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BUSINESS COMBINATIONS - Schedule of Business Acquisitions - SVBB Acquisition (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Mar. 27, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Liabilities |  |  |  |
Gain on acquisition, before income taxes |  | $ 0 | $ 9,808 | $ 431
SVBB |  |  |  |
Purchase price consideration |  |  |  |
Purchase Money Note | $ 35,808 |  |  |
Value Appreciation Instrument | 500 |  |  |
Purchase price consideration | 36,308 |  |  |
Assets |  |  |  |
Cash and due from banks | 1,310 |  |  |
Interest-earning deposits at banks | 34,001 |  |  |
Investment securities available for sale | 385 |  |  |
Loans and leases, net of the initial PCD ALLL | 68,468 |  |  |
Affordable housing tax credit and other unconsolidated investments | 1,273 |  |  |
Premises and equipment | 308 |  |  |
Other assets | 1,564 |  |  |
Total assets acquired | 107,539 |  |  |
Liabilities |  |  |  |
Deposits | 56,014 |  |  |
Borrowings | 10 |  |  |
Deferred tax liabilities | 3,364 |  | 3,360 |
Other liabilities | 2,035 |  |  |
Total liabilities assumed | 61,423 |  |  |
Fair value of net assets acquired | 46,116 |  |  |
Gain on acquisition, after income taxes | 9,808 |  | $ 9,810 |
Gain on acquisition, before income taxes | 13,172 |  |  |
Book value of net assets acquired | 52,520 |  |  |
Business combination asset acquired, discount | 16,450 |  |  |
Purchase money note, fair value discount | 264 |  |  |
SVBB | Core deposit intangible |  |  |  |
Assets |  |  |  |
Core deposit intangibles | $ 230 |  |  |

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