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Share-Based Compensation (Tables)
3 Months Ended
Nov. 30, 2011
Share-Based Compensation [Abstract]  
Schedule of shares subject to options and SARs
                         
    Number     Weighted
Average
Exercise
Price
    Weighted
Average
Remaining
Contractual Life
(Years)
 

Outstanding at September 1, 2011

    2,807,498     $ 27.45          

Granted

    825,655       11.60          

Forfeited/Expired

    (17,730     28.28          
   

 

 

   

 

 

   

 

 

 

Outstanding at November 30, 2011

    3,615,423     $ 23.83       3.5  

Exercisable at November 30, 2011

    2,621,768     $ 28.19       2.3  
Restricted stock awards and PSUs
                 
    Number     Weighted  Average
Grant-Date
Fair Value
 

Outstanding at September 1, 2011

    2,394,140     $ 13.44  

Granted

    412,821     $ 10.17  

Vested

    (8,717     14.98  

Forfeited

    (24,301     12.49  
   

 

 

   

 

 

 

Outstanding at November 30, 2011

    2,773,943     $ 12.96