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ENVIRONMENTAL MATTERS (Tables) | 12 Months Ended
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Dec. 31, 2021
Environmental Matters [Abstract] |
Schedule of Environmental Liabilities, Current and Non-current |
(Dollars in millions) | December 31,
| 2021 |  | 2020
Environmental contingencies, current | $ | 20 |  |  | $ | 15 |
Environmental contingencies, long-term | 261 |  |  | 270 |
Total | $ | 281 |  |  | $ | 285 |
Schedule of Changes to Environmental Remediation Liabilities |
(Dollars in millions) | Environmental Remediation Liabilities
Balance at December 31, 2019 | $ | 260 |
Changes in estimates recognized in earnings and other | 7 |
Cash reductions | (10) |
Balance at December 31, 2020 | 257 |
Changes in estimates recognized in earnings and other | 9 |
Cash reductions | (13) |
Balance at December 31, 2021 | $ | 253 |

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