v3.26.1
Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Inventories      
Finished goods $ 755 $ 781 $ 742
Raw materials 150 182 196
Operating supplies 42 39 52
Inventories $ 947 $ 1,002 $ 990