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Inventories (Tables)
3 Months Ended
Mar. 31, 2025
Inventory Disclosure [Abstract]  
Inventories
($ in millions)March 31, 2025December 31, 2024
Finished products$1,131 $949 
Work in process251 235 
Raw materials681 613 
Supplies52 49 
Total Inventories$2,115 $1,846