Derivative and Hedging Activities Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Balance Sheet Recording of Fair Value Hedge [Line Items]
Carrying amount excluded for foreign currency loans	$ 223,000	$ 421,000
Derivative Financial Instruments, Liabilities [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(1,129,143)	(1,138,921)
Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	20,857	11,079
Long-Term Debt [Member] | Derivative Financial Instruments, Liabilities [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(542,963)	(548,634)
Long-Term Debt [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	7,037	1,366
Federal Home Loan Bank Advances [Member] | Derivative Financial Instruments, Liabilities [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(586,180)	(590,287)
Federal Home Loan Bank Advances [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	$ 13,820	$ 9,713