EMPLOYEE STOCK BENEFIT PLANS (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Stock Options
EMPLOYEE STOCK BENEFIT PLANS
Shares Granted	0.4
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 20.64
Unrecognized Compensation Expense	$ 14.1
Expected Weighted-Average Period to be Recognized (in years)	2 years 0 months 29 days
Performance Share Awards
EMPLOYEE STOCK BENEFIT PLANS
Shares Granted	0.2
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 99.41
Unrecognized Compensation Expense	21.8
Expected Weighted-Average Period to be Recognized (in years)	1 year 7 months 9 days
Restricted stock units
EMPLOYEE STOCK BENEFIT PLANS
Shares Granted	0.2
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 104.21
Unrecognized Compensation Expense	$ 35.6
Expected Weighted-Average Period to be Recognized (in years)	2 years 8 months 15 days