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Credit Quality And Allowance For Credit Losses (Aging Analysis Of Loans) (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | $ 159 | $ 401
Nonaccrual Loans | 186 | 240
Current Loans | 55,419 | 52,761
Total loans | 55,764 | 53,402
30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 114 | 341
60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 36 | 37
90 Days or More |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 9 | 23
Business loans: | Commercial borrower |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 137 | 366
Nonaccrual Loans | 136 | 171
Current Loans | 51,344 | 48,740
Total loans | 51,617 | 49,277
Business loans: | Commercial borrower | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 97 | 310
Business loans: | Commercial borrower | 60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 32 | 33
Business loans: | Commercial borrower | 90 Days or More |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 8 | 23
Business loans: | Commercial borrower | Domestic |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 70 | 271
Nonaccrual Loans | 93 | 142
Current Loans | 31,582 | 30,496
Total loans | 31,745 | 30,909
Business loans: | Commercial borrower | Domestic | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 52 | 238
Business loans: | Commercial borrower | Domestic | 60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 11 | 13
Business loans: | Commercial borrower | Domestic | 90 Days or More |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 7 | 20
Business loans: | Commercial borrower | International |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 3 | 9
Nonaccrual Loans | 4 | 3
Current Loans | 1,275 | 1,185
Total loans | 1,282 | 1,197
Business loans: | Commercial borrower | International | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 3 | 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 | 26 | 2
Nonaccrual Loans | 2 | 3
Current Loans | 3,955 | 3,100
Total loans | 3,983 | 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 | 13 | 2
Business loans: | Commercial borrower | Real estate construction: | Domestic | 60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 13 | 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 | 0 | 0
Nonaccrual Loans | 0 | 0
Current Loans | 3,422 | 2,505
Total loans | 3,422 | 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 | 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 | 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 | 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 | 26 | 2
Nonaccrual Loans | 2 | 3
Current Loans | 533 | 595
Total loans | 561 | 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 | 13 | 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 | 13 | 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 | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 33 | 78
Nonaccrual Loans | 37 | 23
Current Loans | 13,781 | 13,205
Total loans | 13,851 | 13,306
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 24 | 64
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 8 | 11
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 90 Days or More |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 1 | 3
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 0 | 6
Nonaccrual Loans | 1 | 1
Current Loans | 4,982 | 4,674
Total loans | 4,983 | 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 | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 0 | 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 | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 33 | 72
Nonaccrual Loans | 36 | 22
Current Loans | 8,799 | 8,531
Total loans | 8,868 | 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 | 24 | 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 | 8 | 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 | 1 | 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 | 751 | 754
Total loans | 756 | 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 | 22 | 35
Nonaccrual Loans | 50 | 69
Current Loans | 4,075 | 4,021
Total loans | 4,147 | 4,125
Retail loans: | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 17 | 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 | 1 | 0
Retail loans: | Residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 8 | 22
Nonaccrual Loans | 33 | 53
Current Loans | 1,853 | 1,739
Total loans | 1,894 | 1,814
Retail loans: | Residential mortgage | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 8 | 22
Retail loans: | Residential mortgage | 60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 0 | 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 | 14 | 13
Nonaccrual Loans | 17 | 16
Current Loans | 2,222 | 2,282
Total loans | 2,253 | 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 | 4 | 4
Retail loans: | Consumer | 90 Days or More |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 1 | 0
Retail loans: | Consumer | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 8 | 7
Nonaccrual Loans | 17 | 15
Current Loans | 1,747 | 1,754
Total loans | 1,772 | 1,776
Retail loans: | Consumer | Home equity | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 6 | 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 | 475 | 528
Total loans | 481 | 535
Retail loans: | Consumer | Other consumer | 30-59 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 3 | 5
Retail loans: | Consumer | Other consumer | 60-89 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | 2 | 1
Retail loans: | Consumer | Other consumer | 90 Days or More |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Past Due and Still Accruing | $ 1 | $ 0

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