Goodwill And Intangible Assets (Changes To Goodwill) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Goodwill And Intangible Assets [Line Items]
Finite Lived Intangible Assets Additions Net Of Disposals	$ 0	$ 301,800
Balance at beginning of period	1,249,316	813,792
Additions	0	442,170
Disposals	0	(2,834)
Currency translation	(2,216)	(3,812)
Balance at end of period	$ 1,247,100