v3.26.1
Other Comprehensive Income Information (Schedule of Accumulated Other Comprehensive Income Information) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Cumulative Foreign Exchange Translation Adjustment [Roll Forward]        
Current period change excluding amounts reclassified from accumulated other comprehensive income $ (452) $ 2,206 $ (715) $ 2,508
Amounts reclassified from accumulated other comprehensive income 1 0 (4) 0
Postretirement Benefits Reserves Adjustment [Roll Forward]        
Current period change excluding amounts reclassified from accumulated other comprehensive income (51) (12) (86) (46)
Amounts reclassified from accumulated other comprehensive income (25) 7 (52) 30
Accumulated Other Comprehensive Income [Roll Forward]        
Balance at beginning of period     (10,863)  
Balance at end of period (11,549)   (11,549)  
Exxon Mobil Corporation Share After Noncontrolling Interest        
Cumulative Foreign Exchange Translation Adjustment [Roll Forward]        
Beginning balance, cumulative foreign exchange translation adjustment     (13,398) (16,166)
Current period change excluding amounts reclassified from accumulated other comprehensive income     (544) 2,200
Amounts reclassified from accumulated other comprehensive income     (4) 0
Total change in accumulated other comprehensive income     (548) 2,200
Ending balance, cumulative foreign exchange translation adjustment (13,946) (13,966) (13,946) (13,966)
Net investment hedge gain/(loss), net of taxes     80 (293)
Postretirement Benefits Reserves Adjustment [Roll Forward]        
Beginning balance, postretirement benefits reserves adjustment     2,535 1,547
Current period change excluding amounts reclassified from accumulated other comprehensive income     (86) (46)
Amounts reclassified from accumulated other comprehensive income     (52) 29
Total change in accumulated other comprehensive income     (138) (17)
Ending balance, postretirement benefits reserves adjustment 2,397 1,530 2,397 1,530
Accumulated Other Comprehensive Income [Roll Forward]        
Balance at beginning of period     (10,863) (14,619)
Current period change excluding amounts reclassified from accumulated other comprehensive income, Total     (630) 2,154
Amounts reclassified from accumulated other comprehensive income     (56) 29
Total change in accumulated other comprehensive income     (686) 2,183
Balance at end of period $ (11,549) $ (12,436) $ (11,549) $ (12,436)