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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Carrying Amount of Goodwill | Changes in the carrying amount of goodwill by reporting segment are presented in the following table:
Dollars in millions | Consumer Bank | Commercial Bank | Total
BALANCE AT DECEMBER 31, 2021 | $ | 1,761 |  | $ | 932 |  | $ | 2,693 |
XUP acquisition measurement period adjustment | — |  | 1 |  | 1 |
GradFin acquisition | 58 |  | — |  | 58 |
BALANCE AT DECEMBER 31, 2022 | 1,819 |  | 933 |  | 2,752 |
BALANCE AT DECEMBER 31, 2023 | $ | 1,819 |  | $ | 933 |  | $ | 2,752 |
Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets | The following table shows the gross carrying amount and the accumulated amortization of intangible assets subject to amortization:
| 2023 |  | 2022
December 31, Dollars in millions | Gross Carrying Amount | Accumulated Amortization |  | Gross Carrying Amount | Accumulated Amortization
Intangible assets subject to amortization: |  |  |  |  |
Core deposit intangibles | $ | 356 |  | $ | 326 |  |  | $ | 355 |  | $ | 303 |
PCCR intangibles | 16 |  | 15 |  |  | 16 |  | 14 |
Other intangible assets | 80 |  | 56 |  |  | 84 |  | 44 |
Total | $ | 452 |  | $ | 397 |  |  | $ | 455 |  | $ | 361 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | The following table presents estimated intangible asset amortization expense for the next five years.
| Estimated
Dollars in millions | 2024 | 2025 | 2026 | 2027 | 2028
Intangible asset amortization expense | $ | 28 |  | $ | 19 |  | $ | 7 |  | $ | 1 |  | $ | — |

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