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Summarized Financial Data - Chevron U.S.A. Inc. - Summary of Income Statement Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Subsidiary Statements Captions [Line Items]      
Sales and other operating revenues $ 155,606 $ 94,471 $ 139,865
Total costs and other deductions 140,826 102,145 140,980
Net Income (Loss) Attributable to Chevron Corporation 15,625 (5,543) 2,924
Chevron U.S.A. Inc.      
Subsidiary Statements Captions [Line Items]      
Sales and other operating revenues 120,380 67,950 109,314
Total costs and other deductions 114,641 72,575 116,365
Net Income (Loss) Attributable to Chevron Corporation $ 6,904 $ (2,676) $ (5,061)