Sales and Other Operating Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from contracts with customers	$ 48,522	$ 61,049	$ 34,590
Total Revenues and Other Income	56,141	78,494	45,828
Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	8,203	17,150	11,500
Financial derivative contracts
Revenue from contracts outside the scope of ASC Topic 606	(584)	295	(262)
Crude oil
Revenue from contracts outside the scope of ASC Topic 606	143	495	757
Natural gas
Revenue from contracts outside the scope of ASC Topic 606	6,622	15,368	10,034
Other
Revenue from contracts outside the scope of ASC Topic 606	1,438	1,287	709
Lower 48 | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	6,607	13,919	9,050
Canada | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	1,248	2,717	1,457
Europe, Middle East and North Africa
Total Revenues and Other Income	5,854	11,271	5,902
Europe, Middle East and North Africa | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	$ 348	$ 514	$ 993