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Debt (Tables)
9 Months Ended
Mar. 31, 2012
Debt [Abstract]  
Components Of Long-Term Debt
    March 31,     June 30,  
    2012     2011  
 
Industrial revenue bonds $ 21.6   $ 21.6  
Secured financing   13.9     15.4  
 
    35.5     37.0  
Less: current portion   (18.2 )   (2.8 )
  $ 17.3   $ 34.2