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GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill and Intangible Assets by Operating Segment) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Apr. 01, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 1,212,710 |  | $ 925,211
Intangible Assets | 90,176 |  | 19,183
American National |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | 287,499 | $ 287,499 | 0
Wholesale Banking |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | 845,239 |  | 639,180
Intangible Assets | 9,032 |  | 1,302
Wholesale Banking | American National |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | 209,900 | 209,900 |
Intangible Assets | 8,400 |  |
Consumer Banking |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | 362,245 |  | 286,031
Intangible Assets | 830 |  | 989
Consumer Banking | American National |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | 77,600 | $ 77,600 |
Corporate Other |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | 5,226 |  | 0
Intangible Assets | 80,314 |  | $ 16,892
Corporate Other | American National |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets | $ 76,300 |  |

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