SHARE-BASED AND OTHER COMPENSATION, RSU Activity (Details) - Restricted Stock Units - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per unit award	$ 115.79	$ 98.52	$ 63.86
Total grant date fair value of RSUs vested	$ 111	$ 115	$ 87