Property, Plant, and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Net property, plant, and equipment
Property, plant, and equipment, gross	$ 9,480	$ 9,398
Accumulated depreciation	(5,906)	(5,901)
Property, plant, and equipment, net	3,574	3,497	$ 3,159
Depreciation expense	510	487	$ 442
Land and improvements
Net property, plant, and equipment
Property, plant, and equipment, gross	152	171
Buildings and improvements
Net property, plant, and equipment
Property, plant, and equipment, gross	1,393	1,379
Machinery and equipment
Net property, plant, and equipment
Property, plant, and equipment, gross	7,298	7,124
Construction in process
Net property, plant, and equipment
Property, plant, and equipment, gross	$ 637	$ 724

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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