Investment Securities (Proceeds From Sales Of Securities And Components Of Investment Securities Gains And Losses) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of debt securities, available for sale, including pending trades		$ 25,494	$ 812,176
Proceeds from sales of other investments, including pending trades		10,250	28,259
Proceeds from sale of investments, total, including pending trades		35,744	840,435
Investment securities gains (losses), net	[1]	(259)	(306)
Available-for-sale Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Losses realized on sales		(8,470)	(3,088)
Equity Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Equity Securities, FV-NI, Unrealized Gain (Loss)		142	(127)
Other Investments [Member]
Debt Securities, Available-for-sale [Line Items]
Other Securities, Gains realized on sales		969	658
Fair value other securities adjustments, net		$ 7,100	$ 2,251

[1] Available for sale debt securities, equity securities, and other securities.