Goodwill and Other Intangible Assets - Summary of Changes in Goodwill by Reportable Business Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 1,552,725
Acquisition Accounting Adjustments	(4,413)
Foreign Currency	13,218
Goodwill, Ending Balance	1,561,530
North America [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	366,594
Acquisition Accounting Adjustments	485
Foreign Currency
Goodwill, Ending Balance	367,079
International [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,186,131
Acquisition Accounting Adjustments	(4,898)
Foreign Currency	13,218
Goodwill, Ending Balance	$ 1,194,451