INVESTMENT SECURITIES AND OTHER SECURITIES - Narrative (Details) - USD ($) $ in Billions |
Mar. 31, 2024 |
Dec. 31, 2023 |
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| Asset Pledged as Collateral | ||
| Investment Securities [Line Items] | ||
| Investment securities pledged | $ 36.2 | $ 35.1 |
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- Definition [Line Items] for Investment Securities [Table] No definition available.
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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