XML 58 R43.htm IDEA: XBRL DOCUMENT v3.22.1
Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Inventories      
Finished goods $ 676 $ 659 $ 672
Raw materials 121 119 119
Operating supplies 40 38 36
Inventories $ 837 $ 816 $ 827