Business Segments and Revenue from Contracts with Customers - Additional Information (Details) $ in Millions |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2026
USD ($)
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Jun. 30, 2025
USD ($)
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Jun. 30, 2026
USD ($)
segment
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Jun. 30, 2025
USD ($)
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| Segment Reporting [Line Items] | ||||
| Number of operating segments | segment | 3 | |||
| Marketing | $ 1,661 | $ 1,345 | $ 3,158 | $ 2,547 |
| Credit card marketing expense | $ 1,400 | $ 1,100 | 2,700 | $ 2,200 |
| Minimum | Commercial Banking | ||||
| Segment Reporting [Line Items] | ||||
| Customer net revenue range | 20 | |||
| Maximum | Commercial Banking | ||||
| Segment Reporting [Line Items] | ||||
| Customer net revenue range | $ 2,000 | |||
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- Definition Credit Card Marketing Expense No definition available.
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- Definition Customer Net Revenue Range No definition available.
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- Definition Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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