Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Land	413us-gaap_Land	$ 434us-gaap_Land
Buildings	2,411us-gaap_BuildingsAndImprovementsGross	2,359us-gaap_BuildingsAndImprovementsGross
Machinery and equipment	12,392us-gaap_MachineryAndEquipmentGross	12,517us-gaap_MachineryAndEquipmentGross
Construction in progress	733us-gaap_ConstructionInProgressGross	978us-gaap_ConstructionInProgressGross
Property, plant and equipment, gross	15,949us-gaap_PropertyPlantAndEquipmentGross	16,288us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation	(9,029)	(9,158)
Property plant and equipment net before spare parts	6,920	7,130
Spare parts	233	190
Property, plant and equipment, net	7,153us-gaap_PropertyPlantAndEquipmentNet	7,320us-gaap_PropertyPlantAndEquipmentNet
Owned
Property, Plant and Equipment [Line Items]
Land	413	433
Buildings	2,375	2,336
Machinery and equipment	12,322	12,445
Construction in progress	733	978
Property, plant and equipment, gross	15,843	16,192
Accumulated depreciation	(9,002)	(9,137)
Property plant and equipment net before spare parts	6,841	7,055
Spare parts	233	190
Property, plant and equipment, net	7,074	7,245
Capital Leases
Property, Plant and Equipment [Line Items]
Land	0	1
Buildings	36	23
Machinery and equipment	70	72
Construction in progress	0	0
Property, plant and equipment, gross	106	96
Accumulated depreciation	(27)	(21)
Property plant and equipment net before spare parts	79	75
Spare parts	0	0
Property, plant and equipment, net	79	$ 75
Minimum \| Building and Building Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	5 years
Minimum \| Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	3 years
Maximum \| Building and Building Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	45 years
Maximum \| Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	40 years

Property Plant and Equipment Net Before Spare Parts

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- Definition

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

-Name Accounting Standards Codification

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

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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.

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The net amount of capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy.

+ References

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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