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Accounts payable due to affiliated companies.

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Decrease in company investment carrying value over underlying equity in vie two net assets.

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Investment in vie greater less than underlying equity in vie net assets vie one.

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Investment in vie greater less than underlying equity in vie net assets vie three.

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Loan provided to fund pipe line construction.

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Long term loans included in investments and advances.

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Percentage of affiliate by summarized financial information.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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Investments and Advances - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Percentage of affiliate by summarized financial information	100.00%
Carrying amount of long-term debt	$ 18,730
Investments and advances	38,402	$ 35,261
Other revenues from transactions with related party	8,006	10,378	$ 8,165
Purchased crude oil and products	80,113	94,578	75,765
Accounts and notes receivable due from affiliated companies	810	884
Accounts payable due to affiliated companies	506	631
Chevron's loan to affiliates	4,331	3,402	3,853
Affiliated Entity \| Oil and Gas, Purchased
Variable Interest Entity [Line Items]
Purchased crude oil and products	$ 5,694	$ 6,598	$ 4,800
Tengizchevroil LLP
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	50.00%
Chevron investment carrying value over underlying equity in TCO's net assets	$ 110
Notes receivable from affiliate	$ 3,350
Petropiar
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	30.00%
Chevron investment carrying value less underlying equity in Petropiar net assets	$ 130
Petroboscan
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	39.20%
Chevron investment carrying value over underlying equity in Petroboscan's net assets	$ 90
Carrying amount of long-term debt	$ 566
Caspian Pipeline Consortium
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	15.00%
Long term loans of Caspian Pipeline Consortium included in investments and advances	$ 199
Percentage of Caspian Pipeline Consortium pipeline construction funded by Loans	30.00%
Angola LNG Limited
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	36.40%
Chevron Phillips Chemical Company LLC
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	50.00%
GS Caltex Corporation
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	50.00%