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Derivative Financial Instruments - Additional Information (Details) - USD ($) | Jun. 30, 2024 | Dec. 31, 2023
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Derivative [Line Items] |  |
Percentage of periodic changes in fair value qualifies for hedge accounting treatment (in percent) | 100.00% |
Interest Income |  |
Derivative [Line Items] |  |
Hedge gain to be reclassified during next twelve months, net | $ 6,600,000 |
Interest Expense |  |
Derivative [Line Items] |  |
Hedge gain to be reclassified during next twelve months, net | 26,500,000 |
Interest rate swaps on borrowings | Cash flow hedges | Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | 150,000,000 | $ 150,000,000
Interest rate swaps on borrowings | Fair value hedges | Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | 1,100,000,000 | 900,000,000.0
Interest rate swaps, collars, and floors on loan pools | Cash flow hedges | Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | 1,800,000,000 | 1,600,000,000
Interest rate swaps on investment securities | Fair value hedges | Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | 998,107,000 | 998,107,000
Interest rate lock commitments | Not Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | 99,131,000 | 25,151,000
Forward mortgage loan contracts | Not Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | 125,414,000 | 39,529,000
Counterparty interest rate swaps | Not Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | 6,022,198,000 | 5,954,216,000
Customer interest rate swaps | Not Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional amount | $ 6,022,198,000 | $ 5,954,216,000

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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