Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill and Intangible Assets by Operating Segment) (Details)

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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