Derivative Instruments - Net Gains or Losses Recognized in Costs and Expenses on Economic Exposures Associated with Foreign Currency Exchange Rates (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 03, 2020
Costs and Expenses
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	$ (685)	$ (30)	$ 10
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	547	(83)	(56)
Net gains (losses)	(138)	(113)	(46)
Interest expense, net
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	82	(47)	1
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	(82)	47	0
Net gains (losses)	0	0	1
Income Taxes
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	212	(7)	(35)
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	(208)	2	33
Net gains (losses)	$ 4	$ (5)	$ (2)