INVESTMENT SECURITIES (Narrative) (Details) |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2025
USD ($)
security
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Dec. 31, 2024
USD ($)
security
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Dec. 31, 2023
USD ($)
|
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| Schedule of Held-to-maturity Securities [Line Items] | |||
| Accrued interest receivable | $ 64,000,000 | $ 60,000,000 | |
| Amortized cost | 19,220,000,000 | 20,270,000,000 | |
| Unrealized loss unamortized over the life of security | 1,600,000,000 | 1,800,000,000 | |
| Unrealized loss unamortized over the life of security, after tax | $ 1,200,000,000 | $ 1,400,000,000 | |
| Number of AFS investment securities in an unrealized loss position | security | 2,037 | 2,534 | |
| Available-for-sale, gross gains | $ 0 | $ 0 | $ 72,000,000 |
| Available-for-sale, gross losses | 0 | 0 | $ 72,000,000 |
| Allowance for credit loss on HTM securities (less than) | 1,000,000 | ||
| Asset Pledged as Collateral | |||
| Schedule of Held-to-maturity Securities [Line Items] | |||
| Amortized cost | $ 17,500,000,000 | $ 17,900,000,000 | |
| X | ||||||||||
- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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| X | ||||||||||
- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Debt Securities, Held-To-Maturity, Transfer In, Accumulated Unrecognized Loss No definition available.
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- Definition Debt Securities, Held-to-Maturity, Unrealized Loss, Unamortized, After Tax No definition available.
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- Definition Debt Securities, Maturity, Allocated And Single Maturity Date, Amortized Cost No definition available.
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- Details
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