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Loans and Leases - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Receivables [Abstract] |  |  |  |  |
Payment performance period threshold |  |  | 6 months |  |
Loans 90 days or greater past due and still accruing | $ 0 |  | $ 0 |  | $ 0
Residential mortgage loans in process of foreclosure | 29,000,000 |  | 29,000,000 |  | 41,000,000
Loans modified to borrowers experiencing financial difficulty | 8,000,000 | $ 3,000,000 | 26,000,000 | $ 32,000,000 |
Loans with government guarantees | $ 354,000,000 |  | $ 354,000,000 |  | $ 360,000,000

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- Definition Financing Receivable, With Government Guaranty + References No definition available. + Details
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- Definition Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. 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 16 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
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- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 35 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-35 + Details
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