Derivatives - Schedule Of The Net Gains (Losses) Recognized On The Company’s Consolidated Statement of Income Related To Derivatives Not Designated as Hedging Instruments (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	$ 51,766	$ 55,454	$ 49,815
Interest rate contracts | Customer derivative income, net of mark-to-market adjustments
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	(3,142)	549	(2,989)
Foreign exchange contracts | Foreign exchange income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	52,295	54,073	52,817
Credit contracts | Customer derivative income, net of mark-to-market adjustments
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	(15)	0	(1)
Equity contracts | Lending and loan servicing fees
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	283	(97)	13
Equity contracts | Other investment income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	1,385	0	0
Commodity contracts | Customer derivative income, net of mark-to-market adjustments
Derivative Instruments, Gain (Loss) [Line Items]
Net gains	$ 960	$ 929	$ (25)