Segment Information - Schedule of Adjusted EBITDA (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 2,413,240	$ 2,052,041	$ 1,657,474
Depreciation, amortization and accretion expense	(1,226,741)	(1,028,892)	(843,510)
Stock-based compensation expense	(180,716)	(175,500)	(156,148)
Acquisitions costs	(34,413)	(38,635)	(64,195)
Impairment charges	0	0	(7,698)
Gain on asset sales	6,013	0	32,816
Income from operations	977,383	809,014	618,739
Americas
Segment Reporting Information [Line Items]
Adjusted EBITDA	1,183,831	1,034,694	787,311
EMEA
Segment Reporting Information [Line Items]
Adjusted EBITDA	698,280	582,697	494,263
Asia-Pacific
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 531,129	$ 434,650	$ 375,900

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

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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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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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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