Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 2,505,381	$ 2,333,307
Foreign currency translation (loss) gain	(122,000)	44,481
Gain on derivative instruments, net of tax of $16.3 million	43,746	(8,690)
Balance	2,464,167	2,403,343
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(434,633)
Foreign currency translation (loss) gain	(122,321)
Balance	(556,954)
Change in Fair Value of Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	24,958
Gain on derivative instruments, net of tax of $16.3 million	43,746
Balance	68,704
Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(5,209)
Foreign currency translation (loss) gain	321
Balance	(4,888)
Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(414,884)	(462,377)
Balance	$ (493,138)	$ (426,586)