Supplemental Balance Sheet Data - Property Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Land	$ 175us-gaap_Land	$ 177us-gaap_Land
Buildings	2,554us-gaap_BuildingsAndImprovementsGross	2,574us-gaap_BuildingsAndImprovementsGross
Machinery and equipment	13,274us-gaap_MachineryAndEquipmentGross	13,437us-gaap_MachineryAndEquipmentGross
Construction in progress	510us-gaap_ConstructionInProgressGross	591us-gaap_ConstructionInProgressGross
Property, Plant and Equipment, Gross	16,513us-gaap_PropertyPlantAndEquipmentGross	16,779us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation	(9,353)	(9,420)
Total	$ 7,160us-gaap_PropertyPlantAndEquipmentNet	$ 7,359us-gaap_PropertyPlantAndEquipmentNet

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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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office 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.

+ References

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