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Derivative Financial Instruments (Pretax Impact Of Undesignated Derivative Instruments On The Consolidated Statements Of Income) (Details) - Not Designated as Hedging Instrument [Member] - USD ($)
$ in Millions
12 Months Ended
Oct. 01, 2016
Oct. 03, 2015
Sep. 27, 2014
Derivative [Line Items]      
Gain/(Loss) Recognized in Earnings $ (54) $ (99) $ (61)
Commodity Contracts [Member] | Sales [Member]      
Derivative [Line Items]      
Gain/(Loss) Recognized in Earnings (73) (62) 75
Commodity Contracts [Member] | Cost of Sales [Member]      
Derivative [Line Items]      
Gain/(Loss) Recognized in Earnings 17 (33) (136)
Foreign Currency [Member] | Other Nonoperating Income (Expense) [Member]      
Derivative [Line Items]      
Gain/(Loss) Recognized in Earnings $ 2 $ (4) $ 0