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Income Taxes (Reconciliation Of Statutory Federal Income Tax Rate To Effective Tax Rate) (Details)
12 Months Ended
Sep. 03, 2016
Aug. 29, 2015
Aug. 30, 2014
Income Taxes [Abstract]      
U.S. Federal statutory rate 35.00% 35.00% 35.00%
State income taxes, net of Federal benefit 3.00% 3.10% 3.10%
Other, net (0.20%) (0.10%) (0.30%)
Effective income tax rate 37.80% 38.00% 37.80%