Share-Based Payments (Schedule of Share Option Valuation Assumptions) (Details)	12 Months Ended
	Sep. 30, 2024 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value per share option (in usd per share)	$ 13.48
Share options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	41.00%
Risk-free interest rate	4.67%
Expected share option life (in years)	6 years
Dividend yield	1.75%