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Segment Disclosures and Related Information - Schedule of Operating Segment Reporting by Geographic Location (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	$ 15,031	$ 13,041	$ 45,552	$ 40,509
U.S.
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	11,887	10,445	36,136	32,201
Canada
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	798	660	2,487	2,537
China
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	228	261	683	749
Equatorial Guinea
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	21	0	377	0
Libya
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	434	307	1,350	1,277
Malaysia
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	201	217	604	746
Norway
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	460	640	1,494	1,778
Singapore
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	327	0	508	0
U.K.
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	673	510	1,909	1,217
Other foreign countries
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	2	1	4	4
Natural gas
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	2,020	1,290	6,782	4,346
Natural gas liquids
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	886	693	2,879	2,035
Crude oil
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	10,010	9,806	30,371	29,480
Other
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	$ 2,115	$ 1,252	$ 5,520	$ 4,648

X

- Definition

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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