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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 | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 75 | $ 140
Percent of Total Class | 0.14% | 0.26%
Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 63 | $ 100
Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 21
Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 5 | 6
Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 7 | 13
Business loans: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total |  | $ 137
Percent of Total Class | 0.15% | 0.28%
Business loans: | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 63 | $ 99
Business loans: | Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 21
Business loans: | Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 4 | 5
Business loans: | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 6 | 12
Business loans: | Commercial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 73 |
Business loans: | Commercial | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 58 | $ 113
Percent of Total Class | 0.20% | 0.39%
Business loans: | Commercial | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 7 | $ 16
Percent of Total Class | 0.05% | 0.12%
Business loans: | Commercial | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 7 | $ 16
Percent of Total Class | 0.08% | 0.18%
Business loans: | Commercial | Real estate construction: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 8 | $ 8
Percent of Total Class | 0.17% | 0.17%
Business loans: | Commercial | Real estate construction: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 8 | $ 8
Percent of Total Class | 1.44% | 1.44%
Business loans: | Commercial | Term Extension | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 54 | $ 87
Business loans: | Commercial | Term Extension | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 4
Business loans: | Commercial | Term Extension | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 4
Business loans: | Commercial | Term Extension | Real estate construction: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 8 | 8
Business loans: | Commercial | Term Extension | Real estate construction: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 8 | 8
Business loans: | Commercial | Payment Delay | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 21
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: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Commercial | Payment Delay | Real estate construction: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Commercial | Payment Delay | Real estate construction: | 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 | 4 | 4
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 1
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 1
Business loans: | Commercial | Interest Rate Reduction | Real estate construction: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Commercial | Interest Rate Reduction | Real estate construction: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
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 | 6 | 11
Business loans: | Commercial | Combination | Commercial mortgage: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 6 | 11
Business loans: | Commercial | Combination | Real estate construction: | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Business loans: | Commercial | Combination | Real estate construction: | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Retail loans: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 2 | $ 3
Percent of Total Class | 0.05% | 0.07%
Retail loans: | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 0 | $ 1
Retail loans: | Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Retail loans: | Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 1
Retail loans: | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 1
Retail loans: | Consumer |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 2 | $ 3
Percent of Total Class | 0.09% | 0.13%
Retail loans: | Consumer | Home equity | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 2 | $ 3
Percent of Total Class | 0.11% | 0.15%
Retail loans: | Consumer | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 0 | $ 1
Retail loans: | Consumer | Term Extension | Home equity | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 1
Retail loans: | Consumer | Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Retail loans: | Consumer | Payment Delay | Home equity | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 0 | 0
Retail loans: | Consumer | Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 1
Retail loans: | Consumer | Interest Rate Reduction | Home equity | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 1
Retail loans: | Consumer | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | 1 | 1
Retail loans: | Consumer | Combination | Home equity | Other business lines | Domestic |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total | $ 1 | $ 1

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