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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, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 127 |  | $ 119 |  | $ 194 |  | $ 193
Percent of Total Class |  | 0.25% |  | 0.23% |  | 0.38% |  | 0.37%
Weighted-Average Interest Rate Reduction |  | (2.05%) |  | 1.31% |  | (2.11%) |  | (1.34%)
Weighted-Average Term Extension (in months) |  | 23 months |  | 12 months |  | 21 months |  | 13 months
Term Extension |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [1] | $ 106 |  | $ 108 |  | $ 172 |  | $ 173
Interest Rate Reduction |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 1 |  | 8 |  | 2 |  | 9
Combination |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [2] | 20 |  | 3 |  | 20 |  | 11
Business loans: |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 118 |  | $ 118 |  | $ 184 |  | $ 190
Percent of Total Class |  | 0.25% |  | 0.25% |  | 0.39% |  | 0.40%
Weighted-Average Interest Rate Reduction |  | (2.97%) |  | 1.03% |  | (2.97%) |  | (1.06%)
Weighted-Average Term Extension (in months) |  | 16 months |  | 12 months |  | 17 months |  | 12 months
Business loans: | Term Extension |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [1] | $ 106 |  | $ 108 |  | $ 172 |  | $ 173
Business loans: | Term Extension | International |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [1] |  |  | 8 |  |  |  | 9
Business loans: | Interest Rate Reduction |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 |  | 7 |  | 0 |  | 7
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 | [2] | $ 12 |  | 3 |  | $ 12 |  | 10
Business loans: | Combination | International |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [2] |  |  | $ 0 |  |  |  | $ 0
Business loans: | Commercial |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction |  | 0.00% |  | 1.03% |  | 0.00% |  | (1.06%)
Weighted-Average Term Extension (in months) |  | 16 months |  | 13 months |  | 16 months |  | 12 months
Business loans: | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 97 |  | $ 101 |  | $ 122 |  | $ 166
Percent of Total Class |  | 0.36% |  | 0.38% |  | 0.45% |  | 0.61%
Business loans: | Commercial | International |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  |  |  | $ 8 |  |  |  | $ 9
Percent of Total Class |  |  |  | 0.71% |  |  |  | 0.84%
Weighted-Average Interest Rate Reduction |  |  |  |  |  |  |  | 0.00%
Weighted-Average Term Extension (in months) |  |  |  | 8 months |  |  |  | 9 months
Business loans: | Commercial | Commercial mortgage: |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction |  | 0.00% |  | 0.00% |  | 0.00% |  | 0.00%
Weighted-Average Term Extension (in months) |  | 14 months |  | 7 months |  | 20 months |  | 9 months
Business loans: | Commercial | Commercial mortgage: | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 9 |  | $ 9 |  | $ 50 |  | $ 15
Percent of Total Class |  | 0.06% |  | 0.06% |  | 0.34% |  | 0.10%
Business loans: | Commercial | Commercial mortgage: | Other business lines |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction | [3] | 0.00% |  | 0.00% |  | 0.00% |  | 0.00%
Weighted-Average Term Extension (in months) |  | 18 months |  | 7 months |  | 20 months | [3] | 9 months
Business loans: | Commercial | Commercial mortgage: | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 3 | [3] | $ 9 | [3] | $ 10 | [3] | $ 15
Percent of Total Class | [3] | 0.04% |  | 0.10% |  | 0.12% |  | 0.16%
Business loans: | Commercial | Commercial mortgage: | Commercial |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction |  | 0.00% |  |  |  | 0.00% |  |
Weighted-Average Term Extension (in months) |  | 12 months |  |  |  | 20 months |  |
Business loans: | Commercial | Commercial mortgage: | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 6 |  |  |  | $ 40 |  |
Percent of Total Class |  | 0.10% |  |  |  | 0.64% |  |
Business loans: | Commercial | Real estate construction |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction |  |  |  |  |  | 2.97% |  |
Weighted-Average Term Extension (in months) |  |  |  |  |  | 18 months |  |
Business loans: | Commercial | Real estate construction | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 12 |  |  |  | $ 12 |  |
Percent of Total Class |  | 0.33% |  |  |  | 0.33% |  |
Business loans: | Commercial | Real estate construction | Other business lines |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction |  | (2.97%) |  |  |  | (2.97%) |  |
Business loans: | Commercial | Real estate construction | Commercial |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Term Extension (in months) |  | 18 months |  |  |  | 18 months |  |
Business loans: | Commercial | Real estate construction | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 12 |  |  |  | $ 12 |  |
Percent of Total Class |  | 0.36% |  |  |  | 0.36% |  |
Business loans: | Commercial | Term Extension | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [1] | $ 97 |  | $ 91 |  | $ 122 |  | $ 149
Business loans: | Commercial | Term Extension | Commercial mortgage: | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [1] | 9 |  | 9 |  | 50 |  | 15
Business loans: | Commercial | Term Extension | Commercial mortgage: | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [1],[3] | 3 |  | 9 |  | 10 |  | 15
Business loans: | Commercial | Term Extension | Commercial mortgage: | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 6 |  |  |  | 40 |  |
