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Stock-Based Compensation - Schedule of Grants and Weighted-Average Grant-Date Fair Values (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Stock options    
Granted    
Stock options (in shares) 0 43,770
Weighted-Average Grant-Date Fair Value    
Stock options (in dollars per shares) $ 0 $ 52.05
RSUs    
Granted    
Other than stock options (in shares) 10,230 177,770
Weighted-Average Grant-Date Fair Value    
Other than stock options (in dollars per share) $ 211.90 $ 210.13
PSUs    
Granted    
Other than stock options (in shares) 0 78,720
Weighted-Average Grant-Date Fair Value    
Other than stock options (in dollars per share) $ 0 $ 212.67