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Credit Quality And Allowance For Credit Losses (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Loan interest receivable | $ 202 |  | $ 202 |  | $ 120
Financing Receivable, Nonaccrual, Interest Income | 3 | $ 4 | 7 | $ 8 |
Foreclosed property |  |  |  |  | 1
Retail loans secured by residential real estate in process of foreclosure |  |  |  |  | 0
Commitments to lend additional funds to TDR borrowers | $ 1 |  | $ 1 |  | $ 0
Principal Deferrals |  |  |  |  |
Minimum period loan terms were extended | 90 days | 90 days | 90 days | 90 days |
Subsequent default during period | $ 6 |  | $ 6 |  |
Interest Rate Reductions |  |  |  |  |
Minimum period loan terms were extended | 90 days | 90 days | 90 days | 90 days |
Subsequent default during period | $ 0 |  | $ 0 |  |

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- Definition Days that a principal or interest payment is past due to be defined as a subsequent default + References No definition available. + Details
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- Definition Loan interest receivable + References No definition available. + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524 + Details
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- Definition Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5162-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4437-111522 + Details
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- Definition Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554 + Details
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