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ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Details) $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jan. 31, 2024 company | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) party | Sep. 30, 2021 USD ($) mi | Jun. 30, 2018 USD ($) | Mar. 31, 2016 mi | Mar. 31, 2024 USD ($) site unit party | Sep. 30, 2016 party | Dec. 31, 2023 USD ($)
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Number of sites | site |  |  |  |  |  |  | 159 |  |
Current portion of environmental remediation liabilities |  |  |  |  |  |  | $ 131 |  |
Environmental loss contingency, statement of financial position |  |  |  |  |  |  | Environmental remediation reserves, non-current, included in deferred credits and other liabilities - other, Accrued liabilities |  |
Environmental remediation reserves, non-current, included in deferred credits and other liabilities - other |  |  |  |  |  |  | $ 870 |  | $ 889
Remediation balance |  |  |  |  |  |  | 1,001 |  |
Environmental reserves, exceeding $ ten million, threshold value |  |  |  |  |  |  | $ 10 |  |
Environmental reserves, exceeding $ ten million, threshold value, number of sites | site |  |  |  |  |  |  | 18 |  |
Environmental reserves, range between zero to $ one million site category, number of sites | site |  |  |  |  |  |  | 93 |  |
Percent of reserve to be funded over the next three to four years |  |  |  |  |  |  | 45.00% |  |
Period of expending remaining environmental reserves (or more) |  |  |  |  |  |  | 10 years |  |
Environmental remediation additional loss range |  |  |  |  |  |  | $ 2,600 |  |
Subsidiaries |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Number of sites | site |  |  |  |  |  |  | 159 |  |
Low end of range |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Environmental reserves, range between zero to $ one million site category |  |  |  |  |  |  | $ 0 |  |
Period of expending first half of environmental reserves |  |  |  |  |  |  | 3 years |  |
High end of range |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Environmental reserves, range between zero to $ one million site category |  |  |  |  |  |  | $ 1 |  |
Period of expending first half of environmental reserves |  |  |  |  |  |  | 4 years |  |
Non-National Priorities List Sites |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Environmental remediation contingency, number of site categories | site |  |  |  |  |  |  | 3 |  |
NPL Sites |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Number of sites | site |  |  |  |  |  |  | 32 |  |
Remediation balance |  |  |  |  |  |  | $ 432 |  |
Third-Party Sites |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Number of sites | site |  |  |  |  |  |  | 64 |  |
Remediation balance |  |  |  |  |  |  | $ 220 |  |
Currently Operated Sites |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Number of sites | site |  |  |  |  |  |  | 12 |  |
Remediation balance |  |  |  |  |  |  | $ 96 |  |
Closed or Non-Operated Sites |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Number of sites | site |  |  |  |  |  |  | 51 |  |
Remediation balance |  |  |  |  |  |  | $ 253 |  |
Diamond Alkali Superfund Site |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Site contingency, number of operating units | unit |  |  |  |  |  |  | 4 |  |
Diamond Alkali Superfund Site - Operable Unit Two |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Stretch of lower passaic river requiring remedial actions | mi |  |  |  |  |  | 8.3 |  |  |
Number of parties notified to pay the cost | party |  |  |  |  |  |  |  | 100 |
Environmental remediation expense |  |  |  |  | $ 1,400 |  |  |  |
Diamond Alkali Superfund Site - Operable Unit Four |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Stretch of lower passaic river requiring remedial actions | mi |  |  |  | 17 |  |  |  |  |
Environmental remediation expense |  |  |  | $ 440 |  |  |  |  |
Stretch of lower passaic river not covered by remedial actions | mi |  |  |  | 9 |  |  |  |  |
Financial assurance |  | $ 93 |  |  |  |  |  |  |
Alden Leeds | Alden Leeds |  |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |  |
Environmental remediation expense |  |  | $ 150 |  |  |  |  |  |
Financial assurance |  |  |  |  |  |  | $ 93 |  |
Number of parties, settled | party |  |  | 85 |  |  |  |  |  |
Number of companies excluded from settlement | company | 3 |  |  |  |  |  |  |  |
Number of parties to be released | party |  |  |  |  |  |  | 82 |  |
Remediation period |  |  |  |  |  |  | 10 years |  |

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