v3.26.1
Revenue from Contracts with Customers (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers $ 449 $ 425 $ 911 $ 838
Total noninterest income 706 690 1,429 1,358
Contract assets 0 0 0 0
Contract liabilities 0 0 0 0
Trust and investment services income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 154 136 302 268
Investment banking and debt placement fees        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 123 130 275 258
Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 77 73 154 142
Cards and payments income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 92 84 175 166
Other noninterest income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 3 2 5 4
Total noninterest income 215 235 437 457
Operating Segments | Consumer Bank        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 215 199 421 389
Operating Segments | Consumer Bank | Trust and investment services income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 135 118 264 231
Operating Segments | Consumer Bank | Investment banking and debt placement fees        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 0 0 0 0
Operating Segments | Consumer Bank | Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 33 35 67 68
Operating Segments | Consumer Bank | Cards and payments income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 44 44 85 86
Operating Segments | Consumer Bank | Other noninterest income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 3 2 5 4
Operating Segments | Commercial Bank        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 234 226 490 449
Operating Segments | Commercial Bank | Trust and investment services income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 19 18 38 37
Operating Segments | Commercial Bank | Investment banking and debt placement fees        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 123 130 275 258
Operating Segments | Commercial Bank | Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 44 38 87 74
Operating Segments | Commercial Bank | Cards and payments income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 48 40 90 80
Operating Segments | Commercial Bank | Other noninterest income        
Disaggregation of Revenue [Line Items]        
Total revenue from contracts with customers 0 0 0 0
Other        
Disaggregation of Revenue [Line Items]        
Total noninterest income $ 42 $ 30 $ 81 $ 63