Goodwill and Intangible Assets, Net Goodwill Table (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill, Gross	$ 2,377us-gaap_GoodwillGross	$ 2,329us-gaap_GoodwillGross
Goodwill, Accumulated Impairment	(329)	(329)
Goodwill, Net Carrying Value	2,048us-gaap_Goodwill	2,000us-gaap_Goodwill
Automotive Segment [Member]
Goodwill [Line Items]
Goodwill, Gross	1,437	1,389
Goodwill, Accumulated Impairment	(226)	(226)
Goodwill, Net Carrying Value	1,211	1,163
Energy Segment [Member]
Goodwill [Line Items]
Goodwill, Gross	930	930
Goodwill, Accumulated Impairment	(103)	(103)
Goodwill, Net Carrying Value	827	827
Railcar Segment [Member]
Goodwill [Line Items]
Goodwill, Gross	7	7
Goodwill, Accumulated Impairment	0	0
Goodwill, Net Carrying Value	7	7
Food Packaging Segment [Member]
Goodwill [Line Items]
Goodwill, Gross	3	3
Goodwill, Accumulated Impairment	0	0
Goodwill, Net Carrying Value	$ 3	$ 3

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

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