Consolidated Financial Statement Details - Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	Sep. 25, 2021	Sep. 26, 2020
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 109,723	$ 103,526
Accumulated depreciation and amortization	(70,283)	(66,760)
Total property, plant and equipment, net	39,440	36,766
Land and buildings
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	20,041	17,952
Machinery, equipment and internal-use software
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	78,659	75,291
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 11,023	$ 10,283

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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