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Stockholders' Equity - RSU and PSU - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
May 17, 2021
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Recorded share-based compensation expense     $ 204,200    
Tax payments, for net share settlement of share based award     $ 10,312 $ 5,767  
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Aggregate intrinsic value price per share (in dollars per share)   $ 176.80 $ 176.80    
Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Aggregate intrinsic value price per share (in dollars per share)   $ 176.80 $ 176.80    
Unrecognized stock-based compensation expense   $ 57,400 $ 57,400    
Weighted average period over which costs are recognized     2 years 1 month 6 days    
Number of shares vested     276    
Number of units outstanding (in shares)   865 865   1,107
Shares withheld, for net share settlement of share based award (in shares)     46    
Tax payments, for net share settlement of share based award     $ 7,500    
Performance Stock Units (PSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Aggregate intrinsic value price per share (in dollars per share)   $ 176.80 $ 176.80    
Unrecognized stock-based compensation expense   $ 44,800 $ 44,800    
Weighted average period over which costs are recognized     2 years 2 months 19 days    
Performance criteria had been met (in shares)     2,200    
Number of shares vested     1,696    
Number of units outstanding (in shares)   4,087 4,087   5,618
Shares withheld, for net share settlement of share based award (in shares)     19    
Tax payments, for net share settlement of share based award     $ 2,800    
eXponential Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of vesting 4.00%        
Modification, number of shares vested 36        
Modification, stock-based compensation expense   $ 500 $ 900    
Minimum | eXponential Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Minimum holding period     2 years 6 months