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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Goodwill |
GOODWILL (Dollars in millions) |  | 2023 |  |  | 2022 |
Carrying amount at beginning of year |  | $ | 1,375 |  |  | $ | 1,387 |
Translation differences |  |  | 2 |  |  |  | (11 | )
Carrying amount at end of year |  | $ | 1,378 |  |  | $ | 1,375 |
Schedule of Amortizable Intangibles |
AMORTIZABLE INTANGIBLES (Dollars in millions) |  | 2023 |  |  | 2022 |
Gross carrying amount |  | $ | 391 |  |  | $ | 387 |
Accumulated amortization |  |  | (384 | ) |  |  | (380 | )
Carrying value |  | $ | 7 |  |  | $ | 7 |

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