Stock-based Compensation - Fair Value Calculation of MRSU (Details) - Market Based Restricted Stock Units	6 Months Ended
	Mar. 31, 2025 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility of stock price	33.14%
Risk-free interest rate	4.26%
Expected term of awards (years)	2 years 9 months 7 days
Dividend yield	0.76%
Grant date stock price (in dollars per share)	$ 26.15