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Inventories (Schedule of Inventory) (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Finished products $ 1,241 $ 1,021
Work in process 254 187
Raw materials 714 490
Supplies 40 37
Total $ 2,249 $ 1,735