Condensed Consolidated Financial Statement Details - Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	Apr. 01, 2017	Sep. 24, 2016
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 65,124	$ 61,245
Accumulated depreciation and amortization	(37,961)	(34,235)
Total property, plant and equipment, net	27,163	27,010
Land and buildings
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	11,746	10,185
Machinery, equipment and internal-use software
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	46,688	44,543
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 6,690	$ 6,517