LEASES Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease, right-of-use asset		$ 422	$ 434
Finance lease, right-of-use asset	[1]	100	103
Leased assets, total		522	537
Operating lease, liability, current		132	134
Finance lease, liability, current		12	12
Operating lease, liability, noncurrent		293	304
Finance lease, liability, noncurrent		85	88
Lease liability, total		$ 522	$ 538

[1] Finance leases are recorded net of accumulated amortization of $43 million and $40 million as of March 31, 2020 and December 31, 2019.