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Inventories
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:
 March 31, 
 2022
December 31, 
 2021
 (in millions)
Finished goods$436 $358 
Raw materials, spare parts and supplies52 50 
Total inventories$488 $408