Income Tax Expense / (Benefit) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2013		Sep. 29, 2012		Oct. 01, 2011
Current
Federal	$ 2,354		$ 1,975		$ 1,851
State	98		227		272
Foreign	474	[1]	422	[1]	521	[1]
Current Income Tax Expense (Benefit), Total	2,926		2,624		2,644
Deferred
Federal	29		465		147
State	61		(2)		(6)
Foreign	(32)		0		0
Deferred Income Tax Expense (Benefit), Total	58		463		141
Income taxes	$ 2,984		$ 3,087		$ 2,785

[1] Includes foreign withholding taxes