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Commitments, Contingencies, Guarantees and Others - Unfunded Lending Commitments: Contractual Amount and Carrying Value (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Loss Contingencies [Line Items]
Total unfunded lending commitments, contractual amount	$ 471,709	$ 458,054
Off-balance sheet lending commitment, carrying value	111	103
Credit Card:
Loss Contingencies [Line Items]
Credit car lines, contractual amount	424,727	411,603
Other loan commitments
Loss Contingencies [Line Items]
Credit car lines, contractual amount	45,652	45,145
Off-balance sheet lending commitment, carrying value	78	73
Advised line of credit	6,000	6,000
Letter of credit
Loss Contingencies [Line Items]
Standby letters of credit and commercial letters of credit, contractual amount	1,330	1,306
Off-balance sheet lending commitment, carrying value	$ 33	$ 30

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.

+ References

No definition available.

+ Details

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X

- Definition

Letter of credit issued contractual amount and unused commitment to extend credit

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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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.

+ References

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- 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.

+ References

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- Definition

Unused amount of commitments to extend credit to customers.

+ References

No definition available.

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