Balance Sheet Details - Schedule of Property, Plant and Equipment and Narrative (Details) - USD ($) $ in Millions	Apr. 30, 2018	Oct. 31, 2017
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 12,080	$ 11,877
Accumulated depreciation	(5,872)	(5,608)
Total	6,208	6,269
Land
Property, Plant and Equipment, Net
Property, plant and equipment, gross	309	312
Buildings and leasehold improvements
Property, Plant and Equipment, Net
Property, plant and equipment, gross	2,328	2,371
Machinery and equipment, including equipment held for lease
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 9,443	$ 9,194