Quarterly report [Sections 13 or 15(d)]

SUBSEQUENT EVENTS (Narrative) (Details)

v3.25.3
SUBSEQUENT EVENTS (Narrative) (Details)
$ / shares in Units, $ in Thousands, shares in Millions
 3 Months Ended 9 Months Ended
Oct. 30, 2025
$ / shares
Apr. 01, 2025
USD ($)
shares
Sep. 30, 2025
USD ($)
$ / shares
Jun. 30, 2025
USD ($)
$ / shares
Mar. 31, 2025
$ / shares
Sep. 30, 2024
$ / shares
Jun. 30, 2024
USD ($)
$ / shares
Mar. 31, 2024
$ / shares
Sep. 30, 2025
USD ($)
$ / shares
Sep. 30, 2024
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Subsequent Event [Line Items]                      
Dividends on common stock (in dollars per share)     $ 0.34 $ 0.34 $ 0.34 $ 0.32 $ 0.32 $ 0.32 $ 1.02 $ 0.96  
Dividends on preferred stock (in dollars per share)     171.88 $ 171.88 $ 171.88 $ 171.88 $ 171.88 $ 171.88      
Common stock, par value (in dollars per share)     $ 1.33           $ 1.33   $ 1.33
Total assets | $     $ 37,072,733           $ 37,072,733   $ 24,585,323
Total deposits | $     $ 30,665,324           $ 30,665,324   $ 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) $ 0.37                    
Common Class A [Member] | O 2025 Q3 Common Dividends [Member] | Subsequent Event [Member]                      
Subsequent Event [Line Items]                      
Dividends payable, date to be paid Nov. 28, 2025                    
Dividends payable, date of record Nov. 14, 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 Q3 Preferred Dividends [Member] | Subsequent Event [Member]                      
Subsequent Event [Line Items]                      
Dividends payable, date declared Oct. 30, 2025                    
Dividends payable, date to be paid Dec. 01, 2025                    
Dividends payable, date of record Nov. 14, 2025