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DERIVATIVES - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) entity | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) entity | Sep. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) entity | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 20,062,151 |  | $ 20,062,151 |  |  | $ 19,339,867 |  |
Number of counterparties | entity | 6 |  | 6 |  |  | 6 |  |
Derivative liabilities | $ 274,218 |  | $ 274,218 |  |  | $ 263,131 |  |
Derivative Liability, Fair Value of Collateral, net of restricted cash | 30,100 |  | 30,100 |  |  | 116,200 |  |
Derivative Liability, Fair Value of Collateral | 46,700 |  | 46,700 |  |  | 137,800 |  |
Restricted Cash | 16,500 |  | 16,500 |  |  | 21,600 |  |
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax | 2,322 | $ (1,824) | 2,322 | $ (1,824) | $ (794) | $ 3,755 | $ (331) | $ 0
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net | 700 |  | 700 |  |  |  |  |
Client derivative fees | 1,160 | 1,612 | 3,173 | 4,444 |  |  |  |
Available-for-sale Securities, Gross Realized Losses | $ 1,000 | $ 0 | $ 6,900 | $ 400 |  |  |  |
Foreign Exchange |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Number of counterparties | entity | 4 |  | 4 |  |  | 5 |  |
Credit Risk Contract [Member] |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 219,300 |  | $ 219,300 |  |  | $ 232,500 |  |
Credit Risk Derivative Liabilities, at Fair Value | 100 |  | 100 |  |  | 100 |  |
Interest Rate Lock Commitments [Member] |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount | 38,800 |  | 38,800 |  |  | 25,200 |  |
Other Credit Derivatives [Member] |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount | 40,800 |  | 40,800 |  |  | 25,500 |  |
Credit Risk Derivative Liabilities, at Fair Value | 300 |  | 300 |  |  | 300 |  |
Other Contract-Mortgage |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 104,500 |  | $ 104,500 |  |  | 109,200 |  |
Commodity |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Number of counterparties | entity | 1 |  | 1 |  |  |  |  |
Derivative |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative liabilities | $ 51,100 |  | $ 51,100 |  |  | 95,700 |  |
Derivative | Foreign Exchange |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  | 7,000,000 |  |
Derivative liabilities | 4,600 |  | 4,600 |  |  | 23,900 |  |
Derivative | Commodity |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative liabilities | 200 |  | 200 |  |  |  |  |
Accrued interest and other liabilities | Derivative |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount | 2,200,000 |  | 2,200,000 |  |  | $ 2,200,000 |  |
Accrued interest and other liabilities | Derivative | Foreign Exchange |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 7,400,000 |  | $ 7,400,000 |  |  |  |  |

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