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Inventories
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following (in millions):
December 31,
20212020
Raw materials$647 $486 
Work in process2,367 2,437 
Finished goods1,072 970 
Total inventories$4,086 $3,893