DEBT - Components of Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Debt Disclosure [Abstract]
Interest Expense	$ 29.8	$ 16.8	$ 88.3	$ 49.7
Investment Income, Interest	(3.5)	(2.0)	(9.4)	(7.2)
Interest (Income) Expense, Net	$ 26.3	$ 14.8	$ 78.9	$ 42.5