Goodwill and Intangible Assets - Summary of Change in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Beginning Balance	$ 2,552,369	$ 2,554,987
Acquired	82,402
Adjustments	(1,520)	(2,618)
Ending Balance	2,633,251	2,552,369
Travel Network
Goodwill [Roll Forward]
Beginning Balance	2,104,789	2,104,822
Acquired	0
Adjustments	(7)	(33)
Ending Balance	2,104,782	2,104,789
Airline Solutions
Goodwill [Roll Forward]
Beginning Balance	291,363	290,985
Acquired	82,402
Adjustments	(107)	378
Ending Balance	373,658	291,363
Hospitality Solutions
Goodwill [Roll Forward]
Beginning Balance	156,217	159,180
Acquired	0
Adjustments	(1,406)	(2,963)
Ending Balance	$ 154,811	$ 156,217

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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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.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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