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Inventories
3 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories
5. Inventories

Inventories consisted of the following components as of September 30, 2011 and June 30, 2011:

 

($ in millions)    September 30,
2011
     June 30,
2011
 

Raw materials and supplies

   $ 79.2       $ 63.3   

Work in process

     232.7         171.9   

Finished and purchased products

     106.6         93.4   
  

 

 

    

 

 

 

Total inventory

   $ 418.5       $ 328.6   
  

 

 

    

 

 

 

Inventories are valued at the lower of cost or market. Cost for inventories is principally determined using the last-in, first-out ("LIFO") method.