Goodwill and Other Intangible Assets, Mortgage Servicing Rights Roll-Forward (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jan. 01, 2022
Summary Of Changes In Balance Of Mortgage Servicing Rights Asset And Mortgage Servicing Rights Valuation Allowance [Abstract]
Servicing Asset at Amortized Cost			$ 54,862
Cumulative effect of accounting methodology change				$ 2,296
Servicing Asset at Fair Value, Amount	$ 78,352		57,158
Additions	6,316	$ 11,761
Paydowns	(7,470)
Change in fair value model assumptions	5,715
Changes in fair value of asset	16,633
Mortgage servicing rights
Mortgage servicing rights at beginning of period	54,862	59,967	59,967
Additions			16,151
Amortization			(19,436)
Mortgage servicing rights at end of period			54,862
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance at beginning of period	(1,820)	$ (18,006)	(18,006)
Recoveries, net			16,186
Valuation allowance at end of period			(1,820)
Servicing Asset At Amortized Value Net			56,682
Fair value of mortgage servicing rights			57,259
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)	$ 6,800,404		$ 6,994,834
Mortgage servicing rights, net to servicing portfolio	1.15%		0.78%
Mortgage servicing rights expense(a)			$ 3,250