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Segment Disclosures and Related Information - Net Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income $ 2,232 $ 5,145 $ 5,152 $ 10,904
Operating Segments | Alaska        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 372 687 788 1,271
Operating Segments | Lower 48        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 1,230 3,581 3,082 6,371
Operating Segments | Canada        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 32 316 38 607
Operating Segments | Europe, Middle East and North Africa        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 264 385 629 797
Operating Segments | Asia Pacific        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income 387 525 909 1,661
Operating Segments | Other International        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income (4) 0 (3) 0
Corporate and Other        
Net Income (Loss) Attributable to Parent [Abstract]        
Consolidated net income $ (49) $ (349) $ (291) $ 197