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Fair Value Measurements (Estimated Fair Value Of Company Long Term Debt) (Details) (USD $)
In Millions, unless otherwise specified
Oct. 27, 2012
Oct. 29, 2011
Notional Amount
   
Long-term debt $ 6,583 $ 5,903
Carrying Amount
   
Long-term debt 6,784 6,124
Fair Value
   
Long-term debt $ 7,736 $ 6,500