v3.25.2
SUBSEQUENT EVENTS (Narrative) (Details)
$ / shares in Units, $ in Thousands, shares in Millions
 3 Months Ended 6 Months Ended
Jul. 24, 2025
$ / shares
Apr. 01, 2025
USD ($)
shares
Jun. 09, 2020
Jun. 30, 2025
USD ($)
$ / shares
Mar. 31, 2025
$ / shares
Jun. 30, 2024
USD ($)
$ / shares
Mar. 31, 2024
$ / shares
Jun. 30, 2025
USD ($)
$ / shares
Jun. 30, 2024
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Subsequent Event [Line Items]                    
Dividends on common stock (in dollars per share)       $ 0.34 $ 0.34 $ 0.32 $ 0.32 $ 0.68 $ 0.64  
Dividends on preferred stock (in dollars per share)       171.88 $ 171.88 $ 171.88 $ 171.88      
Common stock, par value (in dollars per share)       $ 1.33       $ 1.33   $ 1.33
Total assets | $       $ 37,289,371       $ 37,289,371   $ 24,585,323
Total deposits | $       30,972,175       $ 30,972,175   $ 20,397,619
Value of common stock issued in merger | $       1,275,247   $ 505,746        
Sandy Spring                    
Subsequent Event [Line Items]                    
Conversion ratio   0.9                
Additional shares issued | shares   41.0                
Value of common stock issued in merger | $   $ 1,275,969                
Common Stock [Member]                    
Subsequent Event [Line Items]                    
Value of common stock issued in merger | $       $ 54,530   $ 19,052        
Common Class A [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Dividends on common stock (in dollars per share) $ 0.34                  
Common Class A [Member] | O 2025 Q2 Common Dividends [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Dividends payable, date to be paid Aug. 18, 2025                  
Dividends payable, date of record Aug. 04, 2025                  
Depositary Shares | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Dividends on preferred stock (in dollars per share) $ 0.43                  
Series A Preferred Stock [Member]                    
Subsequent Event [Line Items]                    
Number of preferred stock represented by each depositary share     each representing a 1/400th ownership interest in a share of its Series A preferred stock              
Series A Preferred Stock [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Number of preferred stock represented by each depositary share each representing a 1/400th ownership interest in a share of Series A preferred stock.                  
Dividends on preferred stock (in dollars per share) $ 171.88                  
Series A Preferred Stock [Member] | O 2025 Q2 Preferred Dividends [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Dividends payable, date declared Jul. 24, 2025                  
Dividends payable, date to be paid Sep. 02, 2025                  
Dividends payable, date of record Aug. 18, 2025