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Stock-Based Compensation and Other Employee Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Activity, Restricted Shares
Activity, restricted shares: (a)
Restricted
Shares		Per Share Weighted Average Grant Date Fair Value
Non-vested restricted shares, as of December 31, 20201,845,341 $34.90 
Granted160,221 93.58 
Vested(118,263)52.58 
Canceled/forfeited(26,000)31.72 
Non-vested restricted shares, as of September 30, 20211,861,299 $38.88 
(a)    Includes 2,500 and 2,300 restricted stock units as of September 30, 2021 and December 31, 2020, respectively.