Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,459,008
Goodwill from business combinations	9,346
Goodwill, ending balance	1,468,354
Consumer Lending
Goodwill [Roll Forward]
Goodwill, beginning balance	308,248
Goodwill from business combinations	85
Goodwill, ending balance	308,333
Commercial Lending
Goodwill [Roll Forward]
Goodwill, beginning balance	896,015
Goodwill from business combinations	4,866
Goodwill, ending balance	900,881
Investment Management
Goodwill [Roll Forward]
Goodwill, beginning balance	220,430
Goodwill from business combinations	25
Goodwill, ending balance	220,455
Wealth Management | Consumer Lending
Goodwill [Roll Forward]
Goodwill, beginning balance	34,315
Goodwill from business combinations	4,370
Goodwill, ending balance	$ 38,685