Business Combinations, Goodwill and Intangible Assets - Summary of Company's Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Beginning balance	$ 349,088	$ 349,529
Goodwill reallocation		0
Currency translation adjustments	(411)	(441)
Acquisition	55,225
Ending balance	403,902	349,088
Insurance
Goodwill [Roll Forward]
Beginning balance	50,499	38,276
Goodwill reallocation		12,192
Currency translation adjustments	(71)	31
Acquisition	0
Ending balance	50,428	50,499
Healthcare
Goodwill [Roll Forward]
Beginning balance	21,953	19,276
Goodwill reallocation		2,693
Currency translation adjustments	(11)	(16)
Acquisition	0
Ending balance	21,942	21,953
Emerging Business
Goodwill [Roll Forward]
Beginning balance	49,348	0
Goodwill reallocation		49,803
Currency translation adjustments	(328)	(455)
Acquisition	0
Ending balance	49,020	49,348
Analytics
Goodwill [Roll Forward]
Beginning balance	227,288	227,289
Goodwill reallocation		0
Currency translation adjustments	(1)	(1)
Acquisition	55,225
Ending balance	282,512	227,288
TT&L
Goodwill [Roll Forward]
Beginning balance	0	12,457
Goodwill reallocation		(12,457)
Currency translation adjustments	0	0
Acquisition	0
Ending balance	0	0
F&A
Goodwill [Roll Forward]
Beginning balance	0	46,905
Goodwill reallocation		(46,905)
Currency translation adjustments	0	0
Acquisition	0
Ending balance	0	0
All Other
Goodwill [Roll Forward]
Beginning balance	0	5,326
Goodwill reallocation		(5,326)
Currency translation adjustments	0	0
Acquisition	0
Ending balance	$ 0	$ 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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