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Inventory
3 Months Ended
Mar. 31, 2025
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
3.    INVENTORIED COSTS, NET
Inventoried costs, net consist of the following:
$ in millionsMarch 31, 2025December 31, 2024
Raw materials$307 $293 
Work in process1,217 1,118 
Finished goods54 44 
Inventoried costs, net$1,578 $1,455