Derivatives - Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	$ 13,387	$ 7,914
Interest rate contracts | Customer derivative income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	484	(2,484)
Foreign exchange contracts | Foreign exchange income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	12,780	10,442
Credit contracts | Customer derivative income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	(5)	(5)
Equity contracts | Lending fees
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	(6)	(45)
Commodity contracts | Customer derivative income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	$ 134	$ 6