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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.

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The increase (decrease) during the reporting period, excluding the portion taken into income, in the liability reflecting revenue yet to be earned for which cash or other forms of consideration was received or recorded as a receivable.

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The increase (decrease) during the reporting period in other liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current liabilities, other noncurrent liabilities, or a combination of other current and noncurrent liabilities.

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The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes.

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The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

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Amount of interest income earned from interest bearing assets not separately disclosed.

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The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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The cash inflow from the additional capital contribution to the entity.

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The net cash inflow or outflow from the excess drawing from an existing cash balance, which will be honored by the bank but reflected as a loan to the drawer.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Adjustments to the fair value of contingent consideration that are not settled in cash

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Name:	wcn_AdjustmentsToContingentConsiderationNotSettledInCash
Namespace Prefix:	wcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Cash paid for current year acquisitions.

No definition available.

Name:	wcn_CashPaidForCurrentYearAcquisitions
Namespace Prefix:	wcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The fair value of assets acquired in investing or financing activities.

No definition available.

Name:	wcn_FairValueOfAcquiredAssets
Namespace Prefix:	wcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Gain Loss On Disposal Of Assets And Impairments

No definition available.

Name:	wcn_GainLossOnDisposalOfAssetsAndImpairments
Namespace Prefix:	wcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The fair value of liabilities assumed and notes issued to sellers of businesses acquired.

No definition available.

Name:	wcn_LiabilitiesAssumedAndNotesPayableIssuedToSellersOfBusinessesAcquired
Namespace Prefix:	wcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Payment Of Contingent Consideration Recorded At Acquisition Date

No definition available.

Name:	wcn_PaymentOfContingentConsiderationRecordedAtAcquisitionDate
Namespace Prefix:	wcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Payment of contingent consideration recorded in earnings.

No definition available.

Name:	wcn_PaymentOfContingentConsiderationRecordedInEarnings
Namespace Prefix:	wcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Proceeds from adjustment to acquisition consideration.

No definition available.