XML 70 R58.htm IDEA: XBRL DOCUMENT v3.5.0.2
STOCK-BASED COMPENSATION - Fair Value Assumptions (Details) - Stock options - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Weighted-average assumptions used to estimate the fair value of options granted            
Dividend yield (as a percent) 0.00%   0.00% 0.00% 0.00%  
Expected volatility (as a percent) 36.20%   37.00% 36.20% 37.10%  
Risk-free interest rate (as a percent) 1.30%   1.50% 1.40% 1.60%  
Expected term 6 years 4 months 24 days   5 years 9 months 18 days 6 years 3 months 18 days 5 years 9 months 18 days  
Stock Options, Number of Shares            
Balance at the beginning of the period (in shares)   6,590   6,590    
Granted (in shares) 219 961        
Exercised (in shares)       (210)    
Cancelled or forfeited (in shares)       (81)    
Balance at the end of the period (in shares) 7,479     7,479   6,590
Vested and expected to vest in the future at the end of the period (in shares) 7,031     7,031    
Exercisable at the end of the period (in shares) 4,350     4,350    
Stock options, Weighted-Average Exercise Price Per Share            
Balance at the beginning of the period (in dollars per share)   $ 50.85   $ 50.85    
Granted (in dollars per share) $ 138.53 $ 132.06        
Exercised (in dollars per share)       38.89    
Cancelled or forfeited (in dollars per share)       94.97    
Balance at the end of the period (in dollars per share) 63.72     63.72   $ 50.85
Vested and expected to vest in the future at the end of the period (in dollars per share) 60.23     60.23    
Exercisable at the end of the period (in dollars per share) $ 31.24     $ 31.24    
Weighted-Average Remaining Contractual Term            
Balance at the beginning of the period       5 years 9 months 18 days   5 years 7 months 6 days
Balance at the end of the period       5 years 9 months 18 days   5 years 7 months 6 days
Vested and expected to vest in the future at the end of the period       5 years 7 months 6 days    
Exercisable at the end of the period       3 years 10 months 24 days    
Aggregate Intrinsic Value            
Balance at the beginning of the period   $ 646,497   $ 646,497    
Balance at the end of the period $ 725,436     725,436   $ 646,497
Vested and expected to vest in the future at the end of the period 706,495     706,495    
Exercisable at the end of the period $ 563,212     $ 563,212