v3.26.3
Shareholders' equity AOCI Reclassifications (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Equity, Class of Treasury Stock [Line Items]        
Income tax expense $ (666) $ (787) $ (2,054) $ (1,825)
Interest expense 204 197 602 559
Net income 2,736 3,107 7,965 7,449
Reclassification out of Accumulated Other Comprehensive Income        
Equity, Class of Treasury Stock [Line Items]        
Net income (93) (47) (300) 48
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income        
Equity, Class of Treasury Stock [Line Items]        
Debt Securities, Available-for-Sale, Realized Gain (Loss) (105) (31) (299) (157)
Income tax expense 20 (11) 43 17
Net income (85) (42) (256) (140)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income        
Equity, Class of Treasury Stock [Line Items]        
Income tax expense (2) (2) (6) (5)
Interest expense 11 8 31 23
Net income 9 6 25 18
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income        
Equity, Class of Treasury Stock [Line Items]        
Income tax expense 4 3 18 (45)
Interest expense (5) (5) (14) (14)
Foreign Currency Transaction Gain (Loss), Realized (16) (9) (73) 229
Net income $ (17) $ (11) $ (69) $ 170