v3.25.4
Stock-based compensation - Schedule of Components of Stock-based Compensation Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Components of stock-based compensation expense [Abstract]      
Total stock-based compensation expense, pretax $ 494 $ 530 $ 473
Tax benefit from stock-based compensation expense (106) (114) (102)
Total stock-based compensation expense, net of tax 388 416 371
RSUs      
Components of stock-based compensation expense [Abstract]      
Total stock-based compensation expense, pretax 333 351 309
Performance units      
Components of stock-based compensation expense [Abstract]      
Total stock-based compensation expense, pretax 112 133 121
Stock options      
Components of stock-based compensation expense [Abstract]      
Total stock-based compensation expense, pretax $ 49 $ 46 $ 43