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Landfill and Environmental Remediation Liabilities | 3 Months Ended
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Mar. 31, 2019
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):
|  | March 31, 2019 |  | December 31, 2018
|  |  |  |  | Environmental |  |  |  |  |  |  |  | Environmental |  |  |
|  | Landfill |  | Remediation |  | Total |  | Landfill |  | Remediation |  | Total
Current (in accrued liabilities) |  | $ | 132 |  | $ | 26 |  | $ | 158 |  | $ | 143 |  | $ | 26 |  | $ | 169
Long-term |  |  | 1,659 |  |  | 207 |  |  | 1,866 |  |  | 1,617 |  |  | 211 |  |  | 1,828
|  | $ | 1,791 |  | $ | 233 |  | $ | 2,024 |  | $ | 1,760 |  | $ | 237 |  | $ | 1,997
The changes to landfill and environmental remediation liabilities for the three months ended March 31, 2019 are reflected in the table below (in millions):
|  |  |  |  | Environmental
|  | Landfill |  | Remediation
December 31, 2018 |  | $ | 1,760 |  | $ | 237
Obligations incurred and capitalized |  |  | 17 |  |  | —
Obligations settled |  |  | (13) |  |  | (5)
Interest accretion |  |  | 23 |  |  | 1
Revisions in estimates and interest rate assumptions |  |  | 1 |  |  | —
Acquisitions, divestitures and other adjustments |  |  | 3 |  |  | —
March 31, 2019 |  | $ | 1,791 |  | $ | 233
At several of our landfills, we provide financial assurance by depositing cash into restricted trust funds or escrow accounts for purposes of settling our 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 14 for additional information related to these trusts.

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