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Valuation And Qualifying Accounts (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Oct. 01, 2011
Allowance for Doubtful Accounts [Member]
      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 33 $ 31 $ 32
Charged to Costs and Expenses 17 7 3
Charged to Other Accounts 0 0 0
(Deductions) (4) (5) (4)
Balance at End of Period 46 33 31
Inventory Lower of Cost or Market Allowance [Member]
      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 24 6 2
Charged to Costs and Expenses 49 52 12
Charged to Other Accounts 0 0 0
(Deductions) (57) (34) (8)
Balance at End of Period 16 24 6
Valuation Allowance on Deferred Tax Assets [Member]
      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 78 92 96
Charged to Costs and Expenses 8 16 16
Charged to Other Accounts 0 0 0
(Deductions) (9) (30) (20)
Balance at End of Period $ 77 $ 78 $ 92