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Share-Based Compensation (Summary of Stock Option Activity) (Details) - $ / shares
shares in Thousands
12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Shares    
Outstanding, beginning (shares) 294  
Exercised (shares) (240)  
Outstanding, ending (shares) 54  
Exercisable (shares) 54 294
Weighted Average Exercise Price    
Outstanding, beginning (in dollars per share) $ 120.42  
Exercised (in dollars per share) 117.30  
Outstanding, ending (in dollars per share) 134.54  
Exercisable (in dollars per share) $ 134.54 $ 120.42