Summarized Financial Data - Chevron U.S.A. Inc. - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales and other operating revenues	$ 52,314	$ 31,076
Costs and other deductions	45,319	29,852
Net income attributable to equity method investee	6,259	1,377
Chevron U.S.A. Inc.
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales and other operating revenues	41,502	23,479
Costs and other deductions	39,636	23,322
Net income attributable to equity method investee	$ 1,754	$ 257