Derivative Financial Instruments (Pretax Impact Of Undesignated Derivative Instruments On The Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Derivative [Line Items]
Cost of Sales	$ 10,918	$ 9,283
Other Nonoperating Income (Expense)	(52)	(19)
Interest expense	100	110
Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	78	95
Not Designated as Hedging Instrument | Commodity contracts | Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	81	98
Not Designated as Hedging Instrument | Foreign exchange contracts | Other income/expense
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	1
Fair Value Hedging [Member] | Commodity contracts | Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(3)	(2)
Cash Flow Hedging [Member] | Commodity contracts | Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(1)
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 0	$ 0