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Inventories (Tables)
9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventories
($ in millions)September 30, 2022December 31, 2021
Finished products$1,293 $1,175 
Work in process255 234 
Raw materials824 723 
Supplies39 39 
Total Inventories$2,411 $2,171