Other Comprehensive Income (Loss) (Schedule Of Tax Effects Allocated To Each Component Of Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net unrealized (loss) gain on securities:
Unrealized (loss) gain arising during the period	$ (1,386)	$ 2,198
Net unrealized gain (loss) on foreign currency:
Foreign currency translation gain (loss) arising during the period	54,572	(131,380)
Other comprehensive income (loss)	53,186	(129,182)
Net unrealized (loss) gain on securities:
Unrealized (loss) gain arising during the period	526	(685)
Net unrealized gain (loss) on foreign currency:
Foreign currency translation gain (loss) arising during the period	26,191	32
Other comprehensive income (loss)	26,717	(653)
Net unrealized (loss) gain on securities:
Unrealized (loss) gain arising during the period	(860)	1,513
Foreign currency translation (loss) gain:
Foreign currency translation gain (loss)	80,763	(131,348)
OTHER COMPREHENSIVE INCOME (LOSS)	$ 79,903	$ (129,835)