Segment Information - Schedule of Adjusted EBITDA (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Total adjusted EBITDA	$ 674,702	$ 612,526	$ 2,011,867	$ 1,796,045
Depreciation, amortization and accretion expense	(321,746)	(306,318)	(957,001)	(921,611)
Stock-based compensation expense	(63,871)	(47,588)	(174,413)	(139,849)
Impairment charges	(1,189)	0	(16,023)	0
Transaction costs	(2,991)	1,120	(8,236)	(33,932)
Gain on asset sale	463	6,013	463	6,013
Income from operations	285,368	265,753	856,657	706,666
Americas [Member]
Segment Reporting Information [Line Items]
Total adjusted EBITDA	306,656	296,003	923,546	881,507
EMEA [Member]
Segment Reporting Information [Line Items]
Total adjusted EBITDA	212,518	179,797	621,235	516,790
Asia-Pacific [Member]
Segment Reporting Information [Line Items]
Total adjusted EBITDA	$ 155,528	$ 136,726	$ 467,086	$ 397,748

Adjusted earnings before interest, taxes, depreciation and amortization/accretion.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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The net result for the period of deducting operating expenses from operating revenues.

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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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