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Landfill and Environmental Remediation Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2021
Landfill and Environmental Remediation Liabilities |
Liabilities for Landfill and Environmental Remediation Costs | Liabilities for landfill and environmental remediation costs are presented in the table below (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2021 | ​ | December 31, 2020
​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​
​ |  | Landfill |  | Remediation |  | Total |  | Landfill |  | Remediation |  | Total
Current (in accrued liabilities) |  | $ | 129 | ​ | $ | 26 | ​ | $ | 155 | ​ | $ | 138 | ​ | $ | 26 | ​ | $ | 164
Long-term | ​ |  | 2,105 | ​ |  | 194 | ​ |  | 2,299 |  |  | 2,018 | ​ |  | 204 | ​ |  | 2,222
​ |  | $ | 2,234 | ​ | $ | 220 | ​ | $ | 2,454 | ​ | $ | 2,156 | ​ | $ | 230 | ​ | $ | 2,386
Changes to Landfill and Environmental Remediation Liabilities | The changes to landfill and environmental remediation liabilities for the six months ended June 30, 2021 are reflected in the table below (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Environmental
​ |  | Landfill |  | Remediation
December 31, 2020 | ​ | $ | 2,156 | ​ | $ | 230
Obligations incurred and capitalized | ​ |  | 57 |  |  | —
Obligations settled | ​ |  | (44) |  |  | (9)
Interest accretion | ​ |  | 53 |  |  | 1
Revisions in estimates and interest rate assumptions | ​ |  | 11 |  |  | (2)
Acquisitions, divestitures and other adjustments | ​ |  | 1 |  |  | —
June 30, 2021 | ​ | $ | 2,234 | ​ | $ | 220
​

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- Definition Tabular disclosure of material liabilities for remediation, site restoration, postclosure, monitoring commitments, or other exit costs that may occur on the sale, disposal or abandonment of a property as a result of unanticipated contamination of the assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q4) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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- Definition Asset Retirement Obligation And Environmental Remediation Rollforward Analysis Table [Text Block] + References No definition available. + Details
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