Summarized Financial Data - Chevron U.S.A. Inc. - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	$ 48,842	$ 52,314
Costs and other deductions	41,274	45,319
Net income attributable to equity method investee	6,574	6,259
Chevron U.S.A. Inc.
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	37,729	41,502
Costs and other deductions	35,522	39,636
Net income attributable to equity method investee	$ 1,830	$ 1,754