v3.25.4
Fair Value Measurements (Schedule Of Assets And Liabilities At Fair Value Measured On A Recurring Basis) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale $ 27,560 $ 26,224    
Servicing Asset at Fair Value, Amount 970 1,007    
Derivative Asset, Estimated Fair Value 1,335 1,816    
Derivative Liability, Estimated Fair Value 1,445 2,551    
Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 27,560 26,224    
Loans held for sale 290 234    
Marketable Equity Securities carried at fair value 946 819    
Derivative Asset, Estimated Fair Value 1,335 1,816    
Derivative Liability, Estimated Fair Value 1,445 2,551    
Security Sold Short, Fair Value 19 147    
Level 1 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale 0 0    
Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2,276 2,003    
Loans held for sale 0 0    
Marketable Equity Securities carried at fair value 946 819    
Derivative Asset, Estimated Fair Value 1 13    
Derivative Liability, Estimated Fair Value 0 3    
Security Sold Short, Fair Value 19 147    
Level 2 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale 221 360    
Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 25,282 24,218    
Loans held for sale 290 234    
Marketable Equity Securities carried at fair value 0 0    
Derivative Asset, Estimated Fair Value 1,328 1,798    
Derivative Liability, Estimated Fair Value 1,445 2,548    
Security Sold Short, Fair Value 0 0    
Level 3 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale 0 0    
Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2 3    
Loans held for sale 0 0    
Marketable Equity Securities carried at fair value 0 0    
Derivative Asset, Estimated Fair Value 6 5    
Derivative Liability, Estimated Fair Value 0 0    
Security Sold Short, Fair Value 0 0    
Interest rate swaps | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 1,126 1,634    
Derivative Liability, Estimated Fair Value 1,265 2,411    
Interest rate swaps | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 0 0    
Derivative Liability, Estimated Fair Value 0 0    
Interest rate swaps | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 1,126 1,634    
Derivative Liability, Estimated Fair Value 1,265 2,411    
Interest rate swaps | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 0 0    
Derivative Liability, Estimated Fair Value 0 0    
Interest rate options | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 16 35    
Derivative Liability, Estimated Fair Value 7 30    
Interest rate options | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 0 0    
Derivative Liability, Estimated Fair Value 0 0    
Interest rate options | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 10 30    
Derivative Liability, Estimated Fair Value 7 30    
Interest rate options | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 6 5    
Derivative Liability, Estimated Fair Value 0 0    
Interest rate futures and forward commitments | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 8 8    
Derivative Liability, Estimated Fair Value 1 4    
Interest rate futures and forward commitments | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 0 0    
Derivative Liability, Estimated Fair Value 0 0    
Interest rate futures and forward commitments | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 8 8    
Derivative Liability, Estimated Fair Value 1 4    
Interest rate futures and forward commitments | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 0 0    
Derivative Liability, Estimated Fair Value 0 0    
Other Contracts [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 185 139    
Derivative Liability, Estimated Fair Value 172 106    
Other Contracts [Member] | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 1 13    
Derivative Liability, Estimated Fair Value 0 3    
Other Contracts [Member] | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 184 126    
Derivative Liability, Estimated Fair Value 172 103    
Other Contracts [Member] | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Estimated Fair Value 0 0    
Derivative Liability, Estimated Fair Value 0 0    
U.S. Treasury securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2,276 2,003    
U.S. Treasury securities | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2,276 2,003    
U.S. Treasury securities | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2,276 2,003    
U.S. Treasury securities | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
U.S. Treasury securities | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Federal agency securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 543 444    
Federal agency securities | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 543 444    
Federal agency securities | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Federal agency securities | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 543 444    
Federal agency securities | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Obligations of states and political subdivisions        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2 2    
Obligations of states and political subdivisions | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2 2    
Obligations of states and political subdivisions | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Obligations of states and political subdivisions | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2 2    
Obligations of states and political subdivisions | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Residential agency        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 18,387 18,945    
Residential agency | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 18,387 18,945    
Residential agency | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Residential agency | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 18,387 18,945    
Residential agency | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Commercial agency        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 5,829 4,090    
Commercial agency | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 5,829 4,090    
Commercial agency | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Commercial agency | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 5,829 4,090    
Commercial agency | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Commercial non-agency        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 82 82    
Commercial non-agency | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 82 82    
Commercial non-agency | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Commercial non-agency | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 82 82    
Commercial non-agency | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Corporate and other debt securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 441 658    
Corporate and other debt securities | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 441 658    
Corporate and other debt securities | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 0 0    
Corporate and other debt securities | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 439 655    
Corporate and other debt securities | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt securities available for sale 2 3    
Residential Mortgage        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 970 1,007 $ 906 $ 812
Residential Mortgage | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 970 1,007    
Residential Mortgage | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 0 0    
Residential Mortgage | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 0 0    
Residential Mortgage | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 970 1,007    
Commercial Real Estate        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 93 97 $ 81 $ 78
Commercial Real Estate | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount   97    
Commercial Real Estate | Level 1 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 0 0    
Commercial Real Estate | Level 2 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 0 0    
Commercial Real Estate | Level 3 [Member] | Recurring Fair Value Measurements        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount $ 93 $ 97