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Derivative Financial Instruments (Pretax Impact Of Undesignated Derivative Instruments On The Consolidated Statements Of Income) (Details) - Undesignated - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2018
Jul. 01, 2017
Jun. 30, 2018
Jul. 01, 2017
Derivative [Line Items]        
Gain/(Loss) Recognized in Earnings $ (38) $ (16) $ (15) $ 14
Commodity contracts | Sales        
Derivative [Line Items]        
Gain/(Loss) Recognized in Earnings 21 41 0 117
Commodity contracts | Cost of Sales        
Derivative [Line Items]        
Gain/(Loss) Recognized in Earnings (58) (57) (12) (103)
Interest Rate Swaps | Other income/expense        
Derivative [Line Items]        
Gain/(Loss) Recognized in Earnings $ (1) $ 0 $ (3) $ 0