v3.26.3
Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) $ (8) $ 0 $ (12) $ 1
Foreign currency derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) 0 1 $ 0 $ 1
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other income Other income
Interest rate lock commitments | Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) (1) 0 $ (1) $ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other income Other income
Future | Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) (12) 0 $ (16) $ 5
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other income Other income
Interest rate forward sales commitments | Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) 2 (1) $ 2 $ (2)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Residential mortgage banking revenue, net Residential mortgage banking revenue, net
Interest rate swaps | Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) $ 3 $ 0 $ 3 $ (3)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other income Other income