Business loans: | Commercial | Term Extension | Real estate construction | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 |  |  |  | 0 |  |
Business loans: | Commercial | Term Extension | Real estate construction | Commercial | 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 |  | 7 |  | 0 |  | 7
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 |  | 0 |  | 0 |  | 0
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [3] | 0 |  | 0 |  | 0 |  | 0
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 |  |  |  | 0 |  |
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 | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 |  |  |  | 0 |  |
Business loans: | Commercial | Combination | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [2] | 0 |  | 3 |  | 0 |  | 10
Business loans: | Commercial | Combination | Commercial mortgage: | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [2] | 0 |  | 0 |  | 0 |  | 0
Business loans: | Commercial | Combination | Commercial mortgage: | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total | [2],[3] | 0 |  | 0 |  | 0 |  | 0
Business loans: | Commercial | Combination | Commercial mortgage: | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 |  |  |  | 0 |  |
Business loans: | Commercial | Combination | Real estate construction | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 12 |  |  |  | 12 |  |
Business loans: | Commercial | Combination | Real estate construction | Commercial | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 12 |  |  |  | 12 |  |
Retail loans: |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 9 |  | $ 1 |  | $ 10 |  | $ 3
Percent of Total Class |  | 0.21% |  | 0.03% |  | 0.24% |  | 0.08%
Retail loans: | Residential mortgage |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 8 |  |  |  | $ 8 |  |
Percent of Total Class |  | 0.39% |  |  |  | 0.39% |  |
Weighted-Average Interest Rate Reduction |  |  |  |  |  | (0.38%) |  |
Weighted-Average Term Extension (in months) |  |  |  |  |  | 120 months |  |
Retail loans: | Term Extension |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 0 | [1] | $ 0 |  | $ 0 | [1] | $ 0
Retail loans: | Term Extension | Residential mortgage |  |  |  |  |  |  |  |
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 |  | 2 |  |
Retail loans: | Interest Rate Reduction | Residential mortgage |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 |  |  |  | 0 |  |
Retail loans: | Combination |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 8 | [2] | 0 |  | 8 | [2] | 1
Retail loans: | Combination | Residential mortgage |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 8 |  |  |  | 8 |  |
Retail loans: | Payment Delay |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  | 2
Retail loans: | Consumer |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 1 |  | $ 1 |  | $ 2 |  | $ 3
Percent of Total Class |  | 0.05% |  | 0.05% |  | 0.10% |  | 0.15%
Weighted-Average Interest Rate Reduction |  | 0.83% |  | 4.17% |  | 1.11% |  | 3.54%
Weighted-Average Term Extension (in months) |  | 120 months |  |  |  | 120 months |  | 118 months
Retail loans: | Consumer | Home equity |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction |  | (4.26%) |  | (4.17%) |  | (3.73%) |  | (3.54%)
Weighted-Average Term Extension (in months) |  |  |  |  |  |  |  | 118 months
Retail loans: | Consumer | Home equity | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 1 |  | $ 1 |  | $ 2 |  | $ 3
Percent of Total Class |  | 0.06% |  | 0.07% |  | 0.13% |  | 0.19%
Retail loans: | Consumer | Consumer Loan |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Weighted-Average Interest Rate Reduction |  | 4.26% |  | 4.17% |  | 3.73% |  | 3.54%
Weighted-Average Term Extension (in months) |  |  |  |  |  |  |  | 118 months
Retail loans: | Consumer | Term Extension |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 0 | [1] | $ 0 |  | $ 0 | [1] | $ 0
Retail loans: | Consumer | Term Extension | Home equity | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 | [1] | 0 |  | 0 | [1] | 0
Retail loans: | Consumer | Interest Rate Reduction |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 1 |  | 1 |  | 2 |  |
Retail loans: | Consumer | Interest Rate Reduction | Home equity | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 1 |  |  |  | 2 |  |
Retail loans: | Consumer | Combination |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | 0 | [2] | 0 |  | 0 | [2] | 1
Retail loans: | Consumer | Combination | Home equity | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  | $ 0 | [2] | 0 |  | $ 0 | [2] | 1
Retail loans: | Consumer | Payment Delay |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  | 2
Retail loans: | Consumer | Payment Delay | Home equity | Other business lines | Domestic |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |  |
Total |  |  |  | $ 1 |  |  |  | $ 2
[1] | Represents loan balances where terms were extended or payments were delayed by a more than an insignificant time period, typically more than 180 days, at or above contractual interest rates.
[2] | Relates to FDMs where more than one type of modification was made. For the three- and six-month periods ended June 30, 2025 and 2024, this primarily related to modifications where the interest rate was reduced and the term was extended. (c)Primarily loans to real estate developers.
[3] | Primarily loans secured by owner-occupied real estate.

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