Residential Mortgage Servicing Rights (Schedule Of Information Relates To Serviced Loan Portfolio) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Transfers and Servicing [Abstract]
Balance of loans serviced for others	$ 12,914,046	$ 13,020,189
MSR as a percentage of serviced loans	1.38%	1.42%