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Stock-Based Compensation Plans (Tables)
9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Information Regarding Restricted Shares
The following table summarizes information regarding Restricted Shares:
 Nine Months Ended September 30, 2023
SharesWeighted Average
Grant-Date Fair
Value
Number of unvested shares:  
Outstanding as of January 1, 20231,697,779 $37.17 
Granted918,610 36.67 
Vested(633,982)37.57 
Forfeited(222,232)43.23 
Outstanding as of September 30, 20231,760,175 $36.00