RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - SCHEDULE OF DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2022
Derivative [Line Items]
Derivative, Notional Amount	$ 19,728	$ 18,540
Derivative Asset	881	570
Derivative Liability	(540)	(369)
Derivatives in Fair Value Hedging Relationships | Interest Rate Contracts
Derivative [Line Items]
Derivative, Notional Amount	3,743	4,972
Derivative Asset	0	3
Derivative Liability	(435)	(307)
Derivatives in Net Investment Hedging Relationships | Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount	11,877	7,943
Derivative Asset	877	561
Derivative Liability	(9)	(1)
Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Notional Amount	15,620	12,915
Derivative Asset	877	564
Derivative Liability	(444)	(308)
Not Designated as Hedging Instrument | Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount	4,108	5,625
Derivative Asset	4	6
Derivative Liability	$ (96)	$ (61)