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Comprehensive Income (Tables)
3 Months Ended
Oct. 31, 2011
Comprehensive Income/Stockholders' Equity [Abstract]  
Total comprehensive income
                 
    Three Months Ended  
    October 31, 2011     October 31, 2010  
Net Income
  $ 32,732     $ 26,281  
Unrealized gain (loss) on cash flow hedges
    1,330       (725 )
Prior service credit and amortization of (gain) loss on post-retirement medical plan
    668       (63 )
Foreign currency translation adjustments (1)
    (19,118 )     30,095  
 
           
Total comprehensive income
  $ 15,612     $ 55,588  
 
           
     
(1)  
The cumulative translation adjustment in the table above includes the settlement of net investment hedges for the three months ended October 31, 2011 of ($584), net of tax.