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Inventory (Unaudited) (Tables)
9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
$ in millionsSeptember 30, 2025December 31, 2024
Raw materials$340 $293 
Work in process1,203 1,118 
Finished goods72 44 
Inventoried costs, net$1,615 $1,455