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Inventories
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Inventories INVENTORIESInventories are stated at the lower of cost, determined on a first-in, first-out basis, or net realizable value, including direct material costs and direct and indirect manufacturing costs. A summary of inventories is shown below:
March 31,
2022
December 31,
2021
 (in millions)
Productive material$1,574 $1,311 
Work-in-process159 172 
Finished goods579 531 
Total$2,312 $2,014