LEASES, Operating Lease Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Location of ROU assets	Other assets	Other assets
ROU assets (included in Other assets)	$ 519	$ 480
Location of lease liabilities	Other Liabilities	Other Liabilities
Lease liabilities (included in Other payables)	$ 521	$ 482