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Inventories, Net
 6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventories, Net Inventories, Net
Certain U.S. inventories are measured by the last-in, first-out (“LIFO”) method at the lower of cost or market, while other U.S. and foreign operations use the first-in, first-out (“FIFO”) or average-cost methods at the lower of cost and net realizable value. Inventories, net consisted of the following:
June 30,December 31,
(in millions)20202019
Raw material and supplies$554  $502  
Work in progress121  113  
Finished goods175  207  
FIFO inventories850  822  
LIFO reserve(14) (15) 
Inventories, net$836  $807