INVESTMENT SECURITIES - Schedule of Other Investments (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items] | ||
| FHLB and FRB stock | $ 1,067 | $ 508 |
| LIHTC investments | 1,886 | 1,034 |
| Equity securities | 1,034 | 1,020 |
| Interest-bearing deposits with an affiliate bank | 5 | 5 |
| Total | 3,992 | 2,567 |
| Equity securities, cost | 97 | 23 |
| Off-balance Securitization Trusts | ||
| Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items] | ||
| Equity securities | $ 6 | $ 4 |
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- Definition Low Income Housing Tax Credit Investment No definition available.
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- Definition Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment in the future. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investments classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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- Details
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