Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
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	$ 3,446	$ 4,979
Other Benefit Assumptions:
Assumed health care cost-trend rates in the next fiscal year	6.60%	6.20%
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	94.00%
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
Various grantor trust assets invested primarily in interest earning accounts	$ 35	$ 36
Employee Incentive Plan
Charges to expense for cash bonuses	1,169	1,165	$ 462
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	$ (507)	$ (25)
Discount Rate:
Discount rate for pension plans	5.30%	2.90%	2.60%
Cash Contributions and Benefit Payments:
Contributions to employee pension plans	$ 158	$ 146
Estimated contributions to employee pension plans for the next fiscal year	150
ESIP
Employee Savings Investment Plan:
Compensation expense	$ 283	$ 252	$ 281
U.S.
Expected Return on Plan Assets:
Estimated long-term rate of return on US pension plan assets	6.60%
Discount Rate:
Discount rate for pension plans	5.20%	2.80%	2.40%
Cash Contributions and Benefit Payments:
Contributions to employee pension plans	$ 1,164
Estimated contributions to employee pension plans for the next fiscal year	1,000
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	3,187	$ 4,009
Accumulated benefit obligations pension plans	$ 8,595	$ 11,337
Expected Return on Plan Assets:
Estimated long-term rate of return on US pension plan assets	6.60%	6.50%	6.50%
Percentage of US pension plan assets relative to total pension plan assets	67.00%
Plan asset market valuation period, prior to year-end measurement date	3 months
Discount Rate:
Discount rate for pension plans	5.20%	2.80%	2.40%
Cash Contributions and Benefit Payments:
Contributions to employee pension plans	$ 1,164	$ 1,552
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%
Int’l.
Cash Contributions and Benefit Payments:
Contributions to employee pension plans	$ 158
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	766	995
Accumulated benefit obligations pension plans	$ 3,084	$ 4,976
Expected Return on Plan Assets:
Estimated long-term rate of return on US pension plan assets	3.90%	3.50%	4.50%
Discount Rate:
Discount rate for pension plans	5.80%	2.80%	2.40%
Cash Contributions and Benefit Payments:
Contributions to employee pension plans	$ 158	$ 199
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	35.00%
UNITED KINGDOM | Pension Benefits | Fixed Income and Cash | Maximum
Primary Investment:
Pension Plan - Board of Trustees approved asset allocation	45.00%
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	5.00%