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Inventories (Tables)
6 Months Ended
Jun. 30, 2023
Inventory Disclosure [Abstract]  
Schedule of inventories
Inventories consist of the following:
 June 30, 
 2023
December 31, 
 2022
 (in millions)
Finished goods$280 $437 
Raw materials, spare parts and supplies39 37 
Total inventories$319 $474