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Loans and Related Allowance for Credit Losses (Analysis of Loan Portfolio) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Total loans | [1] | $ 326,475 | $ 326,025
Percentage of total loans, past due |  | 100.00% | 100.00%
Accrued interest on loan portfolio |  | $ 1,300 | $ 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 |  | 1,200 | 1,300
Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 1,326 | $ 1,490
Percentage of total loans, past due |  | 0.41% | 0.46%
Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 322,506 | $ 321,904
Percentage of total loans, past due |  | 98.78% | 98.73%
30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 645 | $ 747
Percentage of total loans, past due |  | 0.20% | 0.23%
60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 225 | $ 261
Percentage of total loans, past due |  | 0.07% | 0.08%
90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 456 | $ 482
Percentage of total loans, past due |  | 0.14% | 0.15%
Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 2,010 | $ 1,985
Percentage of total loans, past due |  | 0.62% | 0.61%
Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | $ 633 | $ 646
Percentage of total loans, nonaccrual, past due |  | 0.19% | 0.20%
Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 225,412 | $ 225,049
Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 338 | 380
Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 224,183 | 223,811
Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 177 | 208
Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 27 | 35
Total commercial | 90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 134 | 137
Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 891 | 858
Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 101,063 | 100,976
Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 988 | 1,110
Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 98,323 | 98,093
Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 468 | 539
Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 198 | 226
Total consumer | 90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 322 | 345
Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,119 | 1,127
Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 633 | 646
Commercial and industrial | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 182,997 | 182,219
Commercial and industrial | Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 274 | 333
Commercial and industrial | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 182,175 | 181,223
Commercial and industrial | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 119 | 169
Commercial and industrial | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 21 | 27
Commercial and industrial | Total commercial | 90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 134 | 137
Commercial and industrial | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 548 | 663
Commercial real estate | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 35,991 | 36,316
Commercial real estate | Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 26 | 23
Commercial real estate | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 35,628 | 36,104
Commercial real estate | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25 | 19
Commercial real estate | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1 | 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 |  | 337 | 189
Equipment lease financing | Total commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,424 | 6,514
Equipment lease financing | Total commercial | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 38 | 24
Equipment lease financing | Total commercial | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,380 | 6,484
Equipment lease financing | Total commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 33 | 20
Equipment lease financing | Total commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 5 | 4
Equipment lease financing | Total commercial | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6 | 6
Residential real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 46,067 | 45,889
Residential real estate | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 684 | 693
Residential real estate | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 46,067 | 45,889
Residential real estate | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 521 | 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 |  | 44,558 | 44,306
Residential real estate | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 245 | 281
Residential real estate | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 98 | 112
Residential real estate | Total consumer | 90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 178 | 199
Residential real estate | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 432 | 424
Residential real estate | Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 556 | 567
Home equity |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 26,203 | 25,983
Home equity | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 26,203 | 25,983
Home equity | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 66 | 73
Home equity | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,537 | 25,305
Home equity | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 48 | 53
Home equity | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 18 | 20
Home equity | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 523 | 526
Home equity | Total consumer | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 77 | 79
Automobile | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 14,923 | 14,836
Automobile | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 102 | 138
Automobile | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 14,676 | 14,543
Automobile | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 79 | 106
Automobile | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 18 | 25
Automobile | Total consumer | 90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 5 | 7
Automobile | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 145 | 155
Credit card | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,961 | 7,069
Credit card | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 157 | 155
Credit card | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,795 | 6,906
Credit card | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 48 | 50
Credit card | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 35 | 35
Credit card | Total consumer | 90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 74 | 70
Credit card | Total consumer | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 9 | 8
Education |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 2,131 | 2,173
Education | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 2,131 | 2,173
Education | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 112 | 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 |  | 2,019 | 2,058
Education | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 35 | 34
Education | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 21 | 22
Education | Total consumer | 90 Days Or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 56 | 59
Other consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,778 | 5,026
Other consumer | Total consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,778 | 5,026
Other consumer | Total consumer | Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 30 | 37
Other consumer | Total consumer | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,738 | 4,975
Other consumer | Total consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 13 | 15
Other consumer | Total consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 8 | 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 |  | $ 10 | $ 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 $1.3 billion and Other assets of $0.1 billion at both March 31, 2023 and December 31, 2022.

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