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Inventories (Tables)
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Inventories
($ in millions)June 30, 2022December 31, 2021
Finished products$1,336 $1,175 
Work in process263 234 
Raw materials843 723 
Supplies39 39 
Total Inventories$2,481 $2,171