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Changes In Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Changes in accumulated other comprehensive income (loss), net of income taxes        
Beginning balance     $ 47,901  
Ending balance $ 51,264   51,264  
Cumulative Foreign Currency Translation (Loss) Adjustments        
Changes in accumulated other comprehensive income (loss), net of income taxes        
Beginning balance (5,955) $ (6,926) (7,505) $ (6,504)
Other comprehensive income (loss) before reclassifications (136) 497 1,414 (41)
Amounts reclassified from accumulated other comprehensive income 0 0 0 116
Net current period comprehensive income (loss) (136) 497 1,414 75
Ending balance (6,091) (6,429) (6,091) (6,429)
Net Actuarial (Losses) and Prior Service (Costs) and Credits        
Changes in accumulated other comprehensive income (loss), net of income taxes        
Beginning balance (555) (1,365) (611) (1,376)
Other comprehensive income (loss) before reclassifications (11) 14 45 19
Amounts reclassified from accumulated other comprehensive income 0 0 0 6
Net current period comprehensive income (loss) (11) 14 45 25
Ending balance (566) (1,351) (566) (1,351)
Cumulative Gains (Losses) on Derivative Instruments Designated as Cash Flow Hedges        
Changes in accumulated other comprehensive income (loss), net of income taxes        
Beginning balance (66) 156 210 41
Other comprehensive income (loss) before reclassifications 28 (148) (186) (3)
Amounts reclassified from accumulated other comprehensive income 11 (32) (51) (62)
Net current period comprehensive income (loss) 39 (180) (237) (65)
Ending balance $ (27) $ (24) $ (27) $ (24)