Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (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
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013			$ (36,493)
Reclassification adjustment of foreign currency translation	5,609	0	25,324	0
Reclassification adjustment for realized gains on available-for-sale securities	0	0	(840)	0
Balance, September 30, 2014	(8,445)		(8,445)
Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013			(7,912)
Other comprehensive income (loss) before reclassifications			535
Reclassification adjustment of foreign currency translation			0
Reclassification adjustment for realized gains on available-for-sale securities			0
Amounts reclassified from accumulated other comprehensive loss			354
Net current-period other comprehensive income (loss)			889
Balance, September 30, 2014	(7,023)		(7,023)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013			(30,624)
Other comprehensive income (loss) before reclassifications			7,288
Reclassification adjustment of foreign currency translation			21,360
Reclassification adjustment for realized gains on available-for-sale securities			0
Amounts reclassified from accumulated other comprehensive loss			0
Net current-period other comprehensive income (loss)			28,648
Balance, September 30, 2014	(1,976)		(1,976)
Net Unrealized Gains on Marketable Securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013			2,043
Other comprehensive income (loss) before reclassifications			(649)
Reclassification adjustment of foreign currency translation			0
Reclassification adjustment for realized gains on available-for-sale securities			(840)
Amounts reclassified from accumulated other comprehensive loss			0
Net current-period other comprehensive income (loss)			(1,489)
Balance, September 30, 2014	554		554
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013			(36,493)
Other comprehensive income (loss) before reclassifications			7,174
Reclassification adjustment of foreign currency translation			21,360	0
Reclassification adjustment for realized gains on available-for-sale securities			(840)
Amounts reclassified from accumulated other comprehensive loss			354
Net current-period other comprehensive income (loss)			28,048
Balance, September 30, 2014	$ (8,445)		$ (8,445)