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ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS (Tables) | 6 Months Ended
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Jun. 30, 2023
Accrual for Environmental Loss Contingencies Disclosure [Abstract] |
Schedule of environmental liabilities, current and non-current |
(Dollars in millions) | June 30, 2023 |  | December 31, 2022
Environmental contingencies, current | $ | 10 |  |  | $ | 10 |
Environmental contingencies, long-term | 280 |  |  | 264 |
Total | $ | 290 |  |  | $ | 274 |
Schedule of changes to environmental remediation liabilities | Changes in the reserves for environmental remediation liabilities during first six months 2023 and full year 2022 are summarized below:
(Dollars in millions) | Environmental Remediation Liabilities
Balance at December 31, 2021 | $ | 253 |
Changes in estimates recognized in earnings and other | 6 |
Cash reductions | (14) |
Balance at December 31, 2022 | 245 |
Changes in estimates recognized in earnings and other | 18 |
Cash reductions | (5) |
Balance at June 30, 2023 | $ | 258 |

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