Summarized Financial Data - Chevron U.S.A. Inc. - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	$ 47,216	$ 65,372	$ 96,058	$ 117,686
Costs and other deductions	41,059	52,759	82,333	98,078
Net income attributable to equity method investee	$ 6,010	$ 11,622	12,584	17,881
Chevron U.S.A. Inc.
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues			73,787	93,356
Costs and other deductions			68,982	85,678
Net income attributable to equity method investee			$ 3,978	$ 6,660