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Segment Disclosures and Related Information - Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	$ 12,351	$ 21,161	$ 27,162	$ 38,923
Lower 48
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	8,389	14,458	18,438	26,015
Canada
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	850	1,794	2,033	3,314
Intersegment eliminations | Lower 48
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	(1)	(6)	(5)	(13)
Intersegment eliminations | Canada
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	(401)	(726)	(741)	(1,377)
Operating Segments
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	12,351	21,161	27,162	38,923
Operating Segments | Alaska
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,709	2,349	3,444	4,267
Operating Segments | Lower 48
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	8,388	14,452	18,433	26,002
Operating Segments | Canada
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	449	1,068	1,292	1,937
Operating Segments | Europe, Middle East and North Africa
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,369	2,652	3,071	5,241
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	432	638	896	1,388
Operating Segments | Other International
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	0
Corporate and Other
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	4	2	26	88
United States
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	10,040	16,802	21,842	30,355
Canada
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	449	1,069	1,292	1,938
China
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	244	301	446	574
Indonesia
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	159
Libya
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	447	351	817	782
Malaysia
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	189	336	450	654
Norway
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	577	737	1,228	1,669
United Kingdom
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	404	1,564	1,085	2,790
Other foreign countries
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1	1	2	2
Natural gas
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,860	7,267	6,272	13,265
Natural gas liquids
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	582	1,042	1,277	1,921
Crude oil
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	8,965	11,494	17,867	21,364
Other
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	$ 944	$ 1,358	$ 1,746	$ 2,373

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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