Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 452,390
Reallocation	0
Goodwill, ending balance	452,390
Wholesale Banking Reporting Unit
Goodwill [Roll Forward]
Goodwill, beginning balance	171,636
Reallocation	0
Goodwill, ending balance	171,636
Community Banking Reporting Unit
Goodwill [Roll Forward]
Goodwill, beginning balance	256,323
Reallocation	(114,701)
Goodwill, ending balance	141,622
Consumer Banking Reporting Unit
Goodwill [Roll Forward]
Goodwill, beginning balance	0
Reallocation	114,701
Goodwill, ending balance	114,701
Mortgage Reporting Unit
Goodwill [Roll Forward]
Goodwill, beginning balance	0
Reallocation	0
Goodwill, ending balance	0
Wealth Management Reporting Unit
Goodwill [Roll Forward]
Goodwill, beginning balance	24,431
Reallocation	0
Goodwill, ending balance	$ 24,431