Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (1,761)	$ 27,505
Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ 30	$ 701
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income
Interest rate lock commitments | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ 105	$ (5,494)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Residential mortgage banking revenue, net	Residential mortgage banking revenue, net
Future | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ 2,650	$ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Residential mortgage banking revenue, net	Residential mortgage banking revenue, net
Interest rate forward sales commitments | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (1,003)	$ 25,251
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Residential mortgage banking revenue, net	Residential mortgage banking revenue, net
Interest rate swaps | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (3,543)	$ 7,047
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income