Accumulated Other Comprehensive Income - Amount of Income Tax (Expense) Benefit Allocated to Component of Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Equity [Abstract]
Foreign Currency Translation, Other comprehensive (loss) income, before tax	$ (101,675)	$ 40,436	$ (107,011)	$ 10,654
Foreign Currency Translation, Income tax benefit (expense)	1,357	177	631	1,291
Foreign Currency Translation, Other comprehensive (loss) income, net of tax	(100,318)	40,613	(106,380)	11,945
Pension and Post-retirement Benefits, Other comprehensive income (loss), before tax	(143)	(197)	(602)	(589)
Pension and Post-retirement Benefits, Income tax benefit (expense)	(4)	(4)	(13)	(16)
Pension and Post-retirement Benefits, Other comprehensive (loss) income, net of tax	(147)	(201)	(615)	(605)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(1,556)		(17,976)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	568		6,567
Unrealized loss on interest rate swap, Other comprehensive (loss) income, net of tax	(988)	0	(11,409)	0
Other, Other comprehensive (loss) income, before tax	35	58	146	159
Other, Income tax benefit (expense)	(2)	(20)	(41)	(60)
Other, Other comprehensive (loss) income, net of tax	$ 33	$ 38	$ 105	$ 99