v3.26.1
Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Income Statement Related Disclosures    
Net interest income (expense) $ 933 $ 365
Provision for credit losses 76 17
Net interest income after provision for credit losses 857 348
Non-interest revenue:    
Core banking fees 91 32
Wealth management revenue 84 33
Total loan sales and servicing 10 6
Capital markets income 18 3
Other non-interest revenue 81 23
Total non-interest revenue 284 97
Non-interest expense:    
Salaries and other personnel expense 396 172
Net occupancy, equipment, and software expense 97 42
Other operating expense 459 61
Total non-interest expense 952 275
Income before income taxes 189 170
Merger-related expense 275 0
Synovus Financial Corp    
Non-interest expense:    
Merger-related expense 275  
Operating Segments | Banking    
Income Statement Related Disclosures    
Net interest income (expense) 757 349
Provision for credit losses 74 16
Net interest income after provision for credit losses 682 333
Non-interest revenue:    
Core banking fees 81 25
Wealth management revenue 4 5
Total loan sales and servicing 10 6
Capital markets income 18 3
Other non-interest revenue 3 2
Total non-interest revenue 116 41
Non-interest expense:    
Salaries and other personnel expense 208 111
Net occupancy, equipment, and software expense 40 18
Other operating expense 55 21
Total non-interest expense 303 151
Income before income taxes 495 223
Operating Segments | Wealth    
Income Statement Related Disclosures    
Net interest income (expense) 8 2
Provision for credit losses 0 0
Net interest income after provision for credit losses 8 2
Non-interest revenue:    
Core banking fees 0 0
Wealth management revenue 80 28
Total loan sales and servicing 0 0
Capital markets income 0 0
Other non-interest revenue 0 0
Total non-interest revenue 81 28
Non-interest expense:    
Salaries and other personnel expense 51 19
Net occupancy, equipment, and software expense 2 0
Other operating expense 9 1
Total non-interest expense 62 20
Income before income taxes 28 10
Treasury and Corporate Other    
Income Statement Related Disclosures    
Net interest income (expense) 167 14
Provision for credit losses 1 1
Net interest income after provision for credit losses 166 13
Non-interest revenue:    
Core banking fees 10 7
Wealth management revenue 0 0
Total loan sales and servicing 0 0
Capital markets income 0 0
Other non-interest revenue 78 21
Total non-interest revenue 88 28
Non-interest expense:    
Salaries and other personnel expense 137 42
Net occupancy, equipment, and software expense 56 24
Other operating expense 394 39
Total non-interest expense 587 104
Income before income taxes (333) $ (63)
Merger-related expense 272  
Treasury and Corporate Other | Synovus Financial Corp    
Non-interest expense:    
Merger-related expense $ 275