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Inventories (Information) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Classes of current inventories [abstract]    
Finished products $ 946 $ 807
Work in progress 299 263
Raw materials 349 207
Spare parts 125 125
Total inventories 1,719 1,402
Non-current inventories - mainly raw materials (presented in non-current assets) 149 152
Current inventories $ 1,570 $ 1,250