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Inventories
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following (in millions):
March 31, 2022December 31, 2021
Raw materials$750 $647 
Work in process2,582 2,367 
Finished goods1,079 1,072 
Total inventories$4,411 $4,086