Leases, Premises and Equipment - Schedule of Balance Sheet Information (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Operating Leases: | ||
| Operating lease right-of-use assets | $ 380 | $ 416 |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets |
| Operating lease liabilities | $ 427 | $ 463 |
| Operating Lease, Liability, Statement of Financial Position [Extensible List] | Operating lease liabilities | Operating lease liabilities |
| Weighted average remaining lease term | 10 years 1 month 6 days | 10 years 8 months 12 days |
| Weighted average discount rate % | 4.79% | 4.77% |
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- Definition Operating Lease, Assets And Liabilities, Lessee No definition available.
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of financial position that includes operating lease liability. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of financial position that includes operating lease right-of-use asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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