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Investments and Advances - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Variable Interest Entity [Line Items] |  |  |
Sales and other operating revenues | $ 196,913 | $ 235,717 | $ 155,606
Purchased crude oil and products | 119,196 | 145,416 | 92,249
Accounts and notes receivable due from affiliated companies | 1,480 | 907 |
Accounts payable due to affiliated companies | $ 591 | 709 |
Percentage of affiliate by summarized financial information | 100.00% |  |
Chevron Phillips Chemical Company LLC |  |  |
Variable Interest Entity [Line Items] |  |  |
Percentage of affiliate by summarized financial information | 100.00% |  |
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 | $ 80 |  |
Principal balance | $ 4,500 |  |
Caspian Pipeline Consortium |  |  |
Variable Interest Entity [Line Items] |  |  |
Equity method investment, ownership percentage | 15.00% |  |
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% |  |
Golden Triangle Polymers Project | Chevron Phillips Chemical Company LLC |  |  |
Variable Interest Entity [Line Items] |  |  |
Equity method investment, ownership percentage | 51.00% |  |
Affiliated Entity |  |  |
Variable Interest Entity [Line Items] |  |  |
Chevron's loan to affiliates | $ 4,494 | 4,278 | 4,704
Sales and other operating revenues | 13,623 | 16,286 | 10,796
Affiliated Entity | Chevron Phillips Chemical Company LLC |  |  |
Variable Interest Entity [Line Items] |  |  |
Chevron's loan to affiliates | 387 |  |
Affiliated Entity | Oil and Gas, Purchased |  |  |
Variable Interest Entity [Line Items] |  |  |
Purchased crude oil and products | $ 7,404 | $ 10,171 | $ 5,778

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