
Reduction in transition tax		$ 4.5	$ 8.3
Increase in deferred tax asset		3.7
Adjustment to tax form related restructuring expense	$ 4.6	$ 9.1			$ 13.7
Effective income tax rate	9.20%			19.70%	6.30%	17.50%
Transition tax					$ 16.4
Tax settlement					36.1
Liability for income taxes associated with uncertain tax positions	$ 152.5				152.5		225.6
Decrease in unrecognized tax benefits is reasonably possible	65.9				65.9		94.0
Net amounts that would favorably affect effective tax rate	$ 86.6				$ 86.6		$ 131.6