v3.26.1
Revenue from Contracts with Customers (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers $ 462 $ 411
Total noninterest income 723 668
Contract assets 0 0
Contract liabilities 0 0
Trust and investment services income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 148 132
Investment banking and debt placement fees    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 152 127
Services charges on deposit accounts    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 77 68
Cards and payments income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 82 82
Other noninterest income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 3 2
Total noninterest income 223 226
Operating Segments | Consumer Bank    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 206 190
Operating Segments | Consumer Bank | Trust and investment services income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 129 113
Operating Segments | Consumer Bank | Investment banking and debt placement fees    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 0 0
Operating Segments | Consumer Bank | Services charges on deposit accounts    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 34 33
Operating Segments | Consumer Bank | Cards and payments income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 40 42
Operating Segments | Consumer Bank | Other noninterest income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 3 2
Operating Segments | Commercial Bank    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 256 221
Operating Segments | Commercial Bank | Trust and investment services income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 19 19
Operating Segments | Commercial Bank | Investment banking and debt placement fees    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 152 127
Operating Segments | Commercial Bank | Services charges on deposit accounts    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 43 35
Operating Segments | Commercial Bank | Cards and payments income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 42 40
Operating Segments | Commercial Bank | Other noninterest income    
Disaggregation of Revenue [Line Items]    
Total revenue from contracts with customers 0 0
Other    
Disaggregation of Revenue [Line Items]    
Total noninterest income $ 38 $ 31