Supplier Financing Programs - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2025	Sep. 30, 2024
Supplier Finance Program [Line Items]
Outstanding payment obligations to financial institutions related to supplier financing programs	$ 13	$ 16
Supplier Finance Program, Obligation, Current, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities, Current	Accounts Payable and Accrued Liabilities, Current