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Landfill and Environmental Remediation Liabilities | 9 Months Ended
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Sep. 30, 2024
Landfill and Environmental Remediation Liabilities |
Landfill and Environmental Remediation Liabilities | 2. Landfill and Environmental Remediation Liabilities Liabilities for landfill and environmental remediation costs are presented in the table below (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2024 | ​ | December 31, 2023
​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​
​ |  | Landfill |  | Remediation |  | Total |  | Landfill |  | Remediation |  | Total
Current (in accrued liabilities) |  | $ | 141 | ​ | $ | 27 | ​ | $ | 168 | ​ | $ | 143 | ​ | $ | 31 | ​ | $ | 174
Long-term | ​ |  | 2,790 | ​ |  | 175 | ​ |  | 2,965 |  |  | 2,710 | ​ |  | 178 | ​ |  | 2,888
​ |  | $ | 2,931 | ​ | $ | 202 | ​ | $ | 3,133 | ​ | $ | 2,853 | ​ | $ | 209 | ​ | $ | 3,062
​ ​ The changes to landfill and environmental remediation liabilities for the nine months ended September 30, 2024 are reflected in the table below (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Environmental
​ |  | Landfill |  | Remediation
December 31, 2023 | ​ | $ | 2,853 | ​ | $ | 209
Obligations incurred and capitalized | ​ |  | 69 |  |  | —
Obligations settled | ​ |  | (98) |  |  | (19)
Interest accretion | ​ |  | 99 |  |  | —
Revisions in estimates | ​ |  | 9 |  |  | 12
Acquisitions, divestitures and other adjustments | ​ |  | (1) |  |  | —
September 30, 2024 | ​ | $ | 2,931 | ​ | $ | 202
​ At several of our landfills, we provide financial assurance by depositing cash into restricted trust funds for purposes of settling final capping, closure, post-closure and environmental remediation obligations. Generally, these trust funds are established to comply with statutory requirements and operating agreements. See Note 13 for additional information related to these trusts.

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