Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 6,291	$ 6,299
Accumulated Amortization	1,716	1,645
Net Book Value	4,575us-gaap_FiniteLivedIntangibleAssetsNet	4,654us-gaap_FiniteLivedIntangibleAssetsNet
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,744	1,747
Accumulated Amortization	568	535
Net Book Value	1,176	1,212
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,640	1,641
Accumulated Amortization	335	319
Net Book Value	1,305	1,322
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	2,530	2,531
Accumulated Amortization	555	523
Net Book Value	1,975	2,008
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	377	380
Accumulated Amortization	258	268
Net Book Value	$ 119	$ 112

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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