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Inventories (Tables)
6 Months Ended
Jun. 30, 2023
Inventory Disclosure [Abstract]  
Inventories
($ in millions)June 30, 2023December 31, 2022
Finished products$1,390 $1,209 
Work in process275 238 
Raw materials794 784 
Supplies47 41 
Total Inventories$2,506 $2,272