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Loans and Related Allowance for Credit Losses (Analysis of Loan Portfolio) (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Total loans | [1] | $ 318,416 | $ 326,025
Percentage of total loans, past due |  | 100.00% | 100.00%
Accrued interest on loan portfolio |  | $ 1,400 | $ 1,200
Unearned income, unamortized deferred fees and costs on originated loans, and premiums or discounts on purchased loans |  | 800 | 900
Collateral Dependent |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,100 | 1,300
Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 1,287 | $ 1,490
Percentage of total loans, past due |  | 0.40% | 0.46%
Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 314,407 | $ 321,904
Percentage of total loans, past due |  | 98.74% | 98.73%
30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 607 | $ 747
Percentage of total loans, past due |  | 0.19% | 0.23%
60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 253 | $ 261
Percentage of total loans, past due |  | 0.08% | 0.08%
90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 427 | $ 482
Percentage of total loans, past due |  | 0.13% | 0.15%
Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 2,123 | $ 1,985
Percentage of total loans, past due |  | 0.67% | 0.61%
Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | $ 599 | $ 646
Percentage of total loans, nonaccrual, past due |  | 0.19% | 0.20%
Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 216,432 | $ 225,049
Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 253 | 380
Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 214,968 | 223,811
Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 111 | 208
Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 40 | 35
Total commercial | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 102 | 137
Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,211 | 858
Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 101,984 | 100,976
Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,034 | 1,110
Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 99,439 | 98,093
Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 496 | 539
Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 213 | 226
Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 325 | 345
Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 912 | 1,127
Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 599 | 646
Commercial and industrial | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 174,163 | 182,219
Commercial and industrial | Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 218 | 333
Commercial and industrial | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 173,487 | 181,223
Commercial and industrial | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 84 | 169
Commercial and industrial | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 32 | 27
Commercial and industrial | Total commercial | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 102 | 137
Commercial and industrial | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 458 | 663
Commercial real estate | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 35,776 | 36,316
Commercial real estate | Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4 | 23
Commercial real estate | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 35,049 | 36,104
Commercial real estate | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 2 | 19
Commercial real estate | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 2 | 4
Commercial real estate | Total commercial | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  |  |
Commercial real estate | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 723 | 189
Equipment lease financing | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,493 | 6,514
Equipment lease financing | Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 31 | 24
Equipment lease financing | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,432 | 6,484
Equipment lease financing | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25 | 20
Equipment lease financing | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6 | 4
Equipment lease financing | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 30 | 6
Residential real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 47,359 | 45,889
Residential real estate | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 652 | 693
Residential real estate | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 47,359 | 45,889
Residential real estate | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 542 | 592
Residential real estate | Total consumer | Financial Asset, Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 300 | 300
Residential real estate | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 45,958 | 44,306
Residential real estate | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 257 | 281
Residential real estate | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 103 | 112
Residential real estate | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 182 | 199
Residential real estate | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 330 | 424
Residential real estate | Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 529 | 567
Home equity |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 26,159 | 25,983
Home equity | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 26,159 | 25,983
Home equity | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 81 | 73
Home equity | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,562 | 25,305
Home equity | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 59 | 53
Home equity | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 22 | 20
Home equity | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 446 | 526
Home equity | Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 70 | 79
Automobile | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 14,940 | 14,836
Automobile | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 108 | 138
Automobile | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 14,718 | 14,543
Automobile | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 83 | 106
Automobile | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 19 | 25
Automobile | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6 | 7
Automobile | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 114 | 155
Credit card | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 7,060 | 7,069
Credit card | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 168 | 155
Credit card | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,881 | 6,906
Credit card | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 50 | 50
Credit card | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 38 | 35
Credit card | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 80 | 70
Credit card | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 11 | 8
Education |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 2,020 | 2,173
Education | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 2,020 | 2,173
Education | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 102 | 115
Education | Total consumer | Financial Asset, Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 100 | 100
Education | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,918 | 2,058
Education | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 32 | 34
Education | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 22 | 22
Education | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 48 | 59
Other consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,446 | 5,026
Other consumer | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,446 | 5,026
Other consumer | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 33 | 37
Other consumer | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,402 | 4,975
Other consumer | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 15 | 15
Other consumer | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 9 | 12
Other consumer | Total consumer | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 9 | 10
Other consumer | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 11 | $ 14
[1] | Our consolidated assets included the following for which we have elected the fair value option: Loans held for sale of $0.9 billion, Loans held for investment of $1.2 billion and Other assets of $0.1 billion at September 30, 2023. Comparable amounts at December 31, 2022 were $0.9 billion, $1.3 billion and $0.1 billion, respectively.

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