XML 99 R85.htm IDEA: XBRL DOCUMENT v3.20.4
EQUITY COMPENSATION PLANS AND STOCK-BASED COMPENSATION - Summary of Restricted Stock Unit Activity (Detail) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Restricted Stock With Service Based Vesting Conditions      
Shares      
Shares, Non-vested units beginning balance (in shares) 3,585,384    
Shares, Granted (in shares) 2,190,380    
Shares, Vested (in shares) (1,308,962)    
Shares, Forfeited (in shares) (293,678)    
Shares, Non-vested units ending balance (in shares) 4,173,124 3,585,384  
Weighted Average Grant Date Fair Value      
Weighted Average Grant Date Fair Value, Non-vested units beginning balance (in dollars per share) $ 88.54    
Weighted Average Grant Date Fair Value, Granted (in dollars per share) 77.13 $ 91.28 $ 84.63
Weighted Average Grant Date Fair Value, Vested (in dollars per share) 87.57    
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share) 85.17    
Weighted Average Grant Date Fair Value, Non-vested units ending balance (in dollars per share) $ 83.41 $ 88.54  
Restricted Stock Unit Awards with Performance-Based Vesting Conditions      
Shares      
Shares, Non-vested units beginning balance (in shares) 226,884    
Shares, Granted (in shares) 2,272    
Shares, Vested (in shares) (126,608)    
Shares, Forfeited (in shares) (3,197)    
Shares, Non-vested units ending balance (in shares) 99,351 226,884  
Weighted Average Grant Date Fair Value      
Weighted Average Grant Date Fair Value, Non-vested units beginning balance (in dollars per share) $ 89.09    
Weighted Average Grant Date Fair Value, Granted (in dollars per share) 73.82 $ 94.53 $ 83.57
Weighted Average Grant Date Fair Value, Vested (in dollars per share) 88.09    
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share) 94.53    
Weighted Average Grant Date Fair Value, Non-vested units ending balance (in dollars per share) $ 90.31 $ 89.09  
Restricted Stock Unit Awards with non-Revenue based Performance Conditions      
Shares      
Shares, Non-vested units beginning balance (in shares) 44,260    
Shares, Granted (in shares) 184,460    
Shares, Vested (in shares) (4,495)    
Shares, Forfeited (in shares) (3,560)    
Shares, Non-vested units ending balance (in shares) 220,665 44,260  
Weighted Average Grant Date Fair Value      
Weighted Average Grant Date Fair Value, Non-vested units beginning balance (in dollars per share) $ 81.00    
Weighted Average Grant Date Fair Value, Granted (in dollars per share) 84.17 $ 81.00  
Weighted Average Grant Date Fair Value, Vested (in dollars per share) 73.82    
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share) 78.72    
Weighted Average Grant Date Fair Value, Non-vested units ending balance (in dollars per share) $ 83.83 $ 81.00  
Restricted Stock Unit Awards with Market Conditions      
Shares      
Shares, Non-vested units beginning balance (in shares) 99,010    
Shares, Granted (in shares) 131,350    
Shares, Vested (in shares) 0    
Shares, Forfeited (in shares) (9,370)    
Shares, Non-vested units ending balance (in shares) 220,990 99,010  
Weighted Average Grant Date Fair Value      
Weighted Average Grant Date Fair Value, Non-vested units beginning balance (in dollars per share) $ 143.92    
Weighted Average Grant Date Fair Value, Granted (in dollars per share) 115.85    
Weighted Average Grant Date Fair Value, Vested (in dollars per share) 0    
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share) 143.92    
Weighted Average Grant Date Fair Value, Non-vested units ending balance (in dollars per share) $ 127.23 $ 143.92