Change in Balances of Accumulated Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (154,303)	$ (86,133)
Other comprehensive income before reclassifications	27,442	2,117
Amounts reclassified from accumulated other comprehensive income	(1,252)	(563)
Net current-period other comprehensive income	26,190	1,554
Ending Balance	(128,113)	(84,579)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(146,708)	(82,067)
Other comprehensive income before reclassifications	24,847	1,865
Net current-period other comprehensive income	24,847	1,865
Ending Balance	(121,861)	(80,202)
Gains (Losses) on Net Investment- Hedge Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(10,708)	(3,912)
Other comprehensive income before reclassifications	724	90
Net current-period other comprehensive income	724	90
Ending Balance	(9,984)	(3,822)
Unrealized Gains (Losses) on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	3,808	846
Other comprehensive income before reclassifications	1,871	158
Amounts reclassified from accumulated other comprehensive income	(1,253)	(568)
Net current-period other comprehensive income	618	(410)
Ending Balance	4,426	436
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(695)	(1,000)
Other comprehensive income before reclassifications		4
Amounts reclassified from accumulated other comprehensive income	1	5
Net current-period other comprehensive income	1	9
Ending Balance	$ (694)	$ (991)