v3.25.2
Derivative And Credit-Related Financial Instruments (Schedule Of Net Gains Recognized In Income On Customer-Initiated Derivatives) (Details) - Customer-initiated and other activities - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]        
Net derivative gain recognized in income $ 27 $ 21 $ 45 $ 40
Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Net derivative gain recognized in income 6 3 10 8
Energy contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Net derivative gain recognized in income 7 5 10 8
Foreign exchange contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Net derivative gain recognized in income $ 14 $ 13 $ 25 $ 24