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Inventories
 3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:
 
 
March 31, 2020
 
December 31, 2019
 
 
Raw materials
$
62.0

 
$
68.3

 
Work in process
601.2

 
618.4

 
Finished goods
1,120.8

 
1,219.3

 
Final price deferred(a)
44.4

 
47.9

 
Operating materials and supplies
102.5

 
122.5

 
 
$
1,930.9

 
$
2,076.4


______________________________
(a) 
Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon.