Goodwill and Other Intangible Assets - Summary of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 419,654
Currency translation adjustments	(995)
Ending balance	418,659
Insurance
Goodwill [Roll Forward]
Beginning balance	77,269
Currency translation adjustments	(45)
Ending balance	77,224
Healthcare and Life Sciences
Goodwill [Roll Forward]
Beginning balance	189,594
Currency translation adjustments	(29)
Ending balance	189,565
Banking, Capital Markets and Diversified Industries
Goodwill [Roll Forward]
Beginning balance	100,153
Currency translation adjustments	(511)
Ending balance	99,642
International Growth Markets
Goodwill [Roll Forward]
Beginning balance	52,638
Currency translation adjustments	(410)
Ending balance	$ 52,228