Consolidated Financial Statement Details - Other Income/(Expense), Net (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Other Income and Expenses [Abstract]
Interest and dividend income	$ 3,999	$ 2,921	$ 1,795
Interest expense	(1,456)	(733)	(384)
Other expense, net	(1,195)	(903)	(431)
Total other income/(expense), net	$ 1,348	$ 1,285	$ 980