Income Tax Expense / (Benefit) (Detail) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2023	Oct. 01, 2022	Oct. 02, 2021
Current
Federal		$ 1,475	$ 436	$ 594
State		402	282	129
Foreign	[1]	867	846	554
Current Income Tax Expense (Benefit), Total		2,744	1,564	1,277
Deferred
Federal		(1,180)	407	(526)
State		4	26	(220)
Foreign		(189)	(265)	(506)
Deferred Income Tax Expense (Benefit), Total		(1,365)	168	(1,252)
Income tax expense from continuing operations		1,379	1,732	25
Income Tax Expense (Benefit), Discontinued Operation		0	(14)	(9)
Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations		$ 1,379	$ 1,718	$ 16

[1] Includes foreign withholding taxes.