v3.25.4
Employee Benefit Plans - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]        
Maximum annual increase percentage to company contribution for retiree medical coverage 4.00%      
Other Benefit Assumptions:        
Assumed health care cost-trend rates in the next fiscal year 7.90% 8.40%    
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 $ 1,300 $ 965 $ 809  
Other Benefits        
Discount Rate:        
Discount rate for pension plans 5.40% 5.70% 5.10%  
Cash Contributions and Benefit Payments:        
Contributions to employee pension plans $ 147 $ 148    
Estimated contributions to employee pension plans for the next fiscal year 162      
ESIP        
Employee Savings Investment Plan:        
Compensation expense $ 323 330 $ 320  
U.S.        
Expected Return on Plan Assets:        
Estimated long-term rate of return on US pension plan assets 7.10%      
Cash Contributions and Benefit Payments:        
Contributions to employee pension plans $ 473      
Estimated contributions to employee pension plans for the next fiscal year 525      
U.S. | Pension Benefits        
Funded Status:        
Accumulated benefit obligations pension plans $ 10,668 $ 9,053    
Expected Return on Plan Assets:        
Estimated long-term rate of return on US pension plan assets 7.10% 7.00% 7.00%  
Percentage of US pension plan assets relative to total pension plan assets 76.00%      
Plan asset market valuation period, prior to year-end measurement date 3 months      
Discount Rate:        
Discount rate for pension plans 5.50% 5.70% 5.00%  
Cash Contributions and Benefit Payments:        
Contributions to employee pension plans $ 473 $ 754    
U.S. | Pension Benefits | Equities | Minimum        
Primary Investment:        
Pension Plan - Board of Trustees approved asset allocation 30.00%      
U.S. | Pension Benefits | Equities | Maximum        
Primary Investment:        
Pension Plan - Board of Trustees approved asset allocation 60.00%      
U.S. | Pension Benefits | Fixed Income and Cash | Minimum        
Primary Investment:        
Pension Plan - Board of Trustees approved asset allocation 30.00%      
U.S. | Pension Benefits | Fixed Income and Cash | Maximum        
Primary Investment:        
Pension Plan - Board of Trustees approved asset allocation 50.00%      
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 10.00%      
U.S. | Other Benefits        
Discount Rate:        
Discount rate for pension plans 5.30% 5.60% 5.00%  
Int’l.        
Cash Contributions and Benefit Payments:        
Contributions to employee pension plans $ 115      
Estimated contributions to employee pension plans for the next fiscal year 100      
Int’l. | Pension Benefits        
Funded Status:        
Accumulated benefit obligations pension plans $ 3,757 $ 3,066    
Expected Return on Plan Assets:        
Estimated long-term rate of return on US pension plan assets 6.20% 5.90% 6.10%  
Discount Rate:        
Discount rate for pension plans 6.20% 6.00% 5.50%  
Cash Contributions and Benefit Payments:        
Contributions to employee pension plans $ 115 $ 90    
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%