EMPLOYEE STOCK BENEFIT PLANS (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 Y
Stock Options
EMPLOYEE STOCK BENEFIT PLANS
Shares Granted	0.5
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 17.57
Outstanding (in shares)	2.1
Unrecognized Compensation Cost	$ 12.9
Expected Weighted-Average Period to be Recognized (in years)	2.1
Performance Share Awards
EMPLOYEE STOCK BENEFIT PLANS
Shares Granted	0.4
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 66.94
Outstanding (in shares)	0.6
Unrecognized Compensation Cost	22.8
Expected Weighted-Average Period to be Recognized (in years)	1.6
Restricted stock units
EMPLOYEE STOCK BENEFIT PLANS
Shares Granted	0.1
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 76.89
Outstanding (in shares)	0.5
Unrecognized Compensation Cost	$ 21.3
Expected Weighted-Average Period to be Recognized (in years)	2.9