Sales and Other Operating Revenues - Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue from contract	$ 16,728	$ 7,753	$ 31,234	$ 14,914
Consolidated sales and other operating revenues	21,161	9,556	38,923	19,382
Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	4,411	1,754	7,551	4,728
Crude oil
Revenue from contracts outside the scope of ASC Topic 606	64	178	283	302
Natural gas
Revenue from contracts outside the scope of ASC Topic 606	4,254	1,504	7,027	4,231
Other
Revenue from contracts outside the scope of ASC Topic 606	93	72	241	195
Financial derivative contracts
Revenue from contracts outside the scope of ASC Topic 606	22	49	138	(260)
Lower 48 | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	3,483	1,345	5,927	3,811
Canada | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	807	207	1,367	510
Europe, Middle East and North Africa | Physical contracts meeting the definition of a derivative
Revenue from contracts outside the scope of ASC Topic 606	$ 121	$ 202	$ 257	$ 407