v3.26.1
Restructuring provisions (Details) - Restructuring provisions - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Reconciliation of changes in other provisions [abstract]    
January 1 $ 0 $ 0
Additions 96 0
Cash payments (55) 0
Balance as of June 30 $ 41 $ 0