INCOME TAXES - GROSS UNCERTAIN TAX POSITIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Balance, beginning of the period	$ 89.2	$ 75.7	$ 47.5
Additions for current year tax positions	13.0	16.1	38.1
Additions for tax positions of prior years	3.5	0.8	1.6
Settlements with taxing authorities	(26.2)	(2.7)
Impact of Spin-off			(11.2)
Currency fluctuations	(0.6)	(0.7)	(0.3)
Balance, end of the period	$ 78.9	$ 89.2	$ 75.7