v3.26.1
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, 2026
Jun. 30, 2025
Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Amount of gain (loss) excluded from effectiveness testing, which was recognized in earnings $ 242 $ 226 $ 229
Gain/(loss) recognized in AOCI 395 (1,100)  
Foreign currency contracts      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Amount of Gain/(Loss) Recognized in OCI on Derivatives $ 264 $ (1,040)