Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 2,270,131
Ending Balance	2,745,386
Foreign currency translation adjustment (CTA) loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(336,946)
Net Change	(186,763)
Ending Balance	(523,709)
Unrealized gain (loss) on cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	6,603
Net Change	4,550
Ending Balance	11,153
Net investment hedge CTA gain [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	0
Net Change	4,484
Ending Balance	4,484
Unrealized gain (loss) on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(99)
Net Change	(40)
Ending Balance	(139)
Unamortized gain (loss) on defined benefit plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,001)
Net Change	1,153
Ending Balance	(848)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(332,443)
Net Change	(176,616)
Ending Balance	$ (509,059)