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Inventories
6 Months Ended
Jun. 30, 2025
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
June 30,
2025
December 31,
2024
(in millions)
Raw materials$130 $129 
Work in progress72 60 
Finished goods366 318 
Spare parts62 60 
Inventories$630 $567