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Commitments and Credit Risk (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Other Commitments [Line Items] |  |
Commitments to originate fixed-rate mortgage loans, term | 30 days |
Outstanding letters of credit | $ 1,120,000,000 | $ 580,800,000
Term of letter of credit | 1 year | 1 year
Standby Letters of Credit |  |
Other Commitments [Line Items] |  |
Outstanding letters of credit | $ 41,600,000 | $ 54,200,000
Deferred revenue | $ 0 | $ 0
Minimum | Standby Letters of Credit |  |
Other Commitments [Line Items] |  |
Term of letter of credit | 9 months | 9 months
Maximum | Standby Letters of Credit |  |
Other Commitments [Line Items] |  |
Term of letter of credit | 15 years | 15 years
Credit Card Commitments |  |
Other Commitments [Line Items] |  |
Outstanding commitments | $ 756,900,000 | $ 738,200,000
Other Loan Commitments |  |
Other Commitments [Line Items] |  |
Outstanding commitments | 4,030,000,000.00 | 4,170,000,000
Fixed Rate Mortgage Loans |  |
Other Commitments [Line Items] |  |
Outstanding commitments | $ 17,800,000 | $ 16,600,000

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- Definition Commitments to Originate Mortgage Loans, Term + References No definition available. + Details
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- Definition Letters Of Credit Term + References No definition available. + Details
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-2 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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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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