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ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Details) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2022 USD ($) party site | Sep. 30, 2021 USD ($) mi | Jun. 30, 2018 USD ($) | Mar. 31, 2016 mi | Sep. 30, 2016 party | Dec. 31, 2022 USD ($) site segment | Dec. 31, 2021 USD ($) site | Dec. 31, 2020 USD ($)
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of sites | site | 162 |  |  |  |  | 162 | 165 |
Remediation balance | $ 1,046,000,000 |  |  |  |  | $ 1,046,000,000 | $ 1,099,000,000 |
Environmental reserves, exceeding $ ten million, threshold value | $ 10,000,000 |  |  |  |  | $ 10,000,000 |  |
Environmental reserves, exceeding $ ten million, number of sites | site | 17 |  |  |  |  | 17 |  |
Environmental reserves, range between zero to $ one million site category, number of sites | site | 94 |  |  |  |  | 94 |  |
Environmental remediation expense, statement of income or comprehensive income |  |  |  |  |  | Other operating and non-operating expense | Other operating and non-operating expense | Other operating and non-operating expense
Remediation expenses |  |  |  |  |  | $ 65,000,000 | $ 28,000,000 | $ 36,000,000
Percent of reserve to be funded over the next three to four years |  |  |  |  |  | 40.00% |  |
Minimum period of expending second half of environmental reserves |  |  |  |  |  | 10 years |  |
Subsidiaries |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of sites | site | 162 |  |  |  |  | 162 |  |
Environmental remediation additional loss range | $ 2,700,000,000 |  |  |  |  | $ 2,700,000,000 |  |
Accrued liabilities |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Environmental loss contingency, statement of financial position | Accrued liabilities |  |  |  |  | Accrued liabilities | Accrued liabilities |
Remediation balance | $ 141,000,000 |  |  |  |  | $ 141,000,000 | $ 155,000,000 |
Accrued Environmental Loss Contingencies, Noncurrent |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Environmental loss contingency, statement of financial position | Accrued Environmental Loss Contingencies, Noncurrent |  |  |  |  | Accrued Environmental Loss Contingencies, Noncurrent | Accrued Environmental Loss Contingencies, Noncurrent |
Remediation balance | $ 900,000,000 |  |  |  |  | $ 900,000,000 | $ 900,000,000 |
Low end of range |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Environmental reserves, range between zero to $ one million site category | 0 |  |  |  |  | $ 0 |  |
Period of expending 40 percent 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 |  |  |  |  | $ 1,000,000 |  |
Period of expending 40 percent of environmental reserves |  |  |  |  |  | 4 years |  |
Non-National Priorities List Sites |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of site categories | site | 3 |  |  |  |  | 3 |  |
NPL sites |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of sites | site | 30 |  |  |  |  | 30 | 30 |
Remediation balance | $ 445,000,000 |  |  |  |  | $ 445,000,000 | $ 427,000,000 |
Third-Party Sites |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of sites | site | 68 |  |  |  |  | 68 | 69 |
Remediation balance | $ 238,000,000 |  |  |  |  | $ 238,000,000 | $ 273,000,000 |
Number of sites with significant environmental remediation reserves | site |  |  |  |  |  | 5 |  |
Number of sites not indemnified by third party | site |  |  |  |  |  | 68 |  |
Percentage of environmental reserves accounted for by associated sites |  |  |  |  |  | 66.70% |  |
Currently Operated Sites |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of sites | site | 13 |  |  |  |  | 13 | 15 |
Remediation balance | $ 106,000,000 |  |  |  |  | $ 106,000,000 | $ 122,000,000 |
Number of sites with significant environmental remediation reserves | site |  |  |  |  |  | 3 |  |
Percentage of environmental reserves accounted for by associated sites |  |  |  |  |  | 66.70% |  |
Closed or Non-operated Sites |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of sites | site | 51 |  |  |  |  | 51 | 51 |
Remediation balance | $ 257,000,000 |  |  |  |  | $ 257,000,000 | $ 277,000,000 |
Number of sites with significant environmental remediation reserves | site |  |  |  |  |  | 8 |  |
Percentage of environmental reserves accounted for by associated sites |  |  |  |  |  | 66.70% |  |
Alden Leeds |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of parties, settled | party | 85 |  |  |  |  |  |  |
Alden Leeds | Alden Leeds |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Remediation expenses | $ 150,000,000 |  |  |  |  |  |  |
Number of parties, settled | party | 85 |  |  |  |  |  |  |
Diamond Alkali Superfund Site |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Number of operating units | segment |  |  |  |  |  | 4 |  |
Diamond Alkali Superfund Site - Operable Unit Two |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Remediation expenses |  |  | $ 1,400,000,000 |  |  |  |  |
Stretch of lower passaic river requiring remedial actions | mi |  |  |  | 8.3 |  |  |  |
Number of parties, notified to pay the cost | party |  |  |  |  | 100 |  |  |
Diamond Alkali Superfund Site - Operable Unit Four |  |  |  |  |  |  |  |
Environmental remediation reserves |  |  |  |  |  |  |  |
Remediation expenses |  | $ 440,000,000 |  |  |  |  |  |
Stretch of lower passaic river requiring remedial actions | mi |  | 17 |  |  |  |  |  |
River stretch which may require remedial actions | mi |  | 9 |  |  |  |  |  |

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