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Net Income Per Share Information - Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator:
Net income attributable to Waste Connections for basic and diluted earnings per share	$ 308,046	$ 229,026	$ 813,577	$ 636,047
Denominator:
Basic shares outstanding	258,023,661	257,633,703	257,939,935	257,535,408
Dilutive effect of equity-based awards	732,867	595,701	661,880	575,076
Diluted shares outstanding	258,756,528	258,229,404	258,601,815	258,110,484

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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