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Inventories (Tables)
3 Months Ended
Mar. 31, 2025
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories consisted of:
($ in millions)March 31, 2025December 31, 2024
Finished goods$777 $764 
Raw materials
26 25 
Work in process688 675 
Supplies81 79 
Total (approximates current cost)$1,572 $1,543 
Decrease to last in, first out (“LIFO”) costs
(3)(7)
 $1,569 $1,536 
Recognized as:
Inventories$1,362 $1,321 
Other assets207 215 
Inventories valued under the LIFO method
145 133 
Schedule of Inventory, Noncurrent
Inventories consisted of:
($ in millions)March 31, 2025December 31, 2024
Finished goods$777 $764 
Raw materials
26 25 
Work in process688 675 
Supplies81 79 
Total (approximates current cost)$1,572 $1,543 
Decrease to last in, first out (“LIFO”) costs
(3)(7)
 $1,569 $1,536 
Recognized as:
Inventories$1,362 $1,321 
Other assets207 215 
Inventories valued under the LIFO method
145 133