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ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) party | Sep. 30, 2021 USD ($) mi | Jun. 30, 2018 USD ($) | Mar. 31, 2016 mi | Sep. 30, 2016 party | Jun. 30, 2023 USD ($) site segment
Environmental remediation reserves |  |  |  |  |  |  |
Number of Sites | site |  |  |  |  |  |  | 160
Current portion of environmental remediation liabilities |  |  |  |  |  |  | $ 141,000,000
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 |  | $ 905,000,000 |  |  |  |  | $ 867,000,000
Remediation Balance |  |  |  |  |  |  | 1,008,000,000
Environmental reserves, exceeding $ ten million, threshold value |  |  |  |  |  |  | $ 10,000,000
Environmental reserves, exceeding $ ten million, threshold value, number of sites | site |  |  |  |  |  |  | 16
Environmental reserves, range between zero to $ one million site category, number of sites | site |  |  |  |  |  |  | 95
Percent of reserve to be funded over the next three to four years |  |  |  |  |  |  | 40.00%
Period of expending remaining environmental reserves (or more) |  |  |  |  |  |  | 10 years
Environmental remediation additional loss range |  |  |  |  |  |  | $ 2,700,000,000
Subsidiaries |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Number of Sites | site |  |  |  |  |  |  | 160
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 |  |  |  |  |  |  | $ 1,000,000
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 |  |  |  |  |  |  | 30
Remediation Balance |  |  |  |  |  |  | $ 438,000,000
Third-Party Sites |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Number of Sites | site |  |  |  |  |  |  | 66
Remediation Balance |  |  |  |  |  |  | $ 217,000,000
Currently Operated Sites |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Number of Sites | site |  |  |  |  |  |  | 13
Remediation Balance |  |  |  |  |  |  | $ 101,000,000
Closed or Non-Operated Sites |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Number of Sites | site |  |  |  |  |  |  | 51
Remediation Balance |  |  |  |  |  |  | $ 252,000,000
Diamond Alkali Superfund Site |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Site contingency, number of operating units | segment |  |  |  |  |  |  | 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 |  |  |  | $ 1,400,000,000 |  |  |
Diamond Alkali Superfund Site - Operable Unit Four |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Stretch of lower passaic river requiring remedial actions | mi |  |  | 17 |  |  |  |
Environmental remediation expense |  |  | $ 440,000,000 |  |  |  |
Stretch of lower passaic river not covered by remedial actions | mi |  |  | 9 |  |  |  |
Financial assurance | $ 93,000,000 |  |  |  |  |  |
Alden Leeds |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Number of parties, settled | party |  | 85 |  |  |  |  |
Alden Leeds | Alden Leeds |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |
Environmental remediation expense |  | $ 150,000,000 |  |  |  |  |
Number of parties, settled | party |  | 85 |  |  |  |  |
Financial assurance |  |  |  |  |  |  | $ 93,000,000

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