v3.26.1
Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Financial Assets    
Debt securities held to maturity $ 5,374 $ 5,584
Other earning assets 1,635 1,703
Financial Liabilities    
Fair value Discount On Loan Portfolio Amount $ (2,200) $ (2,000)
Fair value Discount On Loan Portfolio Rate 2.30% 2.10%
Carrying Amount [Member]    
Financial Assets    
Cash and cash equivalents $ 11,143 $ 10,907
Debt securities held to maturity 5,434 5,606
Loans held for sale 128 221
Loans (excluding leases), net of unearned income and allowance for loan losses 96,399 94,081
Other earning assets 776 757
Financial Liabilities    
Deposits with no stated maturity, Fair Value Disclosure 118,772 117,240
Time deposits. fair value disclosure 13,108 13,888
Short-term Borrowings 3,200 750
Long-term Borrowings 3,137 4,134
Loan commitments and letters of credit 154 164
Estimate of Fair Value [Member]    
Financial Assets    
Cash and cash equivalents 11,143 10,907
Debt securities held to maturity 5,374 5,584
Loans held for sale 128 221
Loans (excluding leases), net of unearned income and allowance for loan losses 94,184 92,119
Other earning assets 776 757
Financial Liabilities    
Deposits with no stated maturity, Fair Value Disclosure 118,772 117,240
Time deposits. fair value disclosure 13,089 13,874
Short-term Borrowings 3,200 750
Long-term Borrowings 3,242 4,309
Loan commitments and letters of credit 154 164
Level 1 [Member]    
Financial Assets    
Cash and cash equivalents 11,143 10,907
Debt securities held to maturity 0 0
Loans held for sale 0 0
Loans (excluding leases), net of unearned income and allowance for loan losses 0 0
Other earning assets 0 0
Financial Liabilities    
Deposits with no stated maturity, Fair Value Disclosure 0 0
Time deposits. fair value disclosure 0 0
Short-term Borrowings 0 0
Long-term Borrowings 0 0
Loan commitments and letters of credit 0 0
Level 2 [Member]    
Financial Assets    
Cash and cash equivalents 0 0
Debt securities held to maturity 5,374 5,584
Loans held for sale 126 221
Loans (excluding leases), net of unearned income and allowance for loan losses 0 0
Other earning assets 776 757
Financial Liabilities    
Deposits with no stated maturity, Fair Value Disclosure 118,772 117,240
Time deposits. fair value disclosure 13,089 13,874
Short-term Borrowings 3,200 750
Long-term Borrowings 3,241 4,308
Loan commitments and letters of credit 0 0
Level 3 [Member]    
Financial Assets    
Cash and cash equivalents 0 0
Debt securities held to maturity 0 0
Loans held for sale 2 0
Loans (excluding leases), net of unearned income and allowance for loan losses 94,184 92,119
Other earning assets 0 0
Financial Liabilities    
Deposits with no stated maturity, Fair Value Disclosure 0 0
Time deposits. fair value disclosure 0 0
Short-term Borrowings 0 0
Long-term Borrowings 1 1
Loan commitments and letters of credit $ 154 $ 164