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Stock-Based Compensation and Employee Benefit Plan - Restricted Stock Units (Additional Information) (Details) - Restricted Stock - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated share-based compensation expense $ 44.1 $ 141.3 $ 142.4
Unrecognized stock-based compensation cost $ 59.8 $ 52.0  
Expense expected to be recognized over a weighted-average period 2 years 2 months 12 days 1 year 1 month 6 days