Segment Information - Schedule of Adjusted EBITDA (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 1,657,474	$ 1,271,627	$ 1,113,891
Depreciation, amortization and accretion expense	(843,510)	(528,929)	(484,129)
Stock-based compensation expense	(156,148)	(133,633)	(117,990)
Acquisitions costs	(64,195)	(41,723)	(2,506)
Impairment charges	(7,698)	0	0
Gain on asset sales	32,816	0	0
Income from operations	618,739	567,342	509,266
Americas
Segment Reporting Information [Line Items]
Adjusted EBITDA	787,311	698,604	635,007
EMEA
Segment Reporting Information [Line Items]
Adjusted EBITDA	494,263	318,561	269,222
Asia-Pacific
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 375,900	$ 254,462	$ 209,662

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

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- Definition

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.

+ References

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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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-Publisher FASB
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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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