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Summary Of Significant Accounting Policies (Merchandise Inventories (Detail) - USD ($)
$ in Millions
Aug. 28, 2016
Aug. 30, 2015
Schedule of Inventory [Line Items]    
Merchandise inventories $ 8,969 $ 8,908
UNITED STATES    
Schedule of Inventory [Line Items]    
United States 6,422 6,427
Foreign    
Schedule of Inventory [Line Items]    
Foreign $ 2,547 $ 2,481