Property, Plant, and Equipment (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment, gross	$ 12,985	$ 12,470
Less: accumulated depreciation and amortization	(8,310)	(7,859)
Total property, plant, and equipment, net	4,675	4,611
Land
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment, gross	101	98
Buildings
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment, gross	5,388	5,159
Machinery and equipment
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment, gross	6,728	6,408
Construction in progress
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment, gross	$ 768	$ 805

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 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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- Definition

Amount, net of accumulated depreciation, depletion and amortization, 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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