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Inventories
6 Months Ended
Jun. 30, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
June 30,
2023
December 31,
2022
(in millions)
Raw materials$180 $215 
Work in progress65 81 
Finished goods321 383 
Spare parts48 43 
Inventories$614 $722