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ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Tables) | 12 Months Ended
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Dec. 31, 2023
Environmental Remediation Obligations [Abstract] |
Schedule of current and non-current environmental remediation reserves by categories of sites |
| 2023 | 2022
millions, except number of sites | Number of Sites | Remediation Balance | Number of Sites | Remediation Balance
NPL Sites | 32 |  | $ | 435 |  | 30 |  | $ | 445 |
Third-Party Sites | 65 |  | 233 |  | 68 |  | 238 |
Currently Operated Sites | 12 |  | 98 |  | 13 |  | 106 |
Closed or Non-operated Sites | 51 |  | 255 |  | 51 |  | 257 |
Total | 160 |  | $ | 1,021 |  | 162 |  | $ | 1,046 |

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