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Share-Based Payments - Narrative (Details)
9 Months Ended
Sep. 30, 2021
USD ($)
incentiveProgram
Sep. 30, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of incentive programs | incentiveProgram 3  
Proceeds from exercise of stock options $ 5,500,000 $ 0
Stock options, RSUs, and performance shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total unrecognized compensation expense related to unvested share-based payments $ 105,800,000  
Weighted-average period for unrecognized compensation expense expected to be recognized 2 years 3 months 18 days  
Stock options, RSUs, and performance shares | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
General vesting period 3 years  
Stock options | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Period of stock option expiration from date of grant 10 years