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Landfill and Environmental Remediation Liabilities | 9 Months Ended
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Sep. 30, 2023
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, 2023 | ​ | December 31, 2022
​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​
​ |  | Landfill |  | Remediation |  | Total |  | Landfill |  | Remediation |  | Total
Current (in accrued liabilities) |  | $ | 142 | ​ | $ | 32 | ​ | $ | 174 | ​ | $ | 137 | ​ | $ | 31 | ​ | $ | 168
Long-term | ​ |  | 2,574 | ​ |  | 153 | ​ |  | 2,727 |  |  | 2,527 | ​ |  | 173 | ​ |  | 2,700
​ |  | $ | 2,716 | ​ | $ | 185 | ​ | $ | 2,901 | ​ | $ | 2,664 | ​ | $ | 204 | ​ | $ | 2,868
​ The changes to landfill and environmental remediation liabilities for the nine months ended September 30, 2023 are reflected in the table below (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Environmental
​ |  | Landfill |  | Remediation
December 31, 2022 | ​ | $ | 2,664 | ​ | $ | 204
Obligations incurred and capitalized | ​ |  | 61 |  |  | —
Obligations settled | ​ |  | (106) |  |  | (20)
Interest accretion | ​ |  | 92 |  |  | 5
Revisions in estimates and interest rate assumptions | ​ |  | 5 |  |  | (4)
Acquisitions, divestitures and other adjustments | ​ |  | — |  |  | —
September 30, 2023 | ​ | $ | 2,716 | ​ | $ | 185
​ 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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