Outstanding Loans and Leases and Allowance for Credit Losses - Nonperforming, Narrative (Details) - USD ($) $ in Millions |
Mar. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Financing Receivable, Past Due [Line Items] | ||
| Nonperforming loans and leases | $ 6,083 | $ 5,975 |
| Commercial | ||
| Financing Receivable, Past Due [Line Items] | ||
| Nonperforming loans and leases | 3,470 | 3,328 |
| Consumer Portfolio Segment | ||
| Financing Receivable, Past Due [Line Items] | ||
| Nonperforming loans and leases | 2,613 | 2,647 |
| Consumer Portfolio Segment | Residential Mortgage | ||
| Financing Receivable, Past Due [Line Items] | ||
| Nonperforming loans and leases | 2,036 | 2,052 |
| Federal National Mortgage Association Certificates and Obligations (FNMA) and Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) | Residential Mortgage | ||
| Financing Receivable, Past Due [Line Items] | ||
| Long-term credit protection agreements, amount covered | $ 7,800 | $ 8,000 |
| X | ||||||||||
- Definition Long Term Credit Protection Agreements, Amount Covered No definition available.
|
| X | ||||||||||
- Definition Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|