Changes in Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Opening balance	$ 956,064	$ 925,339
Goodwill relating to acquisitions consummated during the period	37,918	43,265
Goodwill relating to divestitures consummated during the period	(3,450)
Impact of measurement period adjustments	(362)	(3,213)
Effect of exchange rate fluctuations	(36,321)	(9,327)
Closing balance	$ 953,849	$ 956,064

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

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-Section 50

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+ References

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

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