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Allowance for Credit Losses - Schedule of Activity in the Allowance for Credit Losses by Loan Portfolio (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Allowance for credit losses at beginning of period | $ 436,603 | $ 427,265
Other adjustments | 4 | (31)
Charge-offs | (17,449) | (23,841)
Recoveries | 4,809 | 2,091
Provision for credit losses - Other | 23,974 |
Provision for credit losses | 24,000 | 21,691
Allowance for credit losses at period end | 447,941 | 427,175
Individually measured | 32,192 | 15,841
Collectively measured | 415,749 | 411,334
Individually measured | 121,269 | 89,368
Collectively measured | 48,460,600 | 42,996,973
Loans held at fair value | 126,521 | 144,365
Commercial |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Allowance for credit losses at beginning of period | 175,837 | 169,604
Other adjustments | 0 | 0
Charge-offs | (9,722) | (11,215)
Recoveries | 929 | 479
Provision for credit losses - Other | 34,139 |
Provision for credit losses |  | 7,650
Allowance for credit losses at period end | 201,183 | 166,518
Individually measured | 25,278 | 13,989
Collectively measured | 175,905 | 152,529
Individually measured | 70,560 | 31,740
Collectively measured | 15,860,766 | 13,471,741
Loans held at fair value | 0 | 0
Commercial real estate |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Allowance for credit losses at beginning of period | 222,856 | 223,853
Other adjustments | 0 | 0
Charge-offs | (454) | (5,469)
Recoveries | 12 | 31
Provision for credit losses - Other | (12,404) |
Provision for credit losses |  | 7,637
Allowance for credit losses at period end | 210,010 | 226,052
Individually measured | 6,772 | 1,784
Collectively measured | 203,238 | 224,268
Individually measured | 26,187 | 39,262
Collectively measured | 12,888,714 | 11,594,175
Loans held at fair value | 0 | 0
Home Equity |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Allowance for credit losses at beginning of period | 8,943 | 7,116
Other adjustments | 0 | 0
Charge-offs | 0 | (74)
Recoveries | 216 | 29
Provision for credit losses - Other | (20) |
Provision for credit losses |  | 120
Allowance for credit losses at period end | 9,139 | 7,191
Individually measured | 85 | 0
Collectively measured | 9,054 | 7,191
Individually measured | 2,070 | 838
Collectively measured | 453,613 | 339,511
Loans held at fair value | 0 | 0
Residential Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Allowance for credit losses at beginning of period | 10,335 | 13,133
Other adjustments | 0 | 0
Charge-offs | 0 | (38)
Recoveries | 136 | 2
Provision for credit losses - Other | 181 |
Provision for credit losses |  | 604
Allowance for credit losses at period end | 10,652 | 13,701
Individually measured | 43 | 59
Collectively measured | 10,609 | 13,642
Individually measured | 22,434 | 17,509
Collectively measured | 3,536,204 | 2,728,392
Loans held at fair value | 126,521 | 144,365
Premium Finance Receivables |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Allowance for credit losses at beginning of period | 17,820 | 13,069
Other adjustments | 4 | (31)
Charge-offs | (7,126) | (6,938)
Recoveries | 3,487 | 1,527
Provision for credit losses - Other | 1,854 |
Provision for credit losses |  | 5,703
Allowance for credit losses at period end | 16,039 | 13,330
Individually measured | 0 | 0
Collectively measured | 16,039 | 13,330
Individually measured | 0 | 0
Collectively measured | 15,605,002 | 14,812,052
Loans held at fair value | 0 | 0
Consumer and Other |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Allowance for credit losses at beginning of period | 812 | 490
Other adjustments | 0 | 0
Charge-offs | (147) | (107)
Recoveries | 29 | 23
Provision for credit losses - Other | 224 |
Provision for credit losses |  | (23)
Allowance for credit losses at period end | 918 | 383
Individually measured | 14 | 9
Collectively measured | 904 | 374
Individually measured | 18 | 19
Collectively measured | 116,301 | 51,102
Loans held at fair value | $ 0 | $ 0

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of financing receivable collectively evaluated for credit loss. Excludes financing receivable individually evaluated for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.5.a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11C + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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