v3.25.4
Operating Segments and Geographic Data - Segment Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting Information [Line Items]    
Total Assets $ 324,012 $ 256,938
Goodwill 4,568 4,578
U.S.    
Segment Reporting Information [Line Items]    
Total Assets 128,700 103,549
Int'l.    
Segment Reporting Information [Line Items]    
Total Assets 190,744 148,811
Operating Segments    
Segment Reporting Information [Line Items]    
Total Assets 312,218 245,253
Operating Segments | Upstream    
Segment Reporting Information [Line Items]    
Total Assets 256,975 188,483
Goodwill 4,216 4,226
Operating Segments | Upstream | U.S.    
Segment Reporting Information [Line Items]    
Total Assets 84,559 60,914
Operating Segments | Upstream | Int'l.    
Segment Reporting Information [Line Items]    
Total Assets 168,200 123,343
Operating Segments | Downstream    
Segment Reporting Information [Line Items]    
Total Assets 55,243 56,770
Goodwill 352 352
Operating Segments | Downstream | U.S.    
Segment Reporting Information [Line Items]    
Total Assets 33,745 34,253
Operating Segments | Downstream | Int'l.    
Segment Reporting Information [Line Items]    
Total Assets 21,146 22,165
Segment Reporting, Reconciling Item    
Segment Reporting Information [Line Items]    
Total Assets 11,794 11,685
Segment Reporting, Reconciling Item | U.S.    
Segment Reporting Information [Line Items]    
Total Assets 10,396 8,382
Segment Reporting, Reconciling Item | Int'l.    
Segment Reporting Information [Line Items]    
Total Assets $ 1,398 $ 3,303