LEASES - FUTURE MATURITIES (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months		$ 263
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 263
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two	177
Lessee, Operating Lease, Liability, Payments, Due Year Three	158
Lessee, Operating Lease, Liability, Payments, Due Year Four	134
Lessee, Operating Lease, Liability, Payments, Due Year Five	114
Lessee, Operating Lease, Liability, Payments, Due after Year Five	218
Lessee, Operating Lease, Liability, Payments, Due	1,064
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(171)
Operating Lease, Liability	$ 893
Operating Leases, Future Minimum Payments, Due in Two Years		209
Operating Leases, Future Minimum Payments, Due in Three Years		165
Operating Leases, Future Minimum Payments, Due in Four Years		141
Operating Leases, Future Minimum Payments, Due in Five Years		121
Operating Leases, Future Minimum Payments, Due Thereafter		244
Operating Leases, Future Minimum Payments Due		$ 1,143