Balance Sheet Details (Details 2) (USD $)	9 Months Ended
Jul. 31, 2012	Oct. 31, 2011
Property, Plant and Equipment
Property, plant and equipment, gross	$ 26,289,000,000	$ 25,462,000,000
Accumulated depreciation	(14,220,000,000)	(13,170,000,000)
Property, plant and equipment, net	12,069,000,000	12,292,000,000
Investment in property, plant and equipment	2,833,000,000
Sale and retirement of gross Property, Plant and Equipment	1,600,000,000
Accumulated depreciation on sale and retirement of property, plant and equipment	1,300,000,000
Land
Property, Plant and Equipment
Property, plant and equipment, gross	652,000,000	687,000,000
Buildings and leasehold improvements
Property, Plant and Equipment
Property, plant and equipment, gross	8,835,000,000	8,620,000,000
Machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	$ 16,802,000,000	$ 16,155,000,000

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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