LEASES (Maturity) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019
Operating leases
Remainder of 2019	$ 112
2020	135
2021	100
2022	75
2023	58
Thereafter	113
Total lease payments	593
Less: Interest	55
Present value of lease liabilities	538	$ 550
Finance leases
Remainder of 2019	5
2020	6
2021	5
2022	5
2023	3
Thereafter	34
Total lease payments	58
Less: Interest	23
Present value of lease liabilities	35
Total
Remainder of 2019	117
2020	141
2021	105
2022	80
2023	61
Thereafter	147
Total lease payments	651
Less: Interest	78
Present value of lease liabilities	$ 573