LEASES - Maturities of Lease Liabilities Operating and Financing (Details) $ in Millions	Jun. 30, 2019 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	$ 74
2020	126
2021	94
2022	63
2023	43
Thereafter	87
Total lease payments	487
Less imputed interest	55
Operating Lease Liabilities	432
Finance Lease, Liability, Payment, Due [Abstract]
2019	3
2020	6
2021	5
2022	3
2023	3
Thereafter	1
Total lease payments	21
Less imputed interest	3
Total finance lease liabilities	$ 18