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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph a

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

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- Definition

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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Property, Plant and Equipment, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 12,878us-gaap_PropertyPlantAndEquipmentGross		$ 12,566us-gaap_PropertyPlantAndEquipmentGross
Less: Accumulated depreciation and amortization	(3,677)		(3,611)
Property, plant and equipment, net	9,201us-gaap_PropertyPlantAndEquipmentNet		8,955us-gaap_PropertyPlantAndEquipmentNet
Depreciation and amortization expense related to property, plant and equipment	182us-gaap_Depreciation	167us-gaap_Depreciation
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	499		489
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,358		2,353
Buildings and improvements \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	4 years
Buildings and improvements \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	40 years
Machinery, equipment and furniture
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,688		5,594
Machinery, equipment and furniture \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	1 year
Machinery, equipment and furniture \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	40 years
Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,686		3,546
Less: Accumulated depreciation and amortization	(978)		(957)
Assets leased to others \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	15 years
Assets leased to others \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	39 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	647		584
Railcars [Member] \| Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,300		3,100
Real estate properties [Member] \| Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 434		$ 450