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Stock-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
9 Months Ended 9 Months Ended 3 Months Ended
Mar. 31, 2012
Mar. 31, 2012
2006 Plan And Predecessor Plan [Member]
Mar. 31, 2012
SSARs And Stock Options [Member]
Y
Mar. 31, 2012
Restricted Shares And Restricted Stock Units [Member]
Y
Sep. 30, 2011
PRSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized for grants   12,450,000      
Cumulative grants of equity instruments 12,304,409        
Number of equity instruments forfeited 2,569,634   61,300 222,040  
Percentage of the award that will vest on the third and fourth anniversary 50.00%        
PRSUs granted         721,540
Unrecognized compensation cost     $ 1.4 $ 27.6  
Weighted-average period to recognize unrecognized compensation cost (in years)     1.1 2.7