INCOME TAXES, Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Current:
Federal	$ 215	$ 286	$ 258
State and local	49	63	65
Foreign	9	15	14
Current provision (benefit) for income taxes	273	364	337
Deferred:
Federal	(36)	(22)	121
State and local	(3)	(1)	(4)
Deferred provision (benefit) for income taxes	(39)	(23)	117
Provision (benefit) for income taxes	$ 234	$ 341	$ 454