Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	$ (113,767)
Net Change	(218,676)
Balance as of December 31, 2014	(332,443)
Foreign currency translation gain (loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	(132,881)
Net Change	(204,065)
Balance as of December 31, 2014	(336,946)
Unrealized gain (loss) on cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	(2,187)
Net Change	8,790
Balance as of December 31, 2014	6,603
Unrealized gain (loss) on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	180
Net Change	(279)
Balance as of December 31, 2014	(99)
Unamortized gain (loss) on defined benefit plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Change	(2,001)
Balance as of December 31, 2014	(2,001)
Other comprehensive loss (income) attributable to redeemable non-controlling interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	21,121
Net Change	$ (21,121)