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Commitments and Contingencies - Financial instruments with off-Balance Sheet credit risk (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Commitments to extend credit | Credit card lines |  |
Commitments and contingencies |  |
Unused commitments to extend credit | $ 5,720,469 | $ 5,853,990
Commitments to extend credit | Commercial and construction lines of credit |  |
Commitments and contingencies |  |
Unused commitments to extend credit | 4,374,553 | 4,425,825
Commitments to extend credit | Other consumer unused credit commitments |  |
Commitments and contingencies |  |
Unused commitments to extend credit | 250,571 | 250,271
Commercial letters of credit |  |
Commitments and contingencies |  |
Unused commitments to extend credit | 3,083 | 3,351
Standby letters of credit |  |
Commitments and contingencies |  |
Unused commitments to extend credit | 53,089 | 27,868
Commitments to originate or fund mortgage loans |  |
Commitments and contingencies |  |
Unused commitments to extend credit | $ 25,104 | $ 45,170

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Unused amount of commitments to extend credit to customers. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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