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Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financial Assets |  |
Debt securities held to maturity | $ 2,759 | $ 716
Debt securities available for sale | 28,698 | 28,104
Other earning assets | 1,625 | 1,417
Derivative Asset, Estimated Fair Value | 1,640 | 2,105
Financial Liabilities |  |
Fair value Discount On Loan Portfolio Amount | $ (2,800) | $ (3,800)
Fair value Discount On Loan Portfolio Rate | 3.00% | 4.00%
Capital Leases Carrying Amount Excluded | $ 1,800 | $ 1,700
Derivative Liability, Estimated Fair Value | 1,808 | 2,691
Carrying Amount [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 10,521 | 6,801
Debt securities held to maturity | 2,787 | 754
Debt securities available for sale | 28,698 | 28,104
Loans held for sale | 522 | 400
Loans (excluding leases), net of unearned income and allowance for loan losses | 93,359 | 95,141
Other earning assets | 1,625 | 1,417
Derivative Asset, Estimated Fair Value | 1,640 | 2,105
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 110,692 | 112,816
Time deposits. fair value disclosure | 15,684 | 14,972
Short-term Borrowings | 1,500 |
Long-term Borrowings | 6,016 | 2,330
Loan commitments and letters of credit | 154 | 156
Derivative Liability, Estimated Fair Value | 1,808 | 2,691
Estimate of Fair Value [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 10,521 | 6,801
Debt securities held to maturity | 2,759 | 716
Debt securities available for sale | 28,698 | 28,104
Loans held for sale | 522 | 400
Loans (excluding leases), net of unearned income and allowance for loan losses | 90,562 | 91,352
Other earning assets | 1,625 | 1,417
Derivative Asset, Estimated Fair Value | 1,640 | 2,105
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 110,692 | 112,816
Time deposits. fair value disclosure | 15,673 | 14,905
Short-term Borrowings | 1,500 |
Long-term Borrowings | 6,147 | 2,319
Loan commitments and letters of credit | 154 | 156
Derivative Liability, Estimated Fair Value | 1,808 | 2,691
Level 1 [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 10,521 | 6,801
Debt securities held to maturity | 0 | 0
Debt securities available for sale | 2,046 | 1,223
Loans held for sale | 0 | 0
Loans (excluding leases), net of unearned income and allowance for loan losses | 0 | 0
Other earning assets | 804 | 813
Derivative Asset, Estimated Fair Value | 12 | 0
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 0 | 0
Time deposits. fair value disclosure | 0 | 0
Short-term Borrowings | 0 |
Long-term Borrowings | 0 | 0
Loan commitments and letters of credit | 0 | 0
Derivative Liability, Estimated Fair Value | 0 | 0
Level 2 [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Debt securities held to maturity | 2,759 | 716
Debt securities available for sale | 26,649 | 26,880
Loans held for sale | 509 | 397
Loans (excluding leases), net of unearned income and allowance for loan losses | 0 | 0
Other earning assets | 821 | 604
Derivative Asset, Estimated Fair Value | 1,617 | 2,101
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 110,692 | 112,816
Time deposits. fair value disclosure | 15,673 | 14,905
Short-term Borrowings | 1,500 |
Long-term Borrowings | 6,146 | 2,318
Loan commitments and letters of credit | 0 | 0
Derivative Liability, Estimated Fair Value | 1,808 | 2,690
Level 3 [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Debt securities held to maturity | 0 | 0
Debt securities available for sale | 3 | 1
Loans held for sale | 13 | 3
Loans (excluding leases), net of unearned income and allowance for loan losses | 90,562 | 91,352
Other earning assets | 0 | 0
Derivative Asset, Estimated Fair Value | 11 | 4
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 0 | 0
Time deposits. fair value disclosure | 0 | 0
Short-term Borrowings | 0 |
Long-term Borrowings | 1 | 1
Loan commitments and letters of credit | 154 | 156
Derivative Liability, Estimated Fair Value | $ 0 | $ 1

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