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ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning of period | $ 274 |
End of period | 290 | $ 274
Accrual for Environmental Loss Contingencies, Balance Sheet Classification [Abstract] |  |
Accrued Environmental Loss Contingencies, Current | 10 | 10
Accrued Environmental Loss Contingencies, Noncurrent | 280 | 264
Environmental Remediation [Member] |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning of period | 245 | 253
Changes in estimates recognized in earnings and other | 18 | 6
Cash reductions | (5) | (14)
End of period | $ 258 | 245
Expected Payment Period of Environmental Contingencies | approximately 30 years |
Environmental Remediation [Member] | Minimum [Member] |  |
Site Contingency [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | $ 258 | 245
Environmental Remediation [Member] | Maximum [Member] |  |
Site Contingency [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 500 | 457
Environmental ARO [Member] |  |
Site Contingency [Line Items] |  |
Best Estimate Accrued to-date For Asset Retirement Obligation | 32 | 29
Non Environmental ARO [Member] |  |
Site Contingency [Line Items] |  |
Best Estimate Accrued to-date For Asset Retirement Obligation | $ 52 | $ 51

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