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Earnings Per Share (Narrative) (Details) (Stock Options [Member], USD $)
12 Months Ended
Aug. 30, 2014
Aug. 31, 2013
Aug. 25, 2012
Stock Options [Member]
     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive shares 457,421 664,994 727,664
Antidilutive shares average price (in dollars per share) $ 30.38 $ 29.83 $ 29.08