Balance Sheet Details (Detail 2) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2015	Oct. 31, 2014
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 26,478	$ 26,252
Accumulated depreciation	(15,450)	(14,912)
Property, plant and equipment, net	11,028	11,340
Purchase of property, plant and equipment	2,700
Sale and retirement of gross Property, Plant and Equipment	2,000
Unfavorable currency impacts on gross property plant and equipment	400
Accumulated depreciation on sale and retirement of property, plant and equipment	1,700
Land
Property, Plant and Equipment, Net
Property, plant and equipment, gross	535	540
Buildings and leasehold improvements
Property, Plant and Equipment, Net
Property, plant and equipment, gross	9,083	9,048
Machinery and equipment, including equipment held for lease
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 16,860	$ 16,664