INCOME TAXES - Schedule of Principal Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Current:
U.S. federal	$ 463	$ 325	$ 463
State and local	56	34	47
Non-U.S.	481	452	369
Deferred:
U.S. federal	(212)	(284)	(159)
State and local	11	(18)	(17)
Non-U.S.	(103)	(94)	(61)
Income tax expense	$ 696	$ 415	$ 642