INCOME TAXES - Schedule of Pretax Earnings from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
United States	$ 1,118	$ 712	$ 1,529
Non-U.S.	1,816	1,308	1,374
Earnings from continuing operations before income taxes	$ 2,934	$ 2,020	$ 2,903