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Summary Of Significant Policies (Tables)
6 Months Ended
Feb. 12, 2012
Summary Of Significant Policies [Abstract]  
Amount Of Unrealized Gains Or Losses Recognized In Interest Income And Other, Net
     12 Weeks Ended      24 Weeks Ended  
     February 12,
2012
    February 13,
2011
     February 12,
2012
    February 13,
2011
 

Forward foreign-exchange contracts

   $ (6   $ 1       $ (3   $ (1