Derivative Financial Instruments - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Derivative [Line Items]
Percentage of periodic changes in fair value qualifies for hedge accounting treatment (in percent)	100.00%
Hedge gain to be reclassified to interest income during next twelve months, net	$ 3,800
Hedge gain to be reclassified to interest expense during next twelve months, net	14,300
Interest rate swaps on borrowings \| Cash flow hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	50,000	$ 150,000
Interest rate swaps on borrowings \| Fair value hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	1,100,000	1,100,000
Interest rate swaps, collars, and floors on loan pools \| Cash flow hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	2,000,000	1,900,000
Interest rate swaps on investment securities \| Fair value hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	927,407	927,407
Interest rate lock commitments \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	126,070	57,380
Forward mortgage loan contracts \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	202,529	88,808
Forward commitments \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount		88,800
Customer and offsetting counterparty derivative instruments \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 9,700,000	$ 6,300,000

Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified To Interest Expense During Next 12 Months, Net

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- Definition

Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified To Interest Income During Next 12 Months, Net

+ References

No definition available.

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- Definition

Percentage of periodic changes in fair value qualifies for hedge accounting.

+ References

No definition available.

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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/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: 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

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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