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Inventories (Tables)
9 Months Ended
Sep. 30, 2024
Inventory Disclosure [Abstract]  
Inventories
($ in millions)September 30, 2024December 31, 2023
Finished products$1,247 $1,197 
Work in process272 236 
Raw materials693 640 
Supplies51 54 
Total Inventories$2,263 $2,127