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Stock-Based Compensation and Employee Benefit Plans - Restricted Stock Units (Additional Information) (Details) - Restricted Stock - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Allocated share-based compensation expense $ 13.2 $ 51.0
Unrecognized stock-based compensation cost $ 37.6 $ 145.5
Cost not yet recognized, period for recognition 1 year 3 months 18 days 1 year 3 months 7 days