Inventories
 3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories consist of the following:
 
 
March 31,
2015
 
December 31,
2014
 
 
Raw materials
$
80.5

 
$
114.6

 
Work in process
466.8

 
505.1

 
Finished goods
908.1

 
1,025.5

 
Operating materials and supplies
67.6

 
73.1

 
 
$
1,523.0

 
$
1,718.3