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Transfers of Financial Assets - Carrying Amounts of Assets Pledged as Collateral, Borrowings and Other Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
In-substance debt defeasance | $ 0 | $ 0
Carrying amounts of the assets pledged as collateral |  |
Securities for reverse repurchase agreements | 0 | 0
Asset Pledged as Collateral |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Investment securities pledged as collateral | 3,200,000 | 2,100,000
Assets pledged as collateral | 8,297,830 | 6,181,158
Asset Pledged as Collateral | Public deposits |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Investment securities pledged as collateral | 3,000,000 | 1,900,000
Asset Pledged as Collateral | Federal Home Loan Bank |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets pledged as collateral | 3,451,070 | 2,380,042
Asset Pledged as Collateral | Federal Reserve Bank |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets pledged as collateral | 1,704,803 | 1,724,279
Asset Pledged as Collateral with Right [Member] | Public deposits |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Investment securities pledged as collateral | 2,977,693 | 1,913,369
Asset Pledged as Collateral without Right [Member] | ACH transactions |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets pledged as collateral | 133,173 | 115,038
Asset Pledged as Collateral without Right [Member] | Interest rate swaps |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets pledged as collateral | $ 31,091 | $ 48,430

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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References No definition available. + Details
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- Definition The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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