RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - Gains And Losses On Derivatives In Net Investment Hedges Recognized in OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) excluded from effectiveness testing, which was recognized in earnings	$ 229	$ 238
Gain/(loss) recognized in AOCI	255	(315)
Foreign currency contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain/(Loss) Recognized in OCI on Derivatives	$ 163	$ (544)