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Credit Quality And Allowance For Credit Losses (Aging Analysis Of Loans) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | $ 188 | $ 401
Nonaccrual Loans |  | 221 | 240
Current Loans |  | 54,517 | 52,761
Total loans |  | 54,926 | 53,402
30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 124 | 341
60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 44 | 37
90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 20 | 23
Business loans: | Commercial borrower |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 169 | 366
Nonaccrual Loans |  | 164 | 171
Current Loans |  | 50,455 | 48,740
Total loans |  | 50,788 | 49,277
Business loans: | Commercial borrower | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 109 | 310
Business loans: | Commercial borrower | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 40 | 33
Business loans: | Commercial borrower | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 20 | 23
Business loans: | Commercial borrower | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 48 | 271
Nonaccrual Loans |  | 134 | 142
Current Loans |  | 31,448 | 30,496
Total loans |  | 31,630 | 30,909
Business loans: | Commercial borrower | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 20 | 238
Business loans: | Commercial borrower | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 19 | 13
Business loans: | Commercial borrower | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 9 | 20
Business loans: | Commercial borrower | International |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 8 | 9
Nonaccrual Loans |  | 3 | 3
Current Loans |  | 1,222 | 1,185
Total loans |  | 1,233 | 1,197
Business loans: | Commercial borrower | International | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 8 | 0
Business loans: | Commercial borrower | International | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 9
Business loans: | Commercial borrower | International | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 2
Nonaccrual Loans |  | 3 | 3
Current Loans |  | 3,564 | 3,100
Total loans |  | 3,567 | 3,105
Business loans: | Commercial borrower | Real estate construction: | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 2
Business loans: | Commercial borrower | Real estate construction: | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Nonaccrual Loans | [1] | 0 | 0
Current Loans | [1] | 2,946 | 2,505
Total loans | [1] | 2,946 | 2,505
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 0 | 2
Nonaccrual Loans | [2] | 3 | 3
Current Loans | [2] | 618 | 595
Total loans | [2] | 621 | 600
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 0 | 2
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 108 | 78
Nonaccrual Loans |  | 24 | 23
Current Loans |  | 13,460 | 13,205
Total loans |  | 13,592 | 13,306
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 76 | 64
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 21 | 11
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 11 | 3
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 66 | 6
Nonaccrual Loans | [1] | 1 | 1
Current Loans | [1] | 4,796 | 4,674
Total loans | [1] | 4,863 | 4,681
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 46 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 20 | 6
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 42 | 72
Nonaccrual Loans | [2] | 23 | 22
Current Loans | [2] | 8,664 | 8,531
Total loans | [2] | 8,729 | 8,625
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 30 | 64
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 1 | 5
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 11 | 3
Business loans: | Commercial borrower | Lease financing | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 5 | 6
Nonaccrual Loans |  | 0 | 0
Current Loans |  | 761 | 754
Total loans |  | 766 | 760
Business loans: | Commercial borrower | Lease financing | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 5 | 6
Business loans: | Commercial borrower | Lease financing | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | Lease financing | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Retail loans: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 19 | 35
Nonaccrual Loans |  | 57 | 69
Current Loans |  | 4,062 | 4,021
Total loans |  | 4,138 | 4,125
Retail loans: | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 15 | 31
Retail loans: | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 4 | 4
Retail loans: | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Retail loans: | Residential mortgage |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 7 | 22
Nonaccrual Loans |  | 39 | 53
Current Loans |  | 1,776 | 1,739
Total loans |  | 1,822 | 1,814
Retail loans: | Residential mortgage | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 6 | 22
Retail loans: | Residential mortgage | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 1 | 0
Retail loans: | Residential mortgage | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Retail loans: | Consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 12 | 13
Nonaccrual Loans |  | 18 | 16
Current Loans |  | 2,286 | 2,282
Total loans |  | 2,316 | 2,311
Retail loans: | Consumer | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 9 | 9
Retail loans: | Consumer | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 3 | 4
Retail loans: | Consumer | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Retail loans: | Consumer | Home equity |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 6 | 7
Nonaccrual Loans |  | 18 | 15
Current Loans |  | 1,760 | 1,754
Total loans |  | 1,784 | 1,776
Retail loans: | Consumer | Home equity | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 4 | 4
Retail loans: | Consumer | Home equity | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 2 | 3
Retail loans: | Consumer | Home equity | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Retail loans: | Consumer | Other consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 6 | 6
Nonaccrual Loans |  | 0 | 1
Current Loans |  | 526 | 528
Total loans |  | 532 | 535
Retail loans: | Consumer | Other consumer | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 5 | 5
Retail loans: | Consumer | Other consumer | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 1 | 1
Retail loans: | Consumer | Other consumer | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | $ 0 | $ 0
[1] | Primarily loans to real estate developers.
[2] | Primarily loans secured by owner-occupied real estate.

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