Goodwill - Summary of Change in the Net Carrying Amount of Goodwill (Details) $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2017	$ 1,828,365
Acquisitions	0
Dispositions	0
Reclassification to Long-term assets held for sale	(21,664)
Impairments	0
Currency translation adjustments	(97,115)
Adjustments to prior acquisitions	0
Balance at September 30, 2018	1,709,586
Brazil
Goodwill [Roll Forward]
Balance at December 31, 2017	493,373
Acquisitions	0
Dispositions	0
Reclassification to Long-term assets held for sale	(21,664)
Impairments	0
Currency translation adjustments	(96,754)
Adjustments to prior acquisitions	0
Balance at September 30, 2018	374,955
Mexico
Goodwill [Roll Forward]
Balance at December 31, 2017	503,373
Acquisitions	0
Dispositions	0
Reclassification to Long-term assets held for sale	0
Impairments	0
Currency translation adjustments	20,955
Adjustments to prior acquisitions	0
Balance at September 30, 2018	524,328
Andean
Goodwill [Roll Forward]
Balance at December 31, 2017	272,181
Acquisitions	0
Dispositions	0
Reclassification to Long-term assets held for sale	0
Impairments	0
Currency translation adjustments	(15,777)
Adjustments to prior acquisitions	0
Balance at September 30, 2018	256,404
Rest of World
Goodwill [Roll Forward]
Balance at December 31, 2017	98,698
Acquisitions	0
Dispositions	0
Reclassification to Long-term assets held for sale	0
Impairments	0
Currency translation adjustments	(5,539)
Adjustments to prior acquisitions	0
Balance at September 30, 2018	93,159
Online & Partnerships
Goodwill [Roll Forward]
Balance at December 31, 2017	460,740
Acquisitions	0
Dispositions	0
Reclassification to Long-term assets held for sale	0
Impairments	0
Currency translation adjustments	0
Adjustments to prior acquisitions	0
Balance at September 30, 2018	$ 460,740

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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