XML 32 R12.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Landfill and Environmental Remediation Liabilities | 12 Months Ended
--- | ---
Dec. 31, 2023
Landfill and Environmental Remediation Liabilities |
Landfill and Environmental Remediation Liabilities | 3. Landfill and Environmental Remediation Liabilities Liabilities for landfill and environmental remediation costs as of December 31 are presented in the table below (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2023 | ​ | 2022
​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Environmental | ​ | ​ | ​
​ |  | Landfill |  | Remediation |  | Total |  | Landfill |  | Remediation |  | Total
Current (in accrued liabilities) |  | $ | 143 | ​ | $ | 31 | ​ | $ | 174 | ​ | $ | 137 | ​ | $ | 31 | ​ | $ | 168
Long-term | ​ |  | 2,710 | ​ |  | 178 | ​ |  | 2,888 |  |  | 2,527 | ​ |  | 173 | ​ |  | 2,700
​ |  | $ | 2,853 | ​ | $ | 209 | ​ | $ | 3,062 | ​ | $ | 2,664 | ​ | $ | 204 | ​ | $ | 2,868
​ The changes to landfill and environmental remediation liabilities for the year ended December 31, 2023 are reflected in the table below (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Environmental
​ |  | Landfill |  | Remediation
December 31, 2022 | ​ | $ | 2,664 | ​ | $ | 204
Obligations incurred and capitalized | ​ |  | 79 |  |  | —
Obligations settled | ​ |  | (147) |  |  | (27)
Interest accretion | ​ |  | 124 |  |  | 6
Revisions in estimates and interest rate assumptions | ​ |  | 131 |  |  | 26
Acquisitions, divestitures and other adjustments | ​ |  | 2 |  |  | —
December 31, 2023 | ​ | $ | 2,853 | ​ | $ | 209
​ Our recorded liabilities as of December 31, 2023 include the impacts of inflating certain of these costs based on our expectations of the timing of cash settlement.

X
- References No definition available. + Details
Name: | us-gaap_EnvironmentalRemediationObligationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Asset Retirement Obligation And Environmental Remediation Disclosure [Text Block] + References No definition available. + Details
Name: | wm_AssetRetirementObligationAndEnvironmentalRemediationDisclosureTextBlock
Namespace Prefix: | wm_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration