Goodwill and Other Intangible Assets - Summary of Company's Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning balance	$ 405,637	$ 403,902
Acquisition		1,992
Measurement period adjustments		2,229
Currency translation adjustments	2	(2,486)
Ending balance	405,639	405,637
Insurance
Goodwill [Roll Forward]
Beginning balance	49,929	50,428
Acquisition		0
Measurement period adjustments		0
Currency translation adjustments	106	(499)
Ending balance	50,035	49,929
Healthcare
Goodwill [Roll Forward]
Beginning balance	21,875	21,942
Acquisition		0
Measurement period adjustments		0
Currency translation adjustments	(3)	(67)
Ending balance	21,872	21,875
Emerging Business
Goodwill [Roll Forward]
Beginning balance	47,101	49,020
Acquisition		0
Measurement period adjustments		0
Currency translation adjustments	(100)	(1,919)
Ending balance	47,001	47,101
Analytics
Goodwill [Roll Forward]
Beginning balance	286,732	282,512
Acquisition		1,992
Measurement period adjustments		2,229
Currency translation adjustments	(1)	(1)
Ending balance	$ 286,731	$ 286,732