Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 6,299	$ 6,305
Accumulated Amortization	1,645	1,596
Net Book Value	4,654us-gaap_FiniteLivedIntangibleAssetsNet	4,709us-gaap_FiniteLivedIntangibleAssetsNet
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,747	1,960
Accumulated Amortization	535	597
Net Book Value	1,212	1,363
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,641	1,647
Accumulated Amortization	319	257
Net Book Value	1,322	1,390
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	2,531	2,263
Accumulated Amortization	523	407
Net Book Value	2,008	1,856
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	380	435
Accumulated Amortization	268	335
Net Book Value	$ 112	$ 100

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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