v2.4.0.6
Available for Sale and Held to Maturity Investments (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 02, 2012
Aug. 28, 2011
Available For Sale And Held To Maturity [Line Items]    
Available-for-sale debt maturities, cost basis $ 873  
Held-to-maturity, cost basis 447  
Total available-for-sale, Recorded Basis 879  
Total investments, Recorded Basis 1,326 1,604
Held-to-maturity, Recorded Basis 447  
Short-term Investments
   
Available For Sale And Held To Maturity [Line Items]    
Unrealized gains 6 10
Total investments, Recorded Basis 1,326 1,604
Total investments, Cost Basis 1,320 1,594
Short-term Investments | US Treasury and Government
   
Available For Sale And Held To Maturity [Line Items]    
Available-for-sale debt maturities, cost basis 776 1,096
Unrealized gains 6 8
Total available-for-sale, Recorded Basis 782 1,104
Short-term Investments | Corporate Debt Securities
   
Available For Sale And Held To Maturity [Line Items]    
Available-for-sale debt maturities, cost basis 54 6
Unrealized gains 0 1
Total available-for-sale, Recorded Basis 54 7
Short-term Investments | FDIC-Insured Corporate Bonds
   
Available For Sale And Held To Maturity [Line Items]    
Available-for-sale debt maturities, cost basis 35 208
Unrealized gains 0 1
Total available-for-sale, Recorded Basis 35 209
Short-term Investments | Asset and Mortgage Backed Securities
   
Available For Sale And Held To Maturity [Line Items]    
Available-for-sale debt maturities, cost basis 8 12
Unrealized gains 0 0
Total available-for-sale, Recorded Basis 8 12
Short-term Investments | Available-for-sale Securities
   
Available For Sale And Held To Maturity [Line Items]    
Available-for-sale debt maturities, cost basis 873 1,322
Unrealized gains 6 10
Total available-for-sale, Recorded Basis 879 1,332
Short-term Investments | Held-to-maturity Securities | Certificates of Deposit
   
Available For Sale And Held To Maturity [Line Items]    
Held-to-maturity, cost basis 447 272
Held-to-maturity, Recorded Basis $ 447 $ 272