SHARE-BASED AND OTHER COMPENSATION, Expense and Income Tax Benefits Related to RSUs (Details) - Employees and Directors - Restricted Stock Units - 2012 Stock Incentive Plan - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU share-based compensation amortization	$ 245	$ 242	$ 220
Income tax benefits related to share-based compensation expense	$ 57	$ 41	$ 51