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Operating Segments and Geographic Data - Segment Earnings (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation $ 15,625 $ (5,543) $ 2,924
Operating Segments      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation 18,732 (2,386) 5,057
Operating Segments | Upstream      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation 15,818 (2,433) 2,576
Operating Segments | Downstream      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation 2,914 47 2,481
Segment Reconciling Items      
Segment Reporting Information [Line Items]      
Interest expense (662) (658) (761)
Interest income 36 52 181
Other (2,481) (2,551) (1,553)
United States | Operating Segments | Upstream      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation 7,319 (1,608) (5,094)
United States | Operating Segments | Downstream      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation 2,389 (571) 1,559
International | Operating Segments | Upstream      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation 8,499 (825) 7,670
International | Operating Segments | Downstream      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to Chevron Corporation $ 525 $ 618 $ 922