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Stockholders' Equity - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized estimated compensation costs $ 240.9
Restricted stock units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total vest date fair value 183.2
Performance stock units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total vest date fair value $ 29.5