Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Property, Plant, and Equipment [Line Items] | ||
| Premises and equipment, net | $ 1,230 | $ 1,248 |
| Software, Internally Developed | ||
| Property, Plant, and Equipment [Line Items] | ||
| Useful life | 5 years | |
| Software, Internally Developed and Purchased | ||
| Property, Plant, and Equipment [Line Items] | ||
| Premises and equipment, net | $ 1,200 |
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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/2009/role/commonPracticeRef
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- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Useful life of property, plant, and equipment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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