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Derivative Instruments and Hedging Activities - Schedule of Estimated Fair Value of Derivative Instruments included in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | $ 125 | $ 168
Estimated fair value of derivative liabilities | 0 | 14,472
Not Designated as Hedging Instruments |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | 85,697 | 83,727
Estimated fair value of derivative liabilities | 120,958 | 201,917
Not Designated as Hedging Instruments | Interest rate contracts |  |
Derivative [Line Items] |  |
Notional Amount | 18,050,806 | 14,653,252
Estimated fair value of derivative assets | 84,723 | 81,099
Estimated fair value of derivative liabilities | 117,782 | 201,847
Not Designated as Hedging Instruments | Mortgage Derivatives | Mortgage derivatives - interest rate lock commitments |  |
Derivative [Line Items] |  |
Notional Amount | 51,828 | 34,649
Estimated fair value of derivative assets | 974 | 434
Estimated fair value of derivative liabilities | 0 | 0
Not Designated as Hedging Instruments | Mortgage Derivatives | Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans |  |
Derivative [Line Items] |  |
Notional Amount | 80,000 | 51,500
Estimated fair value of derivative assets | 0 | 233
Estimated fair value of derivative liabilities | 119 | 0
Not Designated as Hedging Instruments | Risk participation agreements |  |
Derivative [Line Items] |  |
Notional Amount | 1,057,038 | 924,267
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | 21 | 6
Not Designated as Hedging Instruments | Foreign exchange contracts |  |
Derivative [Line Items] |  |
Notional Amount | 134,023 | 148,805
Estimated fair value of derivative assets | 0 | 1,961
Estimated fair value of derivative liabilities | 72 | 0
Not Designated as Hedging Instruments | Visa derivative |  |
Derivative [Line Items] |  |
Notional Amount | 0 | 0
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | 2,964 | 64
Cash Flow Hedges |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | 65 | 0
Estimated fair value of derivative liabilities | 0 | 13,003
Cash Flow Hedges | Interest rate contracts |  |
Derivative [Line Items] |  |
Notional Amount | 3,850,000 | 4,350,000
Estimated fair value of derivative assets | 65 | 0
Estimated fair value of derivative liabilities | 0 | 13,003
Fair Value Hedges |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | 60 | 168
Estimated fair value of derivative liabilities | 0 | 1,469
Fair Value Hedges | Interest rate contracts |  |
Derivative [Line Items] |  |
Notional Amount | 1,652,967 | 2,102,967
Estimated fair value of derivative assets | 60 | 168
Estimated fair value of derivative liabilities | $ 0 | $ 1,469

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- Definition Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-7A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-8 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483466/210-20-50-3 + Details
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- Definition Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-7A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483466/210-20-50-3 + Details
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