v3.26.1
Derivative Financial Instruments And Hedging Activities (Schedule Of Gains (Losses) Recognized Related To Derivatives Not Designated As Hedging Instruments) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments $ 5 $ 0 $ 35 $ 31
Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Capital markets income [Member]        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments 19 4 46 19
Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Mortgage income        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments (14) (4) (11) 12
Interest rate swaps | Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Capital markets income [Member]        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments 11 5 21 11
Interest rate swaps | Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Mortgage income        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments (10) (4) (10) 12
Interest rate options | Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Capital markets income [Member]        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments 6 13 13 21
Interest rate options | Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Mortgage income        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments (1) (1) (1) 0
Interest rate futures and forward commitments | Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Capital markets income [Member]        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments 4 5 7 8
Interest rate futures and forward commitments | Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Mortgage income        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments (3) 1 0 0
Other Contracts [Member] | Not Designated as Hedging Instrument | Income Statement Location [Axis]: us-gaap:NoninterestIncome | Capital markets income [Member]        
Derivative [Line Items]        
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments $ (2) $ (19) $ 5 $ (21)