BUSINESS SEGMENT INFORMATION - Financial Segment Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Expenses:
Lease operating expenses	[1]	$ 1,397	$ 1,435	$ 1,241
Taxes other than income		192	256	204
Exploration		153	146	127
Depreciation, depletion, and amortization		1,399	1,177	1,360
Asset retirement obligation accretion		116	117	113
Impairments		61	0	208
Total operating expenses		4,374	5,263	5,097
Operating Income (Loss)		3,599	5,620	2,888
Other Income (Expense):
Gain on divestitures, net		8	1,180	67
Losses on previously sold Gulf of Mexico properties		(212)	(157)	(446)
Derivative instrument losses, net		0	(107)	94
Other		26	139	228
General and administrative		(325)	(462)	(357)
Transaction, reorganization, and separation		(15)	(26)	(22)
Financing costs, net		(165)	(313)	(472)
NET INCOME BEFORE INCOME TAXES		2,916	5,874	1,980
Assets		16,944	14,255	14,393
Net Property and Equipment		8,724	7,957	8,060
Additions to Net Property and Equipment		1,911	1,657	1,004
Operating Segments | Egypt
Operating Expenses:
Lease operating expenses		474	526	469
Taxes other than income		0	0	0
Exploration		119	84	63
Depreciation, depletion, and amortization		524	400	524
Asset retirement obligation accretion		0	0	0
Impairments		0		26
Total operating expenses		1,150	1,032	1,094
Operating Income (Loss)		1,879	2,489	991
Other Income (Expense):
Assets		3,503	3,148	2,796
Net Property and Equipment		2,209	1,976	1,720
Additions to Net Property and Equipment		834	695	319
Operating Segments | North Sea
Operating Expenses:
Lease operating expenses		369	404	383
Taxes other than income		0	0	0
Exploration		19	35	34
Depreciation, depletion, and amortization		271	238	270
Asset retirement obligation accretion		76	82	79
Impairments		50		22
Total operating expenses		837	802	827
Operating Income (Loss)		501	756	309
Other Income (Expense):
Assets		1,970	1,911	2,199
Net Property and Equipment		1,628	1,386	1,646
Additions to Net Property and Equipment		131	210	159
Operating Segments | U.S.
Operating Expenses:
Lease operating expenses		554	506	391
Taxes other than income		192	253	190
Exploration		14	24	28
Depreciation, depletion, and amortization		604	537	554
Asset retirement obligation accretion		40	34	30
Impairments		11		0
Total operating expenses		2,386	3,434	3,077
Operating Income (Loss)		1,220	2,368	1,679
Other Income (Expense):
Assets		11,471	9,196	7,700
Net Property and Equipment		4,887	4,595	4,507
Additions to Net Property and Equipment		946	752	523
Reportable Legal Entities | Altus Midstream
Segment Reporting Information [Line Items]
Total revenues		0	21	138
Operating Expenses:
Lease operating expenses		0	0	0
Taxes other than income		0	3	14
Exploration		0	0	0
Depreciation, depletion, and amortization		0	2	12
Asset retirement obligation accretion		0	1	4
Impairments		0		160
Total operating expenses		0	11	227
Operating Income (Loss)		0	10	(89)
Other Income (Expense):
Assets		0	0	1,698
Net Property and Equipment		0	0	187
Additions to Net Property and Equipment		0	0	3
Intersegment Eliminations & Other
Segment Reporting Information [Line Items]
Total revenues		0	(19)	(130)
Operating Expenses:
Lease operating expenses		0	(1)	(2)
Taxes other than income		0	0	0
Exploration		1	3	2
Depreciation, depletion, and amortization		0	0	0
Asset retirement obligation accretion		0	0	0
Impairments		0		0
Total operating expenses		1	(16)	(128)
Operating Income (Loss)		(1)	(3)	(2)
Other Income (Expense):
Assets		0	0	0
Net Property and Equipment		0	0	0
Additions to Net Property and Equipment		0	0	0
Gathering, processing, and transmission costs
Segment Reporting Information [Line Items]
Total revenues	[1]	7,079	9,028	6,498
Operating Expenses:
Cost of goods and services sold	[1]	314	356	264
Gathering, processing, and transmission costs | Operating Segments | Egypt
Segment Reporting Information [Line Items]
Total revenues		3,029	3,521	2,085
Operating Expenses:
Cost of goods and services sold		33	22	12
Gathering, processing, and transmission costs | Operating Segments | North Sea
Segment Reporting Information [Line Items]
Total revenues		1,338	1,558	1,136
Operating Expenses:
Cost of goods and services sold		52	43	39
Gathering, processing, and transmission costs | Operating Segments | U.S.
