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Other Comprehensive Income (Loss) (Amounts Included in Accumulated Other Comprehensive Income (Loss)) (Detail) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Components of Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity Attributable to Parent, Beginning Balance			$ 6,933,504				$ 6,933,504
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	$ 45,886	$ 83,093	(184,717)	$ (24,911)	$ 43,135	$ 42,180	(55,738)	$ 60,404
Stockholders' Equity Attributable to Parent, Ending Balance	6,661,934						6,661,934
Foreign currency translation adjustment	45,886	83,093	(184,717)	(24,911)	43,135	42,180	(55,738)	60,404
Accumulated Other Comprehensive Income (Loss) [Member]
Components of Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity Attributable to Parent, Beginning Balance			(10,963)			(74,786)	(10,963)	(74,786)
Amounts reclassified into earnings							3,377	5,085
Change in fair value							(50,014)	(41,761)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	45,886	83,093	(184,717)	(24,911)	43,135	42,180	(55,738)	60,404
Stockholders' Equity Attributable to Parent, Ending Balance	(113,338)			(61,228)			(113,338)	(61,228)
Foreign currency translation adjustment	45,886	$ 83,093	(184,717)	(24,911)	$ 43,135	42,180	(55,738)	60,404
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Interest Rate Swap [Member]
Components of Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity Attributable to Parent, Beginning Balance			(29,255)			8,892	(29,255)	8,892
Amounts reclassified into earnings							3,377	5,085
Change in fair value							(50,014)	(41,761)
Stockholders' Equity Attributable to Parent, Ending Balance	(75,892)			(37,954)			(75,892)	(37,954)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Foreign Currency Translation Adjustment [Member]
Components of Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity Attributable to Parent, Beginning Balance			$ 18,292			$ (83,678)	18,292	(83,678)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax							(55,738)	60,404
Stockholders' Equity Attributable to Parent, Ending Balance	$ (37,446)			$ (23,274)			(37,446)	(23,274)
Foreign currency translation adjustment							$ (55,738)	$ 60,404

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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