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Derivative Financial Instruments (Pretax Impact Of Cash Flow Hedge Derivative Instruments On The Consolidated Statements Of Income) (Details) - Cash Flow Hedging [Member] - USD ($)
$ in Millions
3 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Derivative [Line Items]    
Gain/(Loss) Recognized in OCI on Derivatives $ (2) $ 1
Gain/(Loss) Reclassified from OCI to Earnings (1) (4)
Commodity contracts    
Derivative [Line Items]    
Gain/(Loss) Recognized in OCI on Derivatives (2) 1
Commodity contracts | Cost of Sales    
Derivative [Line Items]    
Gain/(Loss) Reclassified from OCI to Earnings (1) (4)
Foreign exchange contracts    
Derivative [Line Items]    
Gain/(Loss) Recognized in OCI on Derivatives 0 0
Foreign exchange contracts | Other income/expense    
Derivative [Line Items]    
Gain/(Loss) Reclassified from OCI to Earnings $ 0 $ 0