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Inventory, Net (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventory Table [Table Text Block]
(dollars in millions)20212020
Raw materials$3,024 $3,015 
Work-in-process3,085 2,924 
Finished goods3,069 3,472 
Total inventory, net$9,178 $9,411