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Loans and ACL - Loans Modified During Period That Were in Payment Default (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2026 | Jun. 30, 2025
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | $ 408 | $ 192
Renewals |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 188 | 24
Term Extensions |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 10 | 13
Interest Rate Adjustments |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 3 | 3
Capitalizations |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 13 | 5
Payment Delays |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 134 | 98
Combination - Capitalization and Term Extension |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 48 | 40
Other |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 12 | 9
Commercial: | Commercial and industrial |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 186 | 23
Commercial: | Commercial and industrial | Renewals |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 186 | 23
Commercial: | Commercial and industrial | Term Extensions |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | Commercial and industrial | Interest Rate Adjustments |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | Commercial and industrial | Capitalizations |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | Commercial and industrial | Payment Delays |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | Commercial and industrial | Combination - Capitalization and Term Extension |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | Commercial and industrial | Other |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | CRE |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 2 | 1
Commercial: | CRE | Renewals |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 2 | 1
Commercial: | CRE | Term Extensions |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | CRE | Interest Rate Adjustments |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | CRE | Capitalizations |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | CRE | Payment Delays |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | CRE | Combination - Capitalization and Term Extension |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Commercial: | CRE | Other |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Residential mortgage |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 187 | 132
Consumer: | Residential mortgage | Renewals |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Residential mortgage | Term Extensions |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 8 | 11
Consumer: | Residential mortgage | Interest Rate Adjustments |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Residential mortgage | Capitalizations |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 13 | 5
Consumer: | Residential mortgage | Payment Delays |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 109 | 69
Consumer: | Residential mortgage | Combination - Capitalization and Term Extension |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 48 | 40
Consumer: | Residential mortgage | Other |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 9 | 7
Consumer: | Indirect auto |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 29 | 32
Consumer: | Indirect auto | Renewals |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Indirect auto | Term Extensions |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 1 | 1
Consumer: | Indirect auto | Interest Rate Adjustments |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Indirect auto | Capitalizations |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Indirect auto | Payment Delays |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 25 | 29
Consumer: | Indirect auto | Combination - Capitalization and Term Extension |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Indirect auto | Other |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 3 | 2
Consumer: | Other consumer |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 1 | 1
Consumer: | Other consumer | Renewals |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Other consumer | Term Extensions |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 1 | 1
Consumer: | Other consumer | Interest Rate Adjustments |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Other consumer | Capitalizations |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Other consumer | Payment Delays |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Other consumer | Combination - Capitalization and Term Extension |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Consumer: | Other consumer | Other |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Credit card |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 3 | 3
Credit card | Renewals |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Credit card | Term Extensions |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Credit card | Interest Rate Adjustments |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 3 | 3
Credit card | Capitalizations |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Credit card | Payment Delays |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Credit card | Combination - Capitalization and Term Extension |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | 0 | 0
Credit card | Other |  |
Financing Receivable, Modified, Subsequent Default [Line Items] |  |
Loans modified, in payment default | $ 0 | $ 0

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