XML 56 R44.htm IDEA: XBRL DOCUMENT
v3.26.1

Landfill Accounting - Landfills Owned and Operated (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2026 USD ($) site | Dec. 31, 2025 USD ($)
Landfill Accounting [Line Items] |  |
Number of landfills owned and operated by company | 103 |
Number of landfills operated, not owned, under life-of-site operating agreements | 5 |
Number of landfills operated under limited-term operating agreements | 7 |
Property and equipment, net | $ | $ 8,965,023 | $ 8,733,327
Average remaining landfill life based on permitted capacity and projected annual disposal volumes | 31 years |
Number of owned landfills the company is seeking to expand | 4 |
Average remaining landfill life based on permitted capacity, projected annual disposal volumes and probable expansion capacity | 33 years |
Life of Company's owned landfills and landfills operated under life-of-site operating agreements min range | 1 year |
Percentage of projected annual disposal volume from landfills with remaining lives within threshold period | 90.00% |
Threshold period used for measurement of projected annual disposal volume from landfills | 70 years |
Landfill |  |
Landfill Accounting [Line Items] |  |
Property and equipment, net | $ | $ 3,436,032 |

X
- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 360 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478443/942-360-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 360 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478451/942-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | wcn_AssetRetirementObligationLineItems
Namespace Prefix: | wcn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average remaining landfill life, based on remaining permitted capacity and projected annual disposal volumes, for the company's owned landfills and landfills operated under life-of-site operating agreements. + References No definition available. + Details
Name: | wcn_AverageRemainingLandfillLifeBasedOnPermittedCapacityAndProjectedAnnualDisposalVolumes
Namespace Prefix: | wcn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average remaining landfill life, based on permitted capacity, projected annual disposal volumes and probable expansion capacity, for the Company's owned landfills and landfills operated under life-of-site operating agreements. + References No definition available. + Details
Name: | wcn_AverageRemainingLandfillLifeBasedOnPermittedCapacityProjectedAnnualDisposalVolumesAndProbableExpansionCapacity
Namespace Prefix: | wcn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum range of the life of Company's owned landfills and landfills operated under life of site operating agreements, when considering remaining permitted capacity, probable expansion capacity and projected annual disposal volume. + References No definition available. + Details
Name: | wcn_LifeOfCompanysOwnedLandfillsAndLandfillsOperatedUnderLifeOfSiteOperatingAgreementsMinRange
Namespace Prefix: | wcn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Landfills Operated Not Owned Under Life Of Site Operating Agreements + References No definition available. + Details
Name: | wcn_NumberOfLandfillsOperatedNotOwnedUnderLifeOfSiteOperatingAgreements
Namespace Prefix: | wcn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of landfills operated under limited-term operating agreements. + References No definition available. + Details
Name: | wcn_NumberOfLandfillsOperatedUnderLimitedTermOperatingAgreements
Namespace Prefix: | wcn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of landfills owned and operated by company + References No definition available. + Details
Name: | wcn_NumberOfLandfillsOwnedAndOperatedByCompany
Namespace Prefix: | wcn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of owned landfills in which the company is seeking to expand permitted disposal capacity. + References No definition available. + Details
Name: | wcn_NumberOfOwnedLandfillsCompanyIsSeekingToExpand
Namespace Prefix: | wcn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of projected annual disposal volume from landfills with remaining lives within threshold period + References No definition available. + Details
Name: | wcn_PercentageOfProjectedAnnualDisposalVolumeFromLandfillsWithRemainingLivesWithinThresholdPeriod
Namespace Prefix: | wcn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Threshold period used for measurement of projected annual disposal volume from landfills + References No definition available. + Details
Name: | wcn_ThresholdPeriodUsedForMeasurementOfProjectedAnnualDisposalVolumeFromLandfills
Namespace Prefix: | wcn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandfillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |