Summarized Financial Data - Chevron U.S.A. Inc. - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	$ 48,926	$ 51,922	$ 145,080	$ 147,980
Costs and other deductions	44,180	45,342	129,119	127,675
Net income attributable to equity method investee	$ 4,487	$ 6,526	14,422	19,110
Chevron U.S.A. Inc.
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues			112,708	113,817
Costs and other deductions			107,834	106,318
Net income attributable to equity method investee			$ 4,491	$ 6,152