Sales and Other Operating Revenues - Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue from contract	$ 14,506	$ 7,161
Consolidated sales and other operating revenues	17,762	9,826
Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	3,140	2,974
Crude oil
Revenue from contracts outside the scope of ASC Topic 606	219	124
Natural gas
Revenue from contracts outside the scope of ASC Topic 606	2,773	2,727
Other
Revenue from contracts outside the scope of ASC Topic 606	148	123
Financial derivative contracts
Revenue from contracts outside the scope of ASC Topic 606	116	(309)
Lower 48 | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	2,444	2,466
Canada | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	560	303
Europe, Middle East and North Africa | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	$ 136	$ 205