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Goodwill and Core Deposit Intangibles (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Core Deposit Intangible Assets | The following tables summarize the activity for core deposit intangibles during the year ended December 31, 2023 and 2022: Core Deposit Intangibles
dollars in millions | 2023 |  | 2022 |  |
Balance at January 1, net of accumulated amortization | $ | 140 |  |  | $ | 19 |  |  |
Core deposit intangibles related to the SVBB Acquisition | 230 |  |  | — |  |  |
Core deposit intangibles related to the CIT Merger | — |  |  | 143 |  |  |
Amortization for the period | (58) |  |  | (22) |  |  |
Balance at December 31, net of accumulated amortization | $ | 312 |  |  | $ | 140 |  |  |
The following tables summarize the accumulated amortization balance for core deposit intangibles at December 31, 2023 and 2022: Core Deposit Intangible Accumulated Amortization
dollars in millions | December 31, 2023 |  | December 31, 2022
Gross balance | $ | 501 |  |  | $ | 271 |
Accumulated amortization | (189) |  |  | (131) |
Balance, net of accumulated amortization | $ | 312 |  |  | $ | 140 |
Schedule of Core Deposit Intangible Assets, Future Amortization Expense | The following table summarizes the expected amortization expense as of December 31, 2023 in subsequent periods for core deposit intangibles: Core Deposit Intangible Expected Amortization
dollars in millions |
2024 | $ | 63 |
2025 | 54 |
2026 | 46 |
2027 | 39 |
2028 | 34 |
Thereafter | 76 |
Balance, net of accumulated amortization | $ | 312 |
Schedule of Finite-Lived Intangible Liabilities | The following tables summarize the activity for the intangible liability during the year ended December 31, 2023 and 2022: Intangible Liability
dollars in millions | 2023 |  | 2022
Balance at January 1 | $ | 36 |  |  | $ | — |
Acquired in CIT Merger | — |  |  | 52 |
Amortization | (12) |  |  | (16) |
Balance at December 31, net of accumulated amortization | $ | 24 |  |  | $ | 36 |
The following tables summarize the accumulated amortization balance for the intangible liability at December 31, 2023 and 2022: Intangible Liability Accumulated Amortization
dollars in millions | December 31, 2023 |  | December 31, 2022
Gross balance | $ | 52 |  |  | $ | 52 |
Accumulated amortization | (28) |  |  | (16) |
Balance, net of accumulated amortization | $ | 24 |  |  | $ | 36 |
Schedule of Finite-Lived Intangible Liabilities, Future Amortization Expense | The following table summarizes the expected amortization as of December 31, 2023 in subsequent periods for the intangible liability: Intangible Liability
dollars in millions |
2024 | $ | 6 |
2025 | 4 |
2026 | 3 |
2027 | 2 |
2028 | 2 |
Thereafter | 7 |
Total | $ | 24 |

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