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LEASES - ADDITIONAL INFORMATION (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Leases [Abstract]      
Operating Lease, Cost $ 347 $ 341 $ 340
Operating Lease, Payments 271    
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 126