EMPLOYEE STOCK BENEFIT PLANS (Details 2) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) $ / shares shares
EMPLOYEE STOCK BENEFIT PLANS
Unrecognized Compensation Expense	$ 55.1
Stock options
EMPLOYEE STOCK BENEFIT PLANS
Shares granted | shares	1.1
Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 13.88
Unrecognized Compensation Expense	$ 13.2
Expected Weighted-Average Period to be Recognized (years)	1 year 9 months 18 days
Performance share awards
EMPLOYEE STOCK BENEFIT PLANS
Shares granted | shares	0.2
Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 70.49
Unrecognized Compensation Expense	$ 5.1
Expected Weighted-Average Period to be Recognized (years)	1 year 3 months 18 days
Restricted stock units
EMPLOYEE STOCK BENEFIT PLANS
Shares granted | shares	0.4
Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 74.50
Unrecognized Compensation Expense	$ 36.8
Expected Weighted-Average Period to be Recognized (years)	2 years 6 months