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Fair Value of Financial Assets and Financial Liabilities Measured on Recurring Basis (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
Nov. 25, 2012
Sep. 02, 2012
Nov. 20, 2011
Aug. 28, 2011
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]        
Cash and cash equivalents $ 3,897 $ 3,528 $ 4,319 $ 4,009
Short-term investments 744      
Fair Value, Measurements, Recurring | US Treasury and Government
       
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]        
Cash and cash equivalents 43 12    
Short-term investments $ 698 $ 782