v3.19.3.a.u2
Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Financial Assets    
Debt securities held to maturity $ 1,372 $ 1,460
Debt securities available for sale 22,606 22,729
Loans held for sale 439 251
Other earning assets 1,518 1,719
Derivative Assets 335 127
Financial Liabilities    
Derivative Liabilities 47 161
Fair value Discount On Loan Portfolio Amount $ 42 $ 1,700
Fair value Discount On Loan Portfolio Rate 0.10% 2.10%
Capital Leases Carrying Amount Excluded $ 1,300 $ 1,100
Operating Leases Carrying Amount Excluded 297 369
Carrying Amount [Member]    
Financial Assets    
Cash and cash equivalents 4,114 3,538
Debt securities held to maturity 1,332 1,482
Debt securities available for sale 22,606 22,729
Loans held for sale 637 304
Loans (excluding leases), net of unearned income and allowance for loan losses 80,841 81,054
Other earning assets 1,221 1,350
Derivative Assets 669 370
Financial Liabilities    
Derivative Liabilities 242 340
Deposits 97,475 94,491
Short-term Borrowings 2,050 1,600
Long-term Borrowings 7,879 12,424
Loan commitments and letters of credit 67 79
Estimate of Fair Value [Member]    
Financial Assets    
Cash and cash equivalents 4,114 3,538
Debt securities held to maturity 1,372 1,460
Debt securities available for sale 22,606 22,729
Loans held for sale 637 304
Loans (excluding leases), net of unearned income and allowance for loan losses 80,799 79,386
Other earning assets 1,221 1,350
Derivative Assets 669 370
Financial Liabilities    
Derivative Liabilities 242 340
Deposits 97,516 94,531
Short-term Borrowings 2,050 1,600
Long-term Borrowings 8,275 12,610
Loan commitments and letters of credit 471 435
Level 1 [Member]    
Financial Assets    
Cash and cash equivalents 4,114 3,538
Debt securities held to maturity 0 0
Debt securities available for sale 182 280
Loans held for sale 0 0
Loans (excluding leases), net of unearned income and allowance for loan losses 0 0
Other earning assets 450 429
Derivative Assets 0 2
Financial Liabilities    
Derivative Liabilities 0 2
Deposits 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 1,372 1,460
Debt securities available for sale 22,422 22,444
Loans held for sale 620 287
Loans (excluding leases), net of unearned income and allowance for loan losses 0 0
Other earning assets 771 921
Derivative Assets 654 363
Financial Liabilities    
Derivative Liabilities 237 335
Deposits 97,516 94,531
Short-term Borrowings 2,050 1,600
Long-term Borrowings 7,442 12,408
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
Debt securities available for sale 2 5
Loans held for sale 17 17
Loans (excluding leases), net of unearned income and allowance for loan losses 80,799 79,386
Other earning assets 0 0
Derivative Assets 15 5
Financial Liabilities    
Derivative Liabilities 5 3
Deposits 0 0
Short-term Borrowings 0 0
Long-term Borrowings 833 202
Loan commitments and letters of credit $ 471 $ 435