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Inventories
3 Months Ended
Mar. 31, 2024
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:
March 31, 2024December 31, 2023
Raw materials$97.0 $135.8 
Work in process964.3 964.8 
Finished goods1,276.7 1,178.0 
Final price deferred(a)
90.7 61.5 
Operating materials and supplies174.3 183.1 
$2,603.0 $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.