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Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financial Assets |  |
Debt securities held to maturity | $ 749 | $ 751
Debt securities available for sale | 28,230 | 27,933
Other earning assets | 1,335 | 1,308
Derivative Assets | 97 | 105
Financial Liabilities |  |
Derivative Liabilities | 1,206 | 1,453
Fair value Discount On Loan Portfolio Amount | $ 3,900 | $ 4,500
Fair value Discount On Loan Portfolio Rate | 4.10% | 4.80%
Capital Leases Carrying Amount Excluded | $ 1,500 | $ 1,500
Carrying Amount [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 8,833 | 11,227
Debt securities held to maturity | 790 | 801
Debt securities available for sale | 28,230 | 27,933
Loans held for sale | 564 | 354
Loans (excluding leases), net of unearned income and allowance for loan losses | 95,095 | 94,044
Other earning assets | 1,335 | 1,308
Derivative Assets | 2,346 | 2,609
Financial Liabilities |  |
Derivative Liabilities | 2,852 | 3,378
Deposits with no stated maturity, Fair Value Disclosure | 120,687 | 125,971
Time deposits. fair value disclosure | 7,773 | 5,772
Short-term Borrowings | 2,000 |
Long-term Borrowings | 2,307 | 2,284
Loan commitments and letters of credit | 156 | 153
Estimate of Fair Value [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 8,833 | 11,227
Debt securities held to maturity | 749 | 751
Debt securities available for sale | 28,230 | 27,933
Loans held for sale | 564 | 354
Loans (excluding leases), net of unearned income and allowance for loan losses | 91,198 | 89,540
Other earning assets | 1,335 | 1,308
Derivative Assets | 2,346 | 2,609
Financial Liabilities |  |
Derivative Liabilities | 2,852 | 3,378
Deposits with no stated maturity, Fair Value Disclosure | 120,687 | 125,971
Time deposits. fair value disclosure | 7,668 | 5,697
Short-term Borrowings | 2,000 |
Long-term Borrowings | 2,301 | 2,376
Loan commitments and letters of credit | 156 | 153
Level 1 [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 8,833 | 11,227
Debt securities held to maturity | 0 | 0
Debt securities available for sale | 1,205 | 1,187
Loans held for sale | 0 | 0
Loans (excluding leases), net of unearned income and allowance for loan losses | 0 | 0
Other earning assets | 650 | 529
Derivative Assets | 0 | 3
Financial Liabilities |  |
Derivative Liabilities | 2 | 2
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
Level 2 [Member] |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Debt securities held to maturity | 749 | 751
Debt securities available for sale | 27,023 | 26,744
Loans held for sale | 545 | 335
Loans (excluding leases), net of unearned income and allowance for loan losses | 0 | 0
Other earning assets | 685 | 779
Derivative Assets | 2,337 | 2,603
Financial Liabilities |  |
Derivative Liabilities | 2,849 | 3,375
Deposits with no stated maturity, Fair Value Disclosure | 120,687 | 125,971
Time deposits. fair value disclosure | 7,668 | 5,697
Short-term Borrowings | 2,000 |
Long-term Borrowings | 2,300 | 2,375
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 | 2
Loans held for sale | 19 | 19
Loans (excluding leases), net of unearned income and allowance for loan losses | 91,198 | 89,540
Other earning assets | 0 | 0
Derivative Assets | 9 | 3
Financial Liabilities |  |
Derivative Liabilities | 1 | 1
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 | $ 156 | $ 153

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI https://asc.fasb.org/subtopic&trid=2196772 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References No definition available. + Details
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