v3.26.1
Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) $ (3) $ 0 $ (4) $ 1
Future | Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (losses) (2) 2 $ (4) $ 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) (1) 0 $ 0 $ (1)
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) $ 0 $ (2) $ 0 $ (3)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other income Other income