Residential Mortgage Servicing Rights (Key Assumptions Used In Measuring The Fair Value Of MSR) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Transfers and Servicing [Abstract]
Constant prepayment rate	12.75%	18.48%	13.33%
Discount rate	9.57%	9.72%	9.75%
Weighted average life (years)	5 years 10 months 24 days	4 years 10 months 24 days	6 years