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Derivative Financial Instruments (Pretax Impact Of Cash Flow Hedge Derivative Instruments On The Consolidated Statements Of Income) (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2023
Oct. 01, 2022
Oct. 02, 2021
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net $ (117) $ 225 $ 14
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of Sales Cost of Sales Cost of Sales
Commodity contracts | Not Designated as Hedging Instrument      
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net $ (98) $ 254 $ 70
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of Sales Cost of Sales Cost of Sales
Foreign exchange contracts | Not Designated as Hedging Instrument      
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net $ 3 $ (9) $ (5)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Cash Flow Hedging [Member] | Commodity contracts      
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net $ 0 $ 0 $ (1)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of Sales Cost of Sales Cost of Sales
Cash Flow Hedging [Member] | Interest rate hedges      
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net $ (2) $ (1) $ (1)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Interest expense Interest expense Interest expense
Fair Value Hedging [Member] | Commodity contracts      
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net $ (19) $ (29) $ (55)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of Sales Cost of Sales Cost of Sales