Income Tax Expense / (Benefit) (Detail) - USD ($) $ in Millions		12 Months Ended
		Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Current
Federal		$ 594	$ 95	$ 14
State		129	148	112
Foreign	[1]	554	731	824
Current Income Tax Expense (Benefit), Total		1,277	974	950
Deferred
Federal		(526)	279	1,829
State		(220)	(29)	259
Foreign		(506)	(525)	(12)
Deferred Income Tax Expense (Benefit), Total		(1,252)	(275)	2,076
Income tax expense from continuing operations		25	699	3,026
Income Tax Expense (Benefit), Discontinued Operation		(9)	(10)	39
Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations		$ 16	$ 689	$ 3,065

[1] Includes foreign withholding taxes.