Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Roll Forward]
Beginning Balance	$ 626,481	$ 622,773
Purchase price allocation and other adjustments, net		2,407
Impact of foreign currency translation	(1,606)	1,301
Ending Balance	624,875	626,481
U.S.
Goodwill [Roll Forward]
Beginning Balance	597,456	595,049
Purchase price allocation and other adjustments, net		2,407
Impact of foreign currency translation	0	0
Ending Balance	597,456	597,456
International
Goodwill [Roll Forward]
Beginning Balance	29,025	27,724
Purchase price allocation and other adjustments, net		0
Impact of foreign currency translation	(1,606)	1,301
Ending Balance	$ 27,419	$ 29,025