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DERIVATIVES - Additional Information (Detail) $ in Thousands | Dec. 31, 2020 USD ($) entity | Dec. 31, 2019 USD ($) entity
--- | --- | ---
Derivative [Line Items] |  |
Number of counterparties | entity | 20 | 18
Derivative Asset | $ 272,499 | $ 112,607
Derivative Assets (Liabilities), at Fair Value, Net | (107) |
Derivative Liability | 272,606 | 112,616
Derivative, Notional Amount | $ 11,875,690 | $ 7,586,618
Foreign Exchange [Member] |  |
Derivative [Line Items] |  |
Number of counterparties | entity | 6 | 6
Credit Risk Contract [Member] |  |
Derivative [Line Items] |  |
Outstanding liability from counterparty contracts | $ 300 | $ 200
Derivative, Notional Amount | 242,400 | 216,200
Interest Rate Lock Commitments [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 114,200 | 33,400
Other Credit Derivatives [Member] |  |
Derivative [Line Items] |  |
Outstanding liability from counterparty contracts |  | 900
Derivative, Notional Amount | 112,600 | 37,800
Credit Risk Derivative Assets, at Fair Value | 2,700 |
Derivative [Member] | Other Liabilities [Member] |  |
Derivative [Line Items] |  |
Derivative Liability | 182,300 | 67,500
Derivative, Notional Amount | 2,300,000 | 1,900,000
Derivative [Member] | Other Liabilities [Member] | Foreign Exchange [Member] |  |
Derivative [Line Items] |  |
Derivative Liability | 33,100 | 18,300
Derivative, Notional Amount | $ 3,600,000 | $ 1,900,000

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