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Inventories
6 Months Ended
Jun. 30, 2024
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:
June 30, 2024December 31, 2023
Raw materials$114.6 $135.8 
Work in process951.5 964.8 
Finished goods1,267.2 1,178.0 
Final price deferred(a)
59.3 61.5 
Operating materials and supplies161.4 183.1 
$2,554.0 $2,523.2 
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(a)Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon.