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Loans and Related Allowance for Credit Losses (Analysis of Loan Portfolio) (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Total loans | [1] | $ 321,381 | $ 321,508
Percentage of total loans, past due |  | 100.00% | 100.00%
Accrued interest on loan portfolio |  | $ 1,400 | $ 1,500
Unearned income, unamortized deferred fees and costs on originated loans, and premiums or discounts on purchased loans |  | 900 | 1,000
Collateral Dependent |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,900 | 1,400
Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 316,978 | $ 317,359
Percentage of total loans, past due |  | 98.63% | 98.71%
30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 614 | $ 685
Percentage of total loans, past due |  | 0.19% | 0.21%
60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 252 | $ 270
Percentage of total loans, past due |  | 0.08% | 0.08%
90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 409 | $ 429
Percentage of total loans, past due |  | 0.13% | 0.13%
Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 1,275 | $ 1,384
Percentage of total loans, past due |  | 0.40% | 0.43%
Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 2,578 | $ 2,180
Percentage of total loans, past due |  | 0.80% | 0.68%
Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | $ 550 | $ 585
Percentage of total loans, nonaccrual, past due |  | 0.17% | 0.18%
Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 220,721 | $ 219,558
Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 218,706 | 217,961
Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 137 | 152
Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 52 | 53
Total commercial | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 97 | 85
Total commercial | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 286 | 290
Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,729 | 1,307
Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 100,660 | 101,950
Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 98,272 | 99,398
Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 477 | 533
Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 200 | 217
Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 312 | 344
Total consumer | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 989 | 1,094
Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 849 | 873
Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 550 | 585
Commercial and industrial | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 178,891 | 177,580
Commercial and industrial | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 177,926 | 176,796
Commercial and industrial | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 106 | 104
Commercial and industrial | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 40 | 45
Commercial and industrial | Total commercial | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 97 | 76
Commercial and industrial | Total commercial | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 243 | 225
Commercial and industrial | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 722 | 559
Commercial real estate | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 35,104 | 35,436
Commercial real estate | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 34,102 | 34,685
Commercial real estate | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 9 | 7
Commercial real estate | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  |  |
Commercial real estate | Total commercial | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  |  | 9
Commercial real estate | Total commercial | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 9 | 16
Commercial real estate | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 993 | 735
Equipment lease financing | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,726 | 6,542
Equipment lease financing | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,678 | 6,480
Equipment lease financing | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 22 | 41
Equipment lease financing | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 12 | 8
Equipment lease financing | Total commercial | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 34 | 49
Equipment lease financing | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 14 | 13
Residential real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 46,972 | 47,544
Residential real estate | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 624 | 653
Residential real estate | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 46,972 | 47,544
Residential real estate | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 45,719 | 46,159
Residential real estate | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 238 | 282
Residential real estate | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 85 | 101
Residential real estate | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 179 | 192
Residential real estate | Total consumer | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 502 | 575
Residential real estate | Total consumer | Total Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 200 | 300
Residential real estate | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 265 | 294
Residential real estate | Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 486 | 516
Home equity |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,970 | 26,150
Home equity | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,970 | 26,150
Home equity | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,341 | 25,533
Home equity | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 65 | 63
Home equity | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 27 | 27
Home equity | Total consumer | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 92 | 90
Home equity | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 473 | 458
Home equity | Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 64 | 69
Automobile | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 15,135 | 14,860
Automobile | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 14,937 | 14,638
Automobile | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 81 | 91
Automobile | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 21 | 20
Automobile | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6 | 7
Automobile | Total consumer | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 108 | 118
Automobile | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 90 | 104
Credit card | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,827 | 7,180
Credit card | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,639 | 6,991
Credit card | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 55 | 54
Credit card | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 39 | 39
Credit card | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 79 | 86
Credit card | Total consumer | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 173 | 179
Credit card | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 15 | 10
Education |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,693 | 1,945
Education | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,693 | 1,945
Education | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,611 | 1,850
Education | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 26 | 27
Education | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 16 | 19
Education | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 40 | 49
Education | Total consumer | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 82 | 95
Education | Total consumer | Total Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 100 | 100
Other consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,063 | 4,271
Other consumer | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,063 | 4,271
Other consumer | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,025 | 4,227
Other consumer | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 12 | 16
Other consumer | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 12 | 11
Other consumer | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 8 | 10
Other consumer | Total consumer | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 32 | 37
Other consumer | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 6 | $ 7
[1] | Our consolidated assets included the following for which we have elected the fair value option: Loans held for sale of $0.7 billion, Loans held for investment of $1.2 billion and Other assets of $0.1 billion at September 30, 2024. Comparable amounts at December 31, 2023 were $0.7 billion, $1.2 billion and $0.1 billion, respectively.

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