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
	Sep. 28, 2024	Sep. 30, 2023	Oct. 01, 2022
Costs and Expenses
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	$ (63)	$ (37)	$ (685)
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	(72)	(159)	547
Net gains (losses)	(135)	(196)	(138)
Interest expense, net
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	(6)	(15)	82
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	(6)	10	(82)
Net gains (losses)	(12)	(5)	0
Income Taxes
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	(65)	(91)	212
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	42	64	(208)
Net gains (losses)	$ (23)	$ (27)	$ 4