Income Taxes (Schedule Of Reconciliation Of Change In Uncertain Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	$ 316,247	$ 105,330	$ 58,629
Gross additions for current year positions	142,778	65,439	6,008
Gross additions for prior period positions	2,111	3,460	873
Gross reductions for prior period positions	(35,888)	(234)	(6,647)
Decrease due to lapse of statute of limitations	(3,085)	(75)	(5,067)
Decrease due to settlements			(597)
Additions related to acquisitions	2,350	150,152	54,750
Currency translation adjustment		(7,825)	(2,619)
Currency translation adjustment	88
Unrecognized Tax Benefits, Ending Balance	424,601	316,247	$ 105,330
Accrued interest and penalties	18,981	12,700
Total UTB balance including accrued interest and penalties	443,582	$ 328,900
Current portion	0
Non-current portion	$ 443,582