Short-Term Borrowings And Lines Of Credit - Schedule Of Short-Term Debt And Current Maturities Of Long-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Debt Disclosure [Abstract]
Current maturities of long-term debt	$ 546	$ 516
Commercial paper	1	1,599
Total	$ 547	$ 2,115
Interest rate for weighted-average short-term borrowings at year end	0.40%	2.80%