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Derivatives - Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands | 3 Months Ended
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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

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