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Inventories, net - Inventories (Detail) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 353 $ 373
Work in process 232 189
Finished goods and purchased products 1,323 1,423
Inventory, Gross 1,908 1,985
Less: Inventory reserve (551) (577)
Total $ 1,357 $ 1,408