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Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative Gain (Losses) $ 0 $ 0 $ 1 $ (3)
Foreign currency derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative Gain (Losses) 1 0 $ 1 $ 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) 0 1 $ 0 $ 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) 0 5 $ 5 $ (1)
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) (2) $ (2) $ (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 $ (4) $ (3) $ (2)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other income Other income