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Stock-Based Compensation Plans (Tables)
6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Information Regarding Restricted Shares
The following table summarizes information regarding Restricted Shares:
 Six Months Ended June 30, 2023
SharesWeighted Average
Grant-Date Fair
Value
Number of unvested shares:  
Outstanding as of January 1, 20231,697,779 $37.17 
Granted908,866 36.16 
Vested(630,529)37.61 
Forfeited(198,545)44.22 
Outstanding as of June 30, 20231,777,571 $35.71