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Inventory, Net (Tables)
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
(dollars in millions)March 31, 2022December 31, 2021
Raw materials$3,079 $3,024 
Work-in-process3,471 3,085 
Finished goods3,199 3,069 
Total inventory, net$9,749 $9,178