Supplementary Financial Information - Property Plant & Equipment (Details) - USD ($) $ in Millions	Jul. 31, 2018	Oct. 31, 2017
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 6,085	$ 5,958
Accumulated depreciation	(3,973)	(4,080)
Property, plant and equipment, net	2,112	1,878
Land, buildings and leasehold improvements
Property, Plant and Equipment, Net
Property, plant and equipment, gross	1,888	2,082
Machinery and equipment, including equipment held for lease
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 4,197	$ 3,876

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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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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