Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,373,625
Goodwill from business combinations	1,784
Goodwill, ending balance	1,375,409
Consumer Lending
Goodwill [Roll Forward]
Goodwill, beginning balance	306,572
Goodwill from business combinations	121
Goodwill, ending balance	306,693
Commercial Lending
Goodwill [Roll Forward]
Goodwill, beginning balance	825,767
Goodwill from business combinations	1,654
Goodwill, ending balance	827,421
Investment Management
Goodwill [Roll Forward]
Goodwill, beginning balance	220,068
Goodwill from business combinations	9
Goodwill, ending balance	220,077
Wealth Management
Goodwill [Roll Forward]
Goodwill, beginning balance	21,218
Goodwill from business combinations	0
Goodwill, ending balance	$ 21,218

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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