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Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Maximum annual increase percentage to company contribution for retiree medical coverage | 4.00% |  |  |
Funded Status: |  |  |  |
Amounts recognized on a before-tax bases in "Accumulated other comprehensive loss" for the company's pension and other postretirement benefit plans | $ 3,792 | $ 3,446 |  |
Other Benefit Assumptions: |  |  |  |
Assumed health care cost-trend rates in the next fiscal year | 8.40% | 6.60% |  |
Ultimate trend rate for health care cost | 4.50% | 4.50% |  |
Primary Investment: |  |  |  |
Company's US and UK pension plans as a percentage of total pension assets | 95.00% |  |  |
Benefit Plan Trusts: |  |  |  |
Number of Chevron treasury stocks held in benefit plan trust for funding obligations | 14,168,000 | 14,168,000 | 14,168,000 | 14,168,000
Employee Incentive Plan |  |  |  |
Charges to expense for cash bonuses | $ 809 | $ 1,169 | $ 1,165 |
Other Benefits |  |  |  |
Funded Status: |  |  |  |
Amounts recognized on a before-tax bases in "Accumulated other comprehensive loss" for the company's pension and other postretirement benefit plans | $ (355) | $ (507) |  |
Discount Rate: |  |  |  |
Discount rate for pension plans | 5.10% | 5.30% | 2.90% |
Cash Contributions and Benefit Payments: |  |  |  |
Contributions to employee pension plans | $ 159 | $ 158 |  |
Estimated contributions to employee pension plans for the next fiscal year | 150 |  |  |
ESIP |  |  |  |
Employee Savings Investment Plan: |  |  |  |
Compensation expense | 320 | 283 | $ 252 |
Int'l. |  |  |  |
Cash Contributions and Benefit Payments: |  |  |  |
Contributions to employee pension plans | 100 |  |  |
Estimated contributions to employee pension plans for the next fiscal year | 100 |  |  |
Int'l. | Pension Benefits |  |  |  |
Funded Status: |  |  |  |
Amounts recognized on a before-tax bases in "Accumulated other comprehensive loss" for the company's pension and other postretirement benefit plans | 949 | 766 |  |
Accumulated benefit obligations pension plans | $ 3,378 | $ 3,084 |  |
Expected Return on Plan Assets: |  |  |  |
Estimated long-term rate of return on US pension plan assets | 6.10% | 3.90% | 3.50% |
Discount Rate: |  |  |  |
Discount rate for pension plans | 5.50% | 5.80% | 2.80% |
Cash Contributions and Benefit Payments: |  |  |  |
Contributions to employee pension plans | $ 100 | $ 158 |  |
U.S. |  |  |  |
Expected Return on Plan Assets: |  |  |  |
Estimated long-term rate of return on US pension plan assets | 7.00% |  |  |
Discount Rate: |  |  |  |
Discount rate for pension plans | 5.00% | 5.20% | 2.80% |
Cash Contributions and Benefit Payments: |  |  |  |
Contributions to employee pension plans | $ 1,020 |  |  |
Estimated contributions to employee pension plans for the next fiscal year | 750 |  |  |
U.S. | Pension Benefits |  |  |  |
Funded Status: |  |  |  |
Amounts recognized on a before-tax bases in "Accumulated other comprehensive loss" for the company's pension and other postretirement benefit plans | 3,198 | $ 3,187 |  |
Accumulated benefit obligations pension plans | $ 9,284 | $ 8,595 |  |
Expected Return on Plan Assets: |  |  |  |
Estimated long-term rate of return on US pension plan assets | 7.00% | 6.60% | 6.50% |
Percentage of US pension plan assets relative to total pension plan assets | 71.00% |  |  |
Plan asset market valuation period, prior to year-end measurement date | 3 months |  |  |
Discount Rate: |  |  |  |
Discount rate for pension plans | 5.00% | 5.20% | 2.80% |
Cash Contributions and Benefit Payments: |  |  |  |
Contributions to employee pension plans | $ 1,020 | $ 1,164 |  |
U.S. | Pension Benefits | Equities | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 35.00% |  |  |
U.S. | Pension Benefits | Equities | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 65.00% |  |  |
U.S. | Pension Benefits | Fixed Income and Cash | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 25.00% |  |  |
U.S. | Pension Benefits | Fixed Income and Cash | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 45.00% |  |  |
U.S. | Pension Benefits | Real Estate | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 5.00% |  |  |
U.S. | Pension Benefits | Real Estate | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 25.00% |  |  |
U.S. | Pension Benefits | Other | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 0.00% |  |  |
U.S. | Pension Benefits | Other | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 5.00% |  |  |
U.S. | Pension Benefits | Cash | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 0.00% |  |  |
U.S. | Pension Benefits | Cash | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 15.00% |  |  |
UNITED KINGDOM | Pension Benefits | Equities | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 5.00% |  |  |
UNITED KINGDOM | Pension Benefits | Equities | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 15.00% |  |  |
UNITED KINGDOM | Pension Benefits | Fixed Income and Cash | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 63.00% |  |  |
UNITED KINGDOM | Pension Benefits | Fixed Income and Cash | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 93.00% |  |  |
UNITED KINGDOM | Pension Benefits | Real Estate | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 5.00% |  |  |
UNITED KINGDOM | Pension Benefits | Real Estate | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 15.00% |  |  |
UNITED KINGDOM | Pension Benefits | Cash | Minimum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 0.00% |  |  |
UNITED KINGDOM | Pension Benefits | Cash | Maximum |  |  |  |
Primary Investment: |  |  |  |
Pension Plan - Board of Trustees approved asset allocation | 7.00% |  |  |

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