Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Federal:
Current	$ 7,652	$ 11,730	$ 8,624
Deferred	5,043	3,408	3,183
Federal income tax expense (benefit)	12,695	15,138	11,807
State:
Current	990	1,265	855
Deferred	(138)	(220)	(178)
State income tax expense (benefits)	852	1,045	677
Foreign:
Current	2,105	4,744	2,147
Deferred	33	(1,806)	(658)
Foreign income tax expense (benefit)	2,138	2,938	1,489
Provision for income taxes	$ 15,685	$ 19,121	$ 13,973