Income Taxes - Income Tax Expense by Fiscal Year (Detail) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Current:
U.S. federal	$ 2,166	$ 1,943	$ 1,662
State and local	104	69	212
Non-U.S.	1,245	869	743
Total current taxes	3,515	2,881	2,617
Deferred:
U.S. federal	(231)	(57)	42
State and local	(77)	(28)	9
Non-U.S.	(28)	956	256
Total deferred taxes	(336)	871	307
Total income tax provision	$ 3,179	$ 3,752	$ 2,924

Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction.

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