Accumulated Other Comprehensive Loss - Components Of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 2,422,346	$ 2,653,301	$ 2,333,307	$ 2,572,871
Foreign currency translation (loss) gain	(59,975)	(31,959)	(66,112)	(82,778)
Gain on derivative instruments, net of tax of $10.7 million	11,598	7,380	20,495	16,434
Balance	2,420,691	2,680,249	2,420,691	2,680,249
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(504,528)
Foreign currency translation (loss) gain			(66,174)
Balance	(570,702)		(570,702)
Change in Fair Value of Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			43,966
Gain on derivative instruments, net of tax of $10.7 million			20,495
Balance	64,461		64,461
Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(1,815)
Foreign currency translation (loss) gain			62
Balance	(1,753)		(1,753)
Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(459,617)	(415,883)	(462,377)	(374,118)
Balance	$ (507,994)	$ (440,462)	$ (507,994)	$ (440,462)

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 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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- Definition

Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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- Definition

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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