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STOCK-BASED COMPENSATION (Details 2) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Option Awards
       
Employee and Director Stock Plans        
Options granted (in shares)     1,100,000  
Weighted-average exercise price of options granted (in dollars per share)     $ 86.70  
Weighted-average assumptions for options and ESPP subscriptions granted        
Risk-free interest rate (as a percent) 0.60% 1.40% 0.70% 1.70%
Expected volatility (as a percent) 31.20% 27.20% 31.30% 27.30%
Expected term 4 years 10 months 24 days 4 years 8 months 12 days 4 years 7 months 6 days 4 years 6 months
Fair value (in dollars per share) $ 29.00 $ 21.72 $ 23.92 $ 22.81
ESPP
       
Weighted-average assumptions for options and ESPP subscriptions granted        
Risk-free interest rate (as a percent) 0.20% 0.10% 0.10% 0.20%
Expected volatility (as a percent) 36.00% 29.80% 33.20% 27.60%
Expected term 7 months 6 days 7 months 6 days 7 months 6 days 7 months 6 days
Fair value (in dollars per share) $ 26.90 $ 21.06 $ 21.30 $ 20.02
Restricted stock units
       
Employee and Director Stock Plans        
Restricted stock units granted (in shares)     200,000  
Weighted-average assumptions for options and ESPP subscriptions granted        
Fair value (in dollars per share)     $ 86.04  
MRSUs
       
Employee and Director Stock Plans        
Restricted stock units granted (in shares)     47,275  
Performance period     3 years  
Weighted-average assumptions for options and ESPP subscriptions granted        
Risk-free interest rate (as a percent)     0.30%  
Expected volatility (as a percent)     30.40%  
Fair value (in dollars per share)     $ 109.78  
MRSUs | Minimum
       
Employee and Director Stock Plans        
Percentage of targeted number of shares granted     0.00%  
MRSUs | Maximum
       
Employee and Director Stock Plans        
Percentage of targeted number of shares granted     175.00%