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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of inventories
Inventories consist of the following:
June 30, 2021December 31, 2020
Raw materials$193.0 $92.1 
Work in process698.8 634.5 
Finished goods1,136.7 868.2 
Final price deferred(a)
23.9 23.0 
Operating materials and supplies142.0 121.4 
$2,194.4 $1,739.2 
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(a)Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon