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Equity (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Company's share of undistributed earnings for equity affiliates $ 28,876 $ 26,532
Shares remaining available for issuance (in shares) 614,768  
Shares available for issuance (in shares) 1,600,000  
Chevron Long-Term Incentive Plan (LTIP)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares remaining available for issuance (in shares) 66,000,000  
Shares available for issuance (in shares) 260,000,000