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Comprehensive Income (Tables)
9 Months Ended
May 07, 2011
Comprehensive Income [Abstract]  
Comprehensive income
Comprehensive income consisted of the following:
                                 
    Twelve Weeks Ended     Thirty-Six Weeks Ended  
    May 7,     May 8,     May 7,     May 8,  
(in thousands)   2011     2010     2011     2010  
 
                               
Net income
  $ 227,373     $ 202,745     $ 547,505     $ 469,378  
Foreign currency translation adjustments
    8,508       6,417       24,790       5,068  
Net impact from derivative instruments
    405       (141 )     (4,594 )     (423 )
Pension liability adjustments
    736       (309 )     3,979       3,435  
Unrealized gains (losses) from marketable securities
    220       (154 )     (181 )     (55 )
 
                       
Comprehensive income
  $ 237,242     $ 208,558     $ 571,499     $ 477,403