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Financial and Derivative Instruments - Schedule of Consolidated Statement of Income: The Effect of Derivatives (Details) - Commodity - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Total | $ 368 | $ 66 | $ (2,744) | $ (128)
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold |  |  |  |
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Total | 109 | (19) | (35) | (63)
Income Statement Location [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |  |  |  |
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Total | 268 | 86 | (2,699) | (58)
Income Statement Location [Axis]: cvx:NonoperatingIncomeLoss |  |  |  |
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Total | $ (9) | $ (1) | $ (10) | $ (7)

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