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Balance Sheet Details - Schedule of Property, Plant and Equipment and Narrative (Details) - USD ($) $ in Millions	Apr. 30, 2021	Oct. 31, 2020
Property, Plant and Equipment, Net
Machinery and equipment, including equipment held for lease	$ 9,848	$ 9,624
Property, plant and equipment before accumulated depreciation	11,585	11,599
Accumulated depreciation	(6,105)	(5,974)
Total	5,480	5,625
Land
Property, Plant and Equipment, Net
Equipment leased to customers	75	89
Buildings and leasehold improvements
Property, Plant and Equipment, Net
Equipment leased to customers	$ 1,662	$ 1,886

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