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STOCK-BASED COMPENSATION (Detail 3) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Mar. 31, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Stock options          
Stock-based compensation          
Weighted-average grant-date fair value of options granted (in dollars per share) $ 49.72   $ 25.71 $ 50.14 $ 29.35
Stock units and stock awards expected to vest (in shares) 6,446,000     6,446,000  
Total intrinsic value of options exercised $ 314.0   $ 3.7 $ 829.7 $ 15.1
Cash received from option exercises 22.7   $ 2.0 41.7 $ 7.7
Total unrecognized compensation expense related to non-vested shares granted to employees $ 81.6     $ 81.6  
Cost expected to be recognized over a weighted-average period       3 years 1 month 6 days  
Restricted stock units          
Stock-based compensation          
Stock units and stock awards expected to vest (in shares) 200,000     200,000  
Total unrecognized compensation expense related to non-vested shares granted to employees $ 14.4     $ 14.4  
Cost expected to be recognized over a weighted-average period       2 years 2 months 12 days  
Number of Shares          
Non-vested at the beginning of the period (in shares)   149,000   149,000  
Granted (in shares)   83,000   0  
Vested (in shares)       (21,000)  
Forfeited/cancelled (in shares)       (11,000)  
Non-vested at the end of the period (in shares) 200,000     200,000  
Weighted Average Grant-Date Fair Value          
Non-vested at the beginning of the period (in dollars per share)   $ 61.09   $ 61.09  
Granted (in dollars per share)   $ 135.48 $ 69.00 135.48 $ 69.00
Vested (in dollars per share)       59.10  
Forfeited/cancelled (in dollars per share)       61.66  
Non-vested at the end of the period (in dollars per share) $ 91.94     $ 91.94