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Goodwill, Customer Relationships and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Goodwill | Goodwill and other intangible assets consisted of the following:
| June 30, 2024 |  | December 31, 2023
| (Dollars in millions)
Goodwill (1) | $ | 6,955 |  |  | 6,955 |
Other intangible assets, less accumulated amortization of $1,953 and $1,966 | $ | 92 |  |  | 103 |
______________________________________________________________________ (1) Goodwill at June 30, 2024 and December 31, 2023 is net of accumulated impairment losses of $2.4 billion.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | We estimate that future total amortization expense for finite-lived intangible assets will be as follows:
| (Dollars in millions)
2024 (remaining six months) | $ | 16 |
2025 | 27 |
2026 | 16 |
2027 | 12 |
2028 | 9 |
2029 and thereafter | 12 |

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