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Stock-Based Compensation (Tables)
6 Months Ended
Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Payment Arrangement, Activity [Table Text Block]
A summary of the stock-based awards granted is presented below:
 Six Months Ended March 31,
 20222021
Number GrantedWeighted Average Grant Date Fair ValueNumber GrantedWeighted Average Grant Date Fair Value
Stock options548,398 $18.59 932,678 $9.36 
Stock appreciation rights19,768 18.59 35,254 9.36 
Restricted stock/units1,267,490 78.50 1,697,257 46.20 
Performance shares482,030 82.88 410,934 50.53 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 Six Months Ended
March 31,
 20222021
Expected life of option (years)6.06.5
Risk-free interest rate1.35%0.6%
Expected volatility of the Company’s stock27.8%27.6%
Expected dividend yield on the Company’s stock1.71%2.28%
Schedule of share-based payment award, performance share, valuation assumptions [Table Text Block]
 Six Months Ended
March 31,
20222021
Risk-free interest rate0.99%0.20%
Expected volatility of the Company’s stock30.0%30.9%