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Loans and Related Allowance for Credit Losses (Analysis of Loan Portfolio) (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
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Financing Receivable, Past Due [Line Items] |  |  |
Total loans | [1] | $ 326,340 | $ 316,467
Percentage of total loans, past due |  | 100.00% | 100.00%
Accrued interest on loan portfolio |  | $ 1,300 | $ 1,300
Unearned income, unamortized deferred fees and costs on originated loans, and premiums or discounts on purchased loans |  | 1,000 | 1,000
Collateral Dependent |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,500 | 1,600
Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 322,665 | $ 312,223
Percentage of total loans, past due |  | 98.87% | 98.66%
30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 635 | $ 697
Percentage of total loans, past due |  | 0.19% | 0.22%
60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 297 | $ 288
Percentage of total loans, past due |  | 0.09% | 0.09%
90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 371 | $ 397
Percentage of total loans, past due |  | 0.11% | 0.13%
Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 1,303 | $ 1,382
Percentage of total loans, past due |  | 0.40% | 0.44%
Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 2,108 | $ 2,326
Percentage of total loans, past due |  | 0.65% | 0.73%
Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | $ 264 | $ 536
Percentage of total loans, nonaccrual, past due |  | 0.08% | 0.17%
Commercial Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | $ 227,008 | $ 216,164
Commercial Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 225,395 | 214,332
Commercial Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 176 | 225
Commercial Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 107 | 73
Commercial Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 79 | 72
Commercial Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 362 | 370
Commercial Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,251 | 1,462
Commercial Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 0 | 0
Consumer Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 99,332 | 100,303
Consumer Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 97,270 | 97,891
Consumer Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 459 | 472
Consumer Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 190 | 215
Consumer Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 292 | 325
Consumer Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 941 | 1,012
Consumer Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 857 | 864
Consumer Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 264 | 536
Commercial and industrial | Commercial Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 188,830 | 175,790
Commercial and industrial | Commercial Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 188,080 | 174,988
Commercial and industrial | Commercial Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 118 | 159
Commercial and industrial | Commercial Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 91 | 43
Commercial and industrial | Commercial Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 79 | 72
Commercial and industrial | Commercial Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 288 | 274
Commercial and industrial | Commercial Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 462 | 528
Commercial and industrial | Commercial Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 0 | 0
Commercial real estate | Commercial Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 31,250 | 33,619
Commercial real estate | Commercial Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 30,448 | 32,657
Commercial real estate | Commercial Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 43 | 25
Commercial real estate | Commercial Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6 | 18
Commercial real estate | Commercial Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 0 | 0
Commercial real estate | Commercial Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 49 | 43
Commercial real estate | Commercial Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 753 | 919
Commercial real estate | Commercial Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 0 | 0
Equipment lease financing | Commercial Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,928 | 6,755
Equipment lease financing | Commercial Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,867 | 6,687
Equipment lease financing | Commercial Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 15 | 41
Equipment lease financing | Commercial Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 10 | 12
Equipment lease financing | Commercial Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 0 | 0
Equipment lease financing | Commercial Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25 | 53
Equipment lease financing | Commercial Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 36 | 15
Equipment lease financing | Commercial Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 0 | 0
Residential real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 45,257 | 46,415
Residential real estate | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 611 | 620
Residential real estate | Consumer Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 45,257 | 46,415
Residential real estate | Consumer Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 44,188 | 45,134
Residential real estate | Consumer Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 247 | 234
Residential real estate | Consumer Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 91 | 106
Residential real estate | Consumer Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 182 | 188
Residential real estate | Consumer Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 520 | 528
Residential real estate | Consumer Portfolio Segment | Total Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 200 | 300
Residential real estate | Consumer Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 325 | 278
Residential real estate | Consumer Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 224 | 475
Home equity |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,928 | 25,991
Home equity | Consumer Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,928 | 25,991
Home equity | Consumer Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25,362 | 25,351
Home equity | Consumer Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 62 | 71
Home equity | Consumer Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 28 | 26
Home equity | Consumer Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 0 | 0
Home equity | Consumer Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 90 | 97
Home equity | Consumer Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 436 | 482
Home equity | Consumer Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 40 | 61
Automobile | Consumer Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 15,892 | 15,355
Automobile | Consumer Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 15,714 | 15,155
Automobile | Consumer Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 74 | 83
Automobile | Consumer Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 19 | 22
Automobile | Consumer Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 5 | 9
Automobile | Consumer Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 98 | 114
Automobile | Consumer Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 80 | 86
Automobile | Consumer Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 0 | 0
Credit card | Consumer Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,570 | 6,879
Credit card | Consumer Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6,419 | 6,696
Credit card | Consumer Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 42 | 49
Credit card | Consumer Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 32 | 38
Credit card | Consumer Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 64 | 81
Credit card | Consumer Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 138 | 168
Credit card | Consumer Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 13 | 15
Credit card | Consumer Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 0 | 0
Education |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,547 | 1,636
Education | Consumer Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,547 | 1,636
Education | Consumer Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 1,477 | 1,557
Education | Consumer Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 22 | 25
Education | Consumer Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 14 | 15
Education | Consumer Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 34 | 39
Education | Consumer Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 70 | 79
Education | Consumer Portfolio Segment | Total Past Due | Government insured or guaranteed loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 100 | 100
Education | Consumer Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 0 | 0
Education | Consumer Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | 0 | 0
Other consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,138 | 4,027
Other consumer | Consumer Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,138 | 4,027
Other consumer | Consumer Portfolio Segment | Current or Less Than 30 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 4,110 | 3,998
Other consumer | Consumer Portfolio Segment | 30-59 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 12 | 10
Other consumer | Consumer Portfolio Segment | 60-89 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 6 | 8
Other consumer | Consumer Portfolio Segment | 90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 7 | 8
Other consumer | Consumer Portfolio Segment | Total Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 25 | 26
Other consumer | Consumer Portfolio Segment | Nonperforming Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total loans |  | 3 | 3
Other consumer | Consumer Portfolio Segment | Fair Value Option Nonaccrual Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Nonaccrual loans |  | $ 0 | $ 0
[1] | Our consolidated assets included the following for which we have elected the fair value option: Loans held for sale of $1.5 billion, Loans held for investment of $1.1 billion and Other assets of $0.2 billion at June 30, 2025. Comparable amounts at December 31, 2024 were $0.8 billion, $1.2 billion and $0.1 billion, respectively.

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