INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Gross unrecognized income tax benefits	$ 17.8	$ 17.8	$ 24.2
Accrued interest and penalties related to unrecognized income tax benefits	10.1	10.1	$ 12.7
Valuation allowance provided for deferred tax assets	15.1	15.1
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 3.6	$ 13.4