Consolidated Financial Statement Details - Property, Plant and Equipment, Net (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 61,245	$ 49,257
Accumulated depreciation and amortization	(34,235)	(26,786)
Total property, plant and equipment, net	27,010	22,471
Land and Buildings
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	10,185	6,956
Machinery, Equipment and Internal-Use Software
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	44,543	37,038
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 6,517	$ 5,263