Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013 Contract	Sep. 07, 2012	Sep. 07, 2012	Sep. 30, 2013 Contract
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of foreign currency forward contracts outstanding	5			5
Interest Rate Swap Derivatives
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of interest rate derivative agreements	3			3
Fair value of swaps (decreased) increased	$ (1)	$ (1)	$ (2)	$ (4)
Interest rate notional amount	$ 300			$ 300

Nominal or face amount used to calculate payments on the derivative asset.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

+ Details

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- Definition

The increase (decrease) during the period in the carrying value of derivative instruments reported as assets that are due to be disposed of within one year (or the normal operating cycle, if longer).

+ References

No definition available.

+ Details

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- Definition

Number of foreign currency exchange rate derivatives held by the entity at the reporting date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

+ Details

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Data Type:	xbrli:integerItemType
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Period Type:	instant