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Inventories (Tables)
9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
Inventories
($ in millions)September 30, 2025December 31, 2024
Finished products$1,159 $949 
Work in process277 235 
Raw materials693 613 
Supplies53 49 
Total Inventories$2,182 $1,846