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Inventories (Tables)
9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consists of the following:
(Dollars in millions)September 30, 2025December 31, 2024
Raw materials$120 $86 
Work in progress267 264 
Finished goods17 
Total inventories $404 $358