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Fair Value Measurements (Schedule Of Available For Sale Securities) (Details) - USD ($)
$ in Millions
Jul. 02, 2016
Oct. 03, 2015
U.S. Treasury and Agency [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Amortized Cost Basis $ 38 $ 33
Fair Value 38 34
Unrealized Gain/(Loss) 0 1
Corporate And Asset-Backed [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Amortized Cost Basis 58 60
Fair Value 59 61
Unrealized Gain/(Loss) $ 1 $ 1