Goodwill and Acquired Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Changes in the carrying amount of goodwill
Beginning balance	$ 1,600,265	$ 1,487,404
Measurement period adjustments related to acquisitions completed in prior years	(1,056)	0
Foreign currency translation	4,962	(1,108)
Ending balance	1,674,371	1,600,265
Janrain, Inc.
Changes in the carrying amount of goodwill
Acquisition	0	92,188
Exceda
Changes in the carrying amount of goodwill
Acquisition	0	14,712
ChameleonX
Changes in the carrying amount of goodwill
Acquisition	0	7,069
Asavie
Changes in the carrying amount of goodwill
Acquisition	$ 70,200	$ 0

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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