Balance Sheet Details (Details 2) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 21,745	$ 21,424
Accumulated depreciation	(12,109)	(11,538)
Property, plant and equipment, net	9,636	9,886
Depreciation expense	3,000	3,100	$ 3,200
Investment in property, plant and equipment	3,400
Sale and retirement of gross property, plant and equipment	2,800
Unfavorable currency impacts on gross property plant and equipment	114
Accumulated depreciation on sale and retirement of property, plant and equipment	2,300
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff \| H3C
Property, Plant and Equipment, Net
Divestiture of property, plant and equipment	251
Land
Property, Plant and Equipment, Net
Property, plant and equipment, gross	497	514
Buildings and leasehold improvements
Property, Plant and Equipment, Net
Property, plant and equipment, gross	6,948	6,924
Machinery and equipment, including equipment held for lease
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 14,300	$ 13,986

Sale and retirement of gross property, plant and equipment used in the normal conduct of business.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB
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Amount of decrease in accumulated depreciation, depletion and amortization as a result of sale or disposal of property, plant and equipment.

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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 classified as property, plant and equipment attributable to disposal group held for sale or disposed of.

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Amount of acquisition of long-lived, 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, furniture and fixtures, and computer equipment.

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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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