Residential Mortgage Servicing Rights (Schedule Of Information Relates To Serviced Loan Portfolio) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Transfers and Servicing [Abstract]
Balance of loans serviced for others	$ 8,175,664	$ 13,020,189	$ 12,755,671
MSR as a percentage of serviced loans	1.34%	1.42%	0.97%