Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (7,705)	$ (8,133)	$ (35,968)	$ (13,453)
Foreign currency derivatives | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	558	524	982	995
Interest rate lock commitments | Interest rate contracts | Interest rate commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	1,810	(25)	18,481	1,391
Interest rate forward sales commitments | Interest rate contracts | Interest rate commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	(9,250)	(4,681)	(40,302)	(9,408)
Interest rate swaps | Interest rate contracts | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (823)	$ (3,951)	$ (15,129)	$ (6,431)