Investment Securities (Investment Securities, At Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale	$ 9,136,853	$ 9,684,760
Trading securities	38,034	28,830
Equity securities with readily determinable fair values	48,359	5,723
Equity Securities without Readily Determinable Fair Value, Amount	9,083	6,978
Federal Reserve Bank Stock	35,545	35,166
Federal Home Loan Bank Stock	10,120	10,640
Private Equity Investments	184,386	176,667
Total investment securities	$ 9,462,380	$ 9,948,764