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DERIVATIVE FINANCIAL INSTRUMENTS - Gains and Losses Related to Instruments Not Designated as Hedging Instruments (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Foreign currency forward contracts | Derivatives Not Designated as Hedging Instruments | Selling, general and administrative expenses    
Derivative instruments    
Amount of Gain (Loss) Recognized in Earnings on Derivatives $ (17) $ 56