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ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Tables) | 6 Months Ended
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Jun. 30, 2023
Environmental Remediation Obligations [Abstract] |
Schedule of Current and Non-Current Environmental Remediation Reserves by Categories of Sites | The following table presents the current and non-current environmental remediation liabilities of such subsidiaries on a consolidated basis as of June 30, 2023. The current portion of $141 million is included in accrued liabilities and the remainder of $867 million is included in deferred credits and other liabilities - environmental remediation liabilities. These environmental remediation sites are grouped into NPL Sites and the following three categories of non-NPL Sites—Third-Party Sites, Currently Operated Sites and Closed or Non-Operated Sites.
millions, except number of sites | Number of Sites | Remediation Balance
NPL Sites | 30 |  | $ | 438 |
Third-Party Sites | 66 |  | 217 |
Currently Operated Sites | 13 |  | 101 |
Closed or Non-Operated Sites | 51 |  | 252 |
Total | 160 |  | $ | 1,008 |

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- Definition Tabular disclosure of environmental loss contingencies by individual site. Does not include loss contingencies that are not environmental in nature. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480102/450-20-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480102/450-20-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481931/410-30-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481931/410-30-50-10 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481931/410-30-50-10 + Details
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