Quarterly report [Sections 13 or 15(d)]

ACQUISITIONS (Narrative) (Details)

v3.25.3
ACQUISITIONS (Narrative) (Details)
$ in Thousands, shares in Millions
3 Months Ended 9 Months Ended
Apr. 01, 2025
USD ($)
item
shares
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Business Acquisition [Line Items]                
Purchase price consideration     $ 1,275,247   $ 505,746      
Goodwill   $ 1,726,386       $ 1,726,386   $ 1,214,053
Merger-related costs   34,812   $ 1,353   118,652 $ 33,005  
American National                
Business Acquisition [Line Items]                
Goodwill               $ 288,842
Accretion expense             5,000  
Merger-related costs       1,100     26,900  
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 $ 512,333 512,333       512,333    
Goodwill, measurement period adjustments   15,400            
Accretion expense       $ 21,200   20,800 $ 63,700  
Merger-related costs   26,900       94,800    
Sandy Spring | Wholesale Banking                
Business Acquisition [Line Items]                
Goodwill   399,600       399,600    
Sandy Spring | Consumer Banking                
Business Acquisition [Line Items]                
Goodwill   $ 112,700       $ 112,700