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Segment Disclosures and Related Information - Net Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income $ 2,798 $ 4,527 $ 7,950 $ 15,431
Operating Segments | Alaska        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 448 580 1,236 1,851
Operating Segments | Lower 48        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 1,781 2,653 4,863 9,024
Operating Segments | Canada        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 186 119 224 726
Operating Segments | Europe, Middle East and North Africa        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 253 922 882 1,719
Operating Segments | Asia Pacific        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 465 520 1,374 2,181
Operating Segments | Other International        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income (2) (28) (5) (28)
Corporate and Other        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income $ (333) $ (239) $ (624) $ (42)