v3.26.1
Derivative instruments - Schedule of Income and Expense Line Items (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Total revenues $ 10,054 $ 9,179 $ 18,672 $ 17,328
Other (expense) income, net (73) (394) 2 1,124
Interest expense, net (673) (694) (1,330) (1,417)
Cross-currency swap contracts | Reclassification out of AOCI | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Other (expense) income, net 9 172 (68) 255
Interest Rate Swap        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (losses) on fair value hedging relationships—interest rate swap agreements, hedged items 34 (61) 56 (157)
Derivatives designated as hedging instruments (22) 75 (30) 187
Product sales        
Derivative Instruments, Gain (Loss) [Line Items]        
Total revenues 9,537 8,771 17,755 16,644
Product sales | Foreign currency forward contract (losses) gains | Reclassification out of AOCI | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Total revenues $ (13) $ 12 $ (49) $ 68