LEASES Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease, right-of-use asset		$ 399	$ 459
Finance lease, right-of-use asset	[1]	91	95
Lease asset, total		490	554
Operating lease, liability, current		141	148
Finance lease, liability, current		13	13
Operating lease, liability, noncurrent		263	315
Finance lease, liability, noncurrent		78	82
Lease liability, total		$ 495	$ 558

[1] Finance leases are recorded net of accumulated amortization of $59 million and $53 million as of June 30, 2021 and December 31, 2020, respectively.