Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) Reclassified (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (97,808)
Other comprehensive income (loss) before reclassification	(38,720)
Amounts reclassified from AOCI	19,838
Net current period other comprehensive income (loss)	(18,882)
Ending Balance	(116,690)
Foreign currency gain (loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(15,212)
Other comprehensive income (loss) before reclassification	(2,042)
Net current period other comprehensive income (loss)	(2,042)
Ending Balance	(17,254)
Unrealized holding loss on investment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	241
Other comprehensive income (loss) before reclassification	12
Net current period other comprehensive income (loss)	12
Ending Balance	253
Deferred gain (loss) on derivatives [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(82,837)	[1]
Other comprehensive income (loss) before reclassification	(36,690)	[1]
Amounts reclassified from AOCI	19,838	[1],[2]
Net current period other comprehensive income (loss)	(16,852)	[1]
Ending Balance	$ (99,689)	[1]

[1] Refer to Note 9 for additional details.

[2] Reclassified to cost of operations and gain on foreign currency, net.