Stockholder's Equity - Components of Accumulated Other Comprehensive Income (Loss) Reclassified (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ 1,595,468
Other comprehensive income, net of tax		2,393	$ 27,453
Ending Balance		1,618,905
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(42,082)	(29,925)
Other comprehensive income (loss) before reclassification		239	(3,343)
Other comprehensive income, net of tax		239	(3,343)
Ending Balance		(41,843)	(33,268)
Unrealized holding gain (loss) on investments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		269	247
Other comprehensive income (loss) before reclassification		19	5
Other comprehensive income, net of tax		19	5
Ending Balance		288	252
Gain (loss) on derivatives[Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	[1]	(25,082)	(64,277)
Other comprehensive income (loss) before reclassification	[1]	5,602	20,534
Amounts reclassified from AOCI	[1],[2]	(3,449)	10,270
Other comprehensive income, net of tax	[1]	2,153	30,804
Ending Balance	[1]	(22,929)	(33,473)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(66,895)	(93,955)
Other comprehensive income (loss) before reclassification		5,860	17,196
Amounts reclassified from AOCI		(3,449)	10,270
Other comprehensive income, net of tax		2,411	27,466
Ending Balance		$ (64,484)	$ (66,489)

[1] Refer to Note 11 for additional details.

[2] Reclassified to Cost of operations and Other non-operating income (expense), net.