The value (monetary amount) of the award the plaintiff seeks in the legal matter.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

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- Definition

The value (monetary amount) of the abatement fund the plaintiff seeks in the legal matter.

+ References

No definition available.

+ Details

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- Definition

Annual tons of waste accepted at landfill

+ References

No definition available.

+ Details

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- 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.

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- Definition

Estimate of total new fees and other new taxes over the life of the conditional use permit

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

The maximum value (monetary amount) of the award the plaintiff seeks in the mass action legal matter, per plaintiff.

+ References

No definition available.

+ Details

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Namespace Prefix:	wcn_
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Balance Type:	debit
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- Definition

Threshold used for disclosing environmental matters involving potential monetary sanctions

+ References

No definition available.

+ Details

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Commitments and Contingencies - Narrative (Details) T in Thousands					12 Months Ended
	Jun. 05, 2026 USD ($)	Jun. 03, 2025 USD ($)	May 29, 2025 USD ($)	Aug. 09, 2024 USD ($)	Dec. 31, 2024 T	Jun. 30, 2026 USD ($)
Contingencies And Commitments [Line Items]
Threshold used for disclosing environmental matters involving potential monetary sanctions						$ 1,000,000
Jefferson Parish, Louisiana Landfill Litigation
Contingencies And Commitments [Line Items]
Loss contingency amount sought				$ 4,500,000
Maximum damages sought per plaintiff		$ 74,999
Chiquita Canyon, LLC
Contingencies And Commitments [Line Items]
Annual tons of waste accepted at landfill \| T					2,300
Estimate of total new fees and other new taxes over the life of the conditional use permit						$ 300,000,000
Chiquita Canyon, LLC \| County of Los Angeles Litigation
Contingencies And Commitments [Line Items]
Abatement Fund Amount Sought			$ 20,000,000
Chiquita Canyon, LLC \| County of Los Angeles Litigation \| Minimum
Contingencies And Commitments [Line Items]
Loss contingency amount sought	$ 825,000,000