Guarantees (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2023	Dec. 31, 2022
Guarantor Obligations [Line Items]
Derivative Liabilities	[1]	$ 58,718	$ 54,984
Notional amount of underlying interest rate swaps associated with risk participation agreements		5,027,916	$ 3,742,521
Financial Standby Letter Of Credit [Member]
Guarantor Obligations [Line Items]
Standby letters of credit, net liability		3,400
Contractual amount of letters of credit, guaranteed maximum potential future payments		594,200
Risk Participation Agreement [Member] | Indirect Guarantee Of Indebtedness [Member]
Guarantor Obligations [Line Items]
Derivative Liabilities		44
Notional amount of underlying interest rate swaps associated with risk participation agreements		$ 446,200
Minimum [Member] | Risk Participation Agreement [Member]
Guarantor Obligations [Line Items]
Term, in years		2 years
Maximum [Member] | Risk Participation Agreement [Member]
Guarantor Obligations [Line Items]
Term, in years		15 years

[1] * The fair value of each class of derivative is shown in Note 11.