Annual report [Section 13 and 15(d), not S-K Item 405]

ACQUISITIONS (Narrative) (Details)

v3.25.4
ACQUISITIONS (Narrative) (Details)
$ in Thousands, shares in Millions
 6 Months Ended 12 Months Ended
Apr. 01, 2025
USD ($)
item
shares
Apr. 01, 2024
USD ($)
item
shares
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Business Acquisition [Line Items]            
Purchase price consideration       $ 1,275,247 $ 505,746  
Goodwill     $ 1,733,287 1,733,287 1,214,053  
Merger-related costs       157,278 40,018 $ 2,995
American National and Sandy Spring            
Business Acquisition [Line Items]            
Merger-related costs         33,500  
American National            
Business Acquisition [Line Items]            
Conversion ratio   1.35        
Additional shares issued | shares   14.3        
Purchase price consideration   $ 505,473        
Number of branches acquired | item   26        
Goodwill   $ 288,842 288,800 288,800 288,842  
Accretion expense         5,000 19,700
Merger-related costs           $ 2,900
American National | Wholesale Banking            
Business Acquisition [Line Items]            
Goodwill     210,800 210,800    
American National | Consumer Banking            
Business Acquisition [Line Items]            
Goodwill     78,000 78,000    
Sandy Spring            
Business Acquisition [Line Items]            
Conversion ratio 0.9          
Additional shares issued | shares 41.0          
Purchase price consideration $ 1,275,969          
Number of branches acquired | item 50          
Goodwill $ 519,234   519,234 519,234    
Goodwill, measurement period adjustments     22,400      
Accretion expense       21,000 $ 85,800  
Merger-related costs       124,600    
Sandy Spring | Wholesale Banking            
Business Acquisition [Line Items]            
Goodwill     404,900 404,900    
Sandy Spring | Consumer Banking            
Business Acquisition [Line Items]            
Goodwill     $ 114,300 $ 114,300