Commitments, Contingencies, Guarantees and Others - Unfunded Lending Commitments: Contractual Amount and Carrying Value (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Loss Contingencies [Line Items] | ||
| Total unfunded lending commitments, contractual amount | $ 762,491 | $ 729,602 |
| Off-balance sheet lending commitment, carrying value | 119 | 114 |
| Credit Card: | ||
| Loss Contingencies [Line Items] | ||
| Credit car lines, contractual amount | 706,966 | 678,375 |
| Other loan commitments | ||
| Loss Contingencies [Line Items] | ||
| Credit car lines, contractual amount | 53,658 | 49,555 |
| Off-balance sheet lending commitment, carrying value | 79 | 82 |
| Advised line of credit | 9,900 | 7,800 |
| Letter of credit | ||
| Loss Contingencies [Line Items] | ||
| Standby letters of credit and commercial letters of credit, contractual amount | 1,867 | 1,672 |
| Off-balance sheet lending commitment, carrying value | $ 40 | $ 32 |
| X | ||||||||||
- Definition The contractual amount of line of credit that drawings are subject to our satisfactory evaluation of the customer and are cancelable upon proper notice. No definition available.
|
| X | ||||||||||
- Definition Letter of credit issued contractual amount and unused commitment to extend credit No definition available.
|
| X | ||||||||||
- Definition The carrying value of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the allowance for lending-related commitments, deferred revenue and the guarantee liability. No definition available.
|
| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| 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 | ||||||||||
- Definition Unused amount of commitments to extend credit to customers. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|