SUPPLEMENTAL OIL AND GAS DISCLOSURES (Unaudited) - Revenue and Direct Cost Information Relating to Company's Oil and Gas Exploration and Production Activities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Asset retirement obligation accretion	$ 113	$ 109	$ 107
Lease operating expenses	1,241	1,127	1,447
Oil and Gas, Exploration and Production
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Oil and gas production revenues	6,501	4,037	6,315
Depreciation, depletion, and amortization	1,255	1,643	2,512
Asset retirement obligation accretion	109	105	105
Lease operating expenses	1,243	1,129	1,449
Gathering, processing, and transmission	360	379	384
Exploration expenses	127	274	805
Impairments related to oil and gas properties		4,319	1,633
Production taxes	188	106	191
Income tax	996	(823)	175
Operating costs	4,278	7,132	7,254
Results of operations	2,223	(3,095)	(939)
United States | Oil and Gas, Exploration and Production
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Oil and gas production revenues	3,280	1,764	2,763
Depreciation, depletion, and amortization	511	726	1,508
Asset retirement obligation accretion	30	32	29
Lease operating expenses	391	400	645
Gathering, processing, and transmission	309	291	299
Exploration expenses	28	168	688
Impairments related to oil and gas properties		3,938	1,633
Production taxes	188	106	191
Income tax	383	(818)	(468)
Operating costs	1,840	4,843	4,525
Results of operations	1,440	(3,079)	(1,762)
Egypt | Oil and Gas, Exploration and Production
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Oil and gas production revenues	2,085	1,390	2,276
Depreciation, depletion, and amortization	477	540	641
Asset retirement obligation accretion	0	0	0
Lease operating expenses	469	424	484
Gathering, processing, and transmission	12	38	40
Exploration expenses	63	63	100
Impairments related to oil and gas properties		374	0
Production taxes	0	0	0
Income tax	479	(22)	455
Operating costs	1,500	1,417	1,720
Results of operations	585	(27)	556
North Sea | Oil and Gas, Exploration and Production
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Oil and gas production revenues	1,136	883	1,276
Depreciation, depletion, and amortization	267	377	363
Asset retirement obligation accretion	79	73	76
Lease operating expenses	383	305	320
Gathering, processing, and transmission	39	50	45
Exploration expenses	34	28	2
Impairments related to oil and gas properties		7	0
Production taxes	0	0	0
Income tax	134	17	188
Operating costs	936	857	994
Results of operations	200	26	282
Other International | Oil and Gas, Exploration and Production
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Oil and gas production revenues	0	0	0
Depreciation, depletion, and amortization	0	0	0
Asset retirement obligation accretion	0	0	0
Lease operating expenses	0	0	0
Gathering, processing, and transmission	0	0	0
Exploration expenses	2	15	15
Impairments related to oil and gas properties		0	0
Production taxes	0	0	0
Income tax	0	0	0
Operating costs	2	15	15
Results of operations	$ (2)	$ (15)	$ (15)