Foreign Currency Sale Contracts (Detail) (Foreign Exchange Contract, European Joint Venture) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013 USD ($)	Sep. 07, 2012 USD ($)	Sep. 07, 2012 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2013 EUR (€)
Derivative [Line Items]
Transaction Date Range				May 2008-January 2013
Total transaction amount	$ 163			$ 163	€ 120
Forward purchase date range				May 2014 - January 2016
Change in fair value gain (loss)	$ (6)	$ (2)	$ 1	$ (2)

Range of Dates Foreign Currency Exchange Rate Derivatives Mature

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- Definition

Range Of Derivative Transaction Dates.

+ References

No definition available.

+ Details

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Current period adjustment in other comprehensive income reflecting gains or losses on foreign currency transactions that are designated as, and are effective as, hedges of a net investment in a foreign entity, net of tax effect.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section 45

-Paragraph 20

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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