Summarized Financial Data - Chevron U.S.A. Inc. - Schedule of Summarized Financial Data - Chevron U.S.A. Inc. (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	$ 47,556	$ 46,101
Costs and other deductions	44,661	42,027
Net income (loss) attributable to CUSA	2,210	3,500
Chevron U.S.A. Inc.
Subsidiary Statements Captions [Line Items]
Sales and other operating revenues	37,307	34,983
Costs and other deductions	38,467	33,683
Net income (loss) attributable to CUSA	$ (898)	$ 1,111

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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