v3.26.3
Supplemental financial information - Amounts Reclassified out of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income (expense), net (OI&E) $ 72 $ 62 $ 188 $ 190
Provision for income taxes (380) (220) (807) (500)
Net income 2,425 1,364 5,950 3,838
Reclassification out of Accumulated Other Comprehensive Income | Net actuarial losses of defined benefit plans:        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income (expense), net (OI&E) [1] 1 6 2 14
Provision for income taxes 0 (1) 0 (3)
Net income 1 5 2 11
Reclassification out of Accumulated Other Comprehensive Income | Prior service cost (credit) of defined benefit plans:        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income (expense), net (OI&E) [1] 1 0 3 0
Provision for income taxes 0 0 (1) 0
Net income $ 1 $ 0 $ 2 $ 0
[1] Detailed in Note 5