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Loans and Related Allowance for Credit Losses (Analysis of Loan Portfolio) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans | [1] | $ 326,025 | $ 288,372
Percentage of total loans, past due |  | 100.00% | 100.00%
Accrued interest on loan portfolio |  | $ 1,200 | $ 700
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] |  | Other | Other
Unearned income, unamortized deferred fees and costs on originated loans, and premiums or discounts on purchased loans |  | $ 900 | $ 700
Collateral Pledged |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 1,300 | 1,700
Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 1,490 | $ 1,985
Percentage of total loans, past due |  | 0.46% | 0.69%
Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 321,904 | $ 283,155
Percentage of total loans, past due |  | 98.73% | 98.19%
30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 747 | $ 1,011
Percentage of total loans, past due |  | 0.23% | 0.35%
60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 261 | $ 355
Percentage of total loans, past due |  | 0.08% | 0.12%
90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 482 | $ 619
Percentage of total loans, past due |  | 0.15% | 0.21%
Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 1,985 | $ 2,480
Percentage of total loans, past due |  | 0.61% | 0.86%
Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans |  | $ 646 | $ 752
Percentage of total loans, nonaccrual, past due |  | 0.20% | 0.26%
Residential real estate |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 45,889 | $ 39,712
Residential real estate | Government insured or guaranteed loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 693 | 811
Home equity |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 25,983 | 24,061
Education |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 2,173 | 2,533
Other consumer |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 5,026 | 5,727
Commercial |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 225,049 | 193,078
Commercial | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 380 | 537
Commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 223,811 | 191,373
Commercial | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 208 | 306
Commercial | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 35 | 98
Commercial | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 137 | 133
Commercial | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 858 | 1,168
Commercial | Commercial and industrial |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 182,219 | 152,933
Commercial | Commercial and industrial | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 333 | 439
Commercial | Commercial and industrial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 181,223 | 151,698
Commercial | Commercial and industrial | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 169 | 235
Commercial | Commercial and industrial | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 27 | 72
Commercial | Commercial and industrial | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 137 | 132
Commercial | Commercial and industrial | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 663 | 796
Commercial | Commercial real estate |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 36,316 | 34,015
Commercial | Commercial real estate | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 23 | 71
Commercial | Commercial real estate | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 36,104 | 33,580
Commercial | Commercial real estate | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 19 | 46
Commercial | Commercial real estate | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 4 | 24
Commercial | Commercial real estate | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  |  | 1
Commercial | Commercial real estate | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 189 | 364
Commercial | Equipment lease financing |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 6,514 | 6,130
Commercial | Equipment lease financing | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 24 | 27
Commercial | Equipment lease financing | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 6,484 | 6,095
Commercial | Equipment lease financing | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 20 | 25
Commercial | Equipment lease financing | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 4 | 2
Commercial | Equipment lease financing | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  |  |
Commercial | Equipment lease financing | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 6 | 8
Consumer |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 100,976 | 95,294
Consumer | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 1,110 | 1,448
Consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 98,093 | 91,782
Consumer | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 539 | 705
Consumer | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 226 | 257
Consumer | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 345 | 486
Consumer | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 1,127 | 1,312
Consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 646 | 752
Consumer | Residential real estate |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 45,889 | 39,712
Consumer | Residential real estate | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 592 | 826
Consumer | Residential real estate | Total Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 300 | 400
Consumer | Residential real estate | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 44,306 | 37,706
Consumer | Residential real estate | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 281 | 379
Consumer | Residential real estate | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 112 | 119
Consumer | Residential real estate | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 199 | 328
Consumer | Residential real estate | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 424 | 517
Consumer | Residential real estate | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 567 | 663
Consumer | Home equity |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 25,983 | 24,061
Consumer | Home equity | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 73 | 71
Consumer | Home equity | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 25,305 | 23,305
Consumer | Home equity | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 53 | 53
Consumer | Home equity | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 20 | 18
Consumer | Home equity | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  |  |
Consumer | Home equity | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 526 | 596
Consumer | Home equity | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 79 | 89
Consumer | Automobile |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 14,836 | 16,635
Consumer | Automobile | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 138 | 200
Consumer | Automobile | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 14,543 | 16,252
Consumer | Automobile | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 106 | 146
Consumer | Automobile | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 25 | 40
Consumer | Automobile | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 7 | 14
Consumer | Automobile | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 155 | 183
Consumer | Credit card |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 7,069 | 6,626
Consumer | Credit card | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 155 | 144
Consumer | Credit card | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 6,906 | 6,475
Consumer | Credit card | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 50 | 49
Consumer | Credit card | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 35 | 33
Consumer | Credit card | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 70 | 62
Consumer | Credit card | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 8 | 7
Consumer | Education |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 2,173 | 2,533
Consumer | Education | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 115 | 133
Consumer | Education | Total Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 100 | 100
Consumer | Education | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 2,058 | 2,400
Consumer | Education | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 34 | 43
Consumer | Education | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 22 | 25
Consumer | Education | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 59 | 65
Consumer | Education | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  |  |
Consumer | Other consumer |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 5,026 | 5,727
Consumer | Other consumer | Total Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 37 | 74
Consumer | Other consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 4,975 | 5,644
Consumer | Other consumer | 30-59 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 15 | 35
Consumer | Other consumer | 60-89 Days Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 12 | 22
Consumer | Other consumer | 90 Days Or More Past Due |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | 10 | 17
Consumer | Other consumer | Nonperforming Loans |  |  |
Financing Receivable. Recorded Investment, Past Due [Line Items] |  |  |
Total loans |  | $ 14 | $ 9
[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 of $1.3 billion and Other assets of $0.1 billion at December 31, 2022 and Loans held for sale of $1.9 billion, Loans of $1.5 billion and Other assets of $0.1 billion at December 31, 2021.

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