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Compensation and Benefits (Details) - Unvested restricted share-based awards - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Forfeited (in dollars per share) $ 29.99 $ 30.92 $ 34.61
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 76.5    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 3 years 3 months 18 days