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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Balance Sheet Detail (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018
Property, Plant and Equipment, Net
Gross property, plant and equipment	$ 4,380	$ 4,071
Accumulated depreciation	(2,776)	(2,542)
Net property, plant and equipment	1,604	1,529
Depreciation	320	306	$ 258
Land and improvements
Property, Plant and Equipment, Net
Gross property, plant and equipment	256	254
Buildings and improvements
Property, Plant and Equipment, Net
Gross property, plant and equipment	$ 1,655	1,590
Buildings and improvements \| Minimum
Property, Plant and Equipment, Net
Useful life	3 years
Buildings and improvements \| Maximum
Property, Plant and Equipment, Net
Useful life	30 years
Demonstration and manufacturing equipment
Property, Plant and Equipment, Net
Gross property, plant and equipment	$ 1,586	1,505
Demonstration and manufacturing equipment \| Minimum
Property, Plant and Equipment, Net
Useful life	3 years
Demonstration and manufacturing equipment \| Maximum
Property, Plant and Equipment, Net
Useful life	5 years
Furniture, fixtures and other equipment
Property, Plant and Equipment, Net
Gross property, plant and equipment	$ 646	602
Furniture, fixtures and other equipment \| Minimum
Property, Plant and Equipment, Net
Useful life	3 years
Furniture, fixtures and other equipment \| Maximum
Property, Plant and Equipment, Net
Useful life	5 years
Construction in progress
Property, Plant and Equipment, Net
Gross property, plant and equipment	$ 237	$ 120