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Share-Based Payments (Tables)
 3 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Restricted Stock Activity
The transactions for restricted share units for the three months ended December 31, 2023 were as follows:
Restricted Share UnitsWeighted-
average
Grant-date
Fair Value
Non-vested at September 30, 20231,728,697 $30.90 
Granted458,320 40.39 
Vested(446,475)30.06 
Expired or forfeited(2,900)34.83 
Non-vested at December 31, 20231,737,642 $33.61 
Schedule of Assumptions Used in Estimating Fair Value The following table indicates the assumptions used in estimating the fair value of certain stock-based awards granted during the three-month period ended December 31, 2023.
Three Months Ended
December 31, 2023
Expected volatility31.8 %
Dividend yield2.4 %
Average risk-free interest rate4.7 %
Average expected term (years)3.0