INCOME TAXES - Net Deferred Tax Liability (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
U.S. and state net operating losses	$ 2,497	$ 2,306
Capital losses	647	633
Foreign net operating losses	4	0
Tax credits and other tax incentives	24	33
Foreign tax credits	2,241	2,241
Accrued expenses and liabilities	152	93
Asset retirement obligation	712	654
Property and equipment	12	261
Investment in Altus Midstream LP	64	76
Net interest expense limitation	146	252
Lease liability	81	79
Current decommissioning contingency for sold Gulf of Mexico properties	263	0
Other	1	1
Total deferred tax assets	6,844	6,629
Valuation allowance	(5,902)	(5,991)	$ (4,959)	$ (3,947)
Net deferred tax assets	942	638
Deferred tax liabilities:
Equity investments	2	4
Property and equipment	748	750
Right-of-use asset	77	74
Decommissioning security for sold Gulf of Mexico properties	164	0
Other	86	13
Total deferred tax liabilities	1,077	841
Net deferred income tax liability	$ 135	$ 203