Segment Reporting Information [Line Items]
Total revenues		2,712	3,952	3,280
Operating Expenses:
Cost of goods and services sold		229	304	309
Gathering, processing, and transmission costs | Reportable Legal Entities | Altus Midstream
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Operating Expenses:
Cost of goods and services sold		0	5	32
Gathering, processing, and transmission costs | Intersegment Eliminations & Other
Segment Reporting Information [Line Items]
Total revenues		0	(3)	(3)
Operating Expenses:
Cost of goods and services sold		0	(18)	(128)
Purchased oil and gas sales
Segment Reporting Information [Line Items]
Total revenues	[1]	894	1,855	1,487
Operating Expenses:
Cost of goods and services sold	[1]	742	1,776	1,580
Purchased oil and gas sales | Operating Segments | Egypt
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Operating Expenses:
Cost of goods and services sold		0	0	0
Purchased oil and gas sales | Operating Segments | North Sea
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Operating Expenses:
Cost of goods and services sold		0	0	0
Purchased oil and gas sales | Operating Segments | U.S.
Segment Reporting Information [Line Items]
Total revenues		894	1,850	1,476
Operating Expenses:
Cost of goods and services sold		742	1,776	1,575
Purchased oil and gas sales | Reportable Legal Entities | Altus Midstream
Segment Reporting Information [Line Items]
Total revenues		0	5	11
Operating Expenses:
Cost of goods and services sold		0	0	5
Purchased oil and gas sales | Intersegment Eliminations & Other
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Operating Expenses:
Cost of goods and services sold		0	0	0
Oil and gas
Segment Reporting Information [Line Items]
Total revenues		7,973	10,883	7,985
Oil and gas | Operating Segments | Egypt
Segment Reporting Information [Line Items]
Total revenues		3,029	3,521	2,085
Oil and gas | Operating Segments | North Sea
Segment Reporting Information [Line Items]
Total revenues		1,338	1,558	1,136
Oil and gas | Operating Segments | U.S.
Segment Reporting Information [Line Items]
Total revenues		3,606	5,802	4,756
Oil and gas | Reportable Legal Entities | Altus Midstream
Segment Reporting Information [Line Items]
Total revenues			16	127
Oil and gas | Intersegment Eliminations & Other
Segment Reporting Information [Line Items]
Total revenues			(16)	(127)
Oil
Other Income (Expense):
Revenue from non-customers		729	989	420
Oil | Gathering, processing, and transmission costs
Segment Reporting Information [Line Items]
Total revenues		5,759	6,700	4,585
Oil | Gathering, processing, and transmission costs | Operating Segments | Egypt
Segment Reporting Information [Line Items]
Total revenues		2,683	3,145	1,806
Oil | Gathering, processing, and transmission costs | Operating Segments | North Sea
Segment Reporting Information [Line Items]
Total revenues		1,073	1,232	929
Oil | Gathering, processing, and transmission costs | Operating Segments | U.S.
Segment Reporting Information [Line Items]
Total revenues		2,003	2,323	1,850
Oil | Gathering, processing, and transmission costs | Reportable Legal Entities | Altus Midstream
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Oil | Gathering, processing, and transmission costs | Intersegment Eliminations & Other
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Natural Gas
Other Income (Expense):
Revenue from non-customers		95	117	47
Natural Gas | Gathering, processing, and transmission costs
Segment Reporting Information [Line Items]
Total revenues		860	1,545	1,207
Natural Gas | Gathering, processing, and transmission costs | Operating Segments | Egypt
Segment Reporting Information [Line Items]
Total revenues		346	370	270
Natural Gas | Gathering, processing, and transmission costs | Operating Segments | North Sea
Segment Reporting Information [Line Items]
Total revenues		237	281	183
Natural Gas | Gathering, processing, and transmission costs | Operating Segments | U.S.
Segment Reporting Information [Line Items]
Total revenues		277	894	754
Natural Gas | Gathering, processing, and transmission costs | Reportable Legal Entities | Altus Midstream
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Natural Gas | Gathering, processing, and transmission costs | Intersegment Eliminations & Other
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Natural Gas Liquids
Other Income (Expense):
Revenue from non-customers		0	2	2
Natural Gas Liquids | Gathering, processing, and transmission costs
Segment Reporting Information [Line Items]
Total revenues		460	783	706
Natural Gas Liquids | Gathering, processing, and transmission costs | Operating Segments | Egypt
Segment Reporting Information [Line Items]
Total revenues		0	6	9
Natural Gas Liquids | Gathering, processing, and transmission costs | Operating Segments | North Sea
Segment Reporting Information [Line Items]
Total revenues		28	45	24
Natural Gas Liquids | Gathering, processing, and transmission costs | Operating Segments | U.S.
Segment Reporting Information [Line Items]
Total revenues		432	735	676
Natural Gas Liquids | Gathering, processing, and transmission costs | Reportable Legal Entities | Altus Midstream
Segment Reporting Information [Line Items]
Total revenues		0	0	0
Natural Gas Liquids | Gathering, processing, and transmission costs | Intersegment Eliminations & Other
Segment Reporting Information [Line Items]
Total revenues		$ 0	$ (3)	$ (3)

[1] (1) For related party transactions associated with Kinetik, refer to Note 7—Equity Method Interest for further detail.