RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - SCHEDULE OF DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Millions	Dec. 31, 2022	Jun. 30, 2022
Derivative [Line Items]
Derivative, Notional Amount	$ 20,567	$ 18,540
Derivative Asset	94	570
Derivative Liability	(962)	(369)
Derivatives in Fair Value Hedging Relationships | Interest Rate Contracts
Derivative [Line Items]
Derivative, Notional Amount	3,983	4,972
Derivative Asset	0	3
Derivative Liability	(484)	(307)
Derivatives in Net Investment Hedging Relationships | Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount	11,381	7,943
Derivative Asset	47	561
Derivative Liability	(474)	(1)
Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Notional Amount	15,364	12,915
Derivative Asset	47	564
Derivative Liability	(958)	(308)
Not Designated as Hedging Instrument | Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount	5,203	5,625
Derivative Asset	47	6
Derivative Liability	$ (4)	$ (61)