Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 105,604	$ 114,502	$ 192,115	$ 190,314
Other comprehensive income (loss):
Foreign currency translation adjustments	90,320	(27,704)	108,432	17,484
Unrealized loss on hedging activities, net of tax benefit of $104, $0, $193 and $0, respectively	(726)	0	(1,348)	0
Other comprehensive income (loss)	89,594	(27,704)	107,084	17,484
Total comprehensive income	$ 195,198	$ 86,798	$ 299,199	$ 207,798