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Inventories
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
September 30,
2023
December 31,
2022
(in millions)
Raw materials$171 $215 
Work in progress53 81 
Finished goods303 383 
Spare parts49 43 
Inventories$576 $722