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Net Income Per Share Information - Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Numerator:
Net income attributable to Waste Connections for basic and diluted earnings per share	$ 241,510	$ 230,054
Denominator:
Basic shares outstanding	258,193,975	257,801,116
Dilutive effect of equity-based awards	710,831	681,357
Diluted shares outstanding	258,904,806	258,482,473

X

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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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