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Credit Quality And Allowance For Credit Losses (Loan Modifications Made to Borrowers Experiencing Financial Difficulty) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 52 | $ 66
Percent of Total Class | 0.09% | 0.12%
Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 27 | $ 35
Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 22 | 22
Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 2 | 2
Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 7
Business loans: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 52 | $ 66
Percent of Total Class | 0.10% | 0.13%
Business loans: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Percent of Total Class | 0.10% | 0.10%
Business loans: | International |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 1 | $ 1
Business loans: | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 27 | 35
Business loans: | Term Extension | International |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 22 | 22
Business loans: | Payment Delay | International |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 2 | 2
Business loans: | Interest Rate Reduction | International |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 7
Business loans: | Combination | International |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 1
Business loans: | Commercial | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 47 | $ 53
Percent of Total Class | 0.15% | 0.17%
Business loans: | Commercial | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 4 | $ 12
Percent of Total Class | 0.03% | 0.08%
Business loans: | Commercial | Commercial mortgage: | Commercial | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total |  | $ 1
Percent of Total Class |  | 0.02%
Business loans: | Commercial | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 4 | $ 11
Percent of Total Class | 0.05% | 0.11%
Business loans: | Commercial | Term Extension | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 25 | $ 30
Business loans: | Commercial | Term Extension | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 2 | 5
Business loans: | Commercial | Term Extension | Commercial mortgage: | Commercial | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total |  | 1
Business loans: | Commercial | Term Extension | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 2 | 4
Business loans: | Commercial | Payment Delay | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 22 | 22
Business loans: | Commercial | Payment Delay | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Commercial | Payment Delay | Commercial mortgage: | Commercial | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total |  | 0
Business loans: | Commercial | Payment Delay | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Commercial | Interest Rate Reduction | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 2 | 2
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Commercial | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total |  | 0
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 2 | 2
Business loans: | Commercial | Combination | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 1
Business loans: | Commercial | Combination | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 5
Business loans: | Commercial | Combination | Commercial mortgage: | Commercial | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total |  | 0
Business loans: | Commercial | Combination | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 0 | $ 5

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- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 + Details
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