v3.25.2
Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Inventories      
Finished goods $ 742 $ 745 $ 957
Raw materials 196 169 144
Operating supplies 52 49 52
Inventories $ 990 $ 963 $ 1,153