Investments and Advances - Summary of Financial Information of All Equity Affiliates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Total revenues	$ 162,465	$ 94,692	$ 146,516
Income before income tax expense	21,639	(7,453)	5,536
Net Income (Loss)	15,689	(5,561)	2,845
Current assets	33,738	26,078
Current liabilities	26,791	22,183
Total affiliates’ net equity	139,940	132,726	145,208	$ 155,642
Chevron | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Investments [Line Items]
Total revenues	34,359	21,641	32,628
Income before income tax expense	6,984	2,550	5,954
Net Income (Loss)	5,670	2,034	4,366
Current assets	9,267	7,328	12,998
Noncurrent assets	44,360	43,247	41,531
Current liabilities	7,492	5,052	10,610
Noncurrent liabilities	5,982	5,884	5,068
Total affiliates’ net equity	40,153	39,639	38,851
Affiliates | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Investments [Line Items]
Total revenues	71,241	49,093	66,473
Income before income tax expense	15,175	5,682	13,197
Net Income (Loss)	12,598	4,704	9,809
Current assets	21,871	17,087	30,791
Noncurrent assets	100,235	97,468	97,177
Current liabilities	17,275	12,164	26,032
Noncurrent liabilities	24,219	25,586	21,593
Total affiliates’ net equity	$ 80,612	$ 76,805	$ 80,343