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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Goodwill |
|  | December31, |
GOODWILL (Dollars in millions) |  | 2024 |  |  | 2023 |
Carrying amount at beginning of year |  | $ | 1,378 |  |  | $ | 1,375 |
Translation differences |  |  | (10 | ) |  |  | 2 |
Carrying amount at end of year |  | $ | 1,368 |  |  | $ | 1,378 |
Schedule of Amortizable Intangibles |
|  | December 31, |
AMORTIZABLE INTANGIBLES (Dollars in millions) |  | 2024 |  |  | 2023 |
Gross carrying amount |  | $ | 386 |  |  | $ | 391 |
Accumulated amortization |  |  | (379 | ) |  |  | (384 | )
Carrying value |  | $ | 7 |  |  | $ | 7 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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