Summarized Financial Data - Chevron U.S.A. Inc. - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	$ 46,580	$ 48,842
Costs and other deductions	40,794	41,274
Net income attributable to equity method investee	5,501	6,574
Chevron U.S.A. Inc.
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	36,490	37,729
Costs and other deductions	34,947	35,522
Net income attributable to equity method investee	$ 1,392	$ 1,830