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Inventories
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:
September 30, 2020December 31, 2019
Raw materials$83.0 $68.3 
Work in process594.9 618.4 
Finished goods829.5 1,219.3 
Final price deferred(a)
56.1 47.9 
Operating materials and supplies117.8 122.5 
$1,681.3 $2,076.4 
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(a)Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon.