Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 2,503,338	$ 2,422,346	$ 2,505,381	$ 2,333,307
Foreign currency translation (loss) gain	82,332	(59,975)	(46,851)	(66,112)
Gain on derivative instruments, net of tax of $8.0 million	(21,566)	11,598	21,622	20,495
Balance	2,606,639	2,420,691	2,606,639	2,420,691
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(434,633)
Foreign currency translation (loss) gain			(46,975)
Balance	(481,608)		(481,608)
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 $8.0 million			21,622
Balance	46,580		46,580
Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(5,209)
Foreign currency translation (loss) gain			124
Balance	(5,085)		(5,085)
Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(500,879)	(459,617)	(414,884)	(462,377)
Balance	$ (440,113)	$ (507,994)	$ (440,113)	$ (507,994)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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