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) |