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Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financial Assets |  |
Debt securities held to maturity | $ 4,226 | $ 716
Debt securities available for sale | 26,224 | 28,104
Other earning assets | 1,616 | 1,417
Derivative Asset, Estimated Fair Value | 1,816 | 2,105
Financial Liabilities |  |
Fair value Discount On Loan Portfolio Amount | $ (3,500) | $ (3,800)
Fair value Discount On Loan Portfolio Rate | 3.80% | 4.00%
Capital Leases Carrying Amount Excluded | $ 1,700 | $ 1,700
Derivative Liability, Estimated Fair Value | 2,551 | 2,691
Carrying Amount [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 10,712 | 6,801
Debt securities held to maturity | 4,427 | 754
Debt securities available for sale | 26,224 | 28,104
Loans held for sale | 594 | 400
Loans (excluding leases), net of unearned income and allowance for loan losses | 93,424 | 95,141
Other earning assets | 1,616 | 1,417
Derivative Asset, Estimated Fair Value | 1,816 | 2,105
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 111,883 | 112,816
Time deposits. fair value disclosure | 15,720 | 14,972
Short-term Borrowings | 500 |
Long-term Borrowings | 5,993 | 2,330
Loan commitments and letters of credit | 149 | 156
Derivative Liability, Estimated Fair Value | 2,551 | 2,691
Estimate of Fair Value [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 10,712 | 6,801
Debt securities held to maturity | 4,226 | 716
Debt securities available for sale | 26,224 | 28,104
Loans held for sale | 594 | 400
Loans (excluding leases), net of unearned income and allowance for loan losses | 89,907 | 91,352
Other earning assets | 1,616 | 1,417
Derivative Asset, Estimated Fair Value | 1,816 | 2,105
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 111,883 | 112,816
Time deposits. fair value disclosure | 15,694 | 14,905
Short-term Borrowings | 500 |
Long-term Borrowings | 6,059 | 2,319
Loan commitments and letters of credit | 149 | 156
Derivative Liability, Estimated Fair Value | 2,551 | 2,691
Level 1 [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 10,712 | 6,801
Debt securities held to maturity | 0 | 0
Debt securities available for sale | 2,003 | 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 | 819 | 813
Derivative Asset, Estimated Fair Value | 13 | 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 | 3 | 0
Level 2 [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Debt securities held to maturity | 4,226 | 716
Debt securities available for sale | 24,218 | 26,880
Loans held for sale | 594 | 397
Loans (excluding leases), net of unearned income and allowance for loan losses | 0 | 0
Other earning assets | 797 | 604
Derivative Asset, Estimated Fair Value | 1,798 | 2,101
Financial Liabilities |  |
Deposits with no stated maturity, Fair Value Disclosure | 111,883 | 112,816
Time deposits. fair value disclosure | 15,694 | 14,905
Short-term Borrowings | 500 |
Long-term Borrowings | 6,058 | 2,318
Loan commitments and letters of credit | 0 | 0
Derivative Liability, Estimated Fair Value | 2,548 | 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 | 0 | 3
Loans (excluding leases), net of unearned income and allowance for loan losses | 89,907 | 91,352
Other earning assets | 0 | 0
Derivative Asset, Estimated Fair Value | 5 | 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 | 149 | 156
Derivative Liability, Estimated Fair Value | $ 0 | $ 1

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