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Net Income Per Share Information (Basic and Diluted Net Income Per Common Share) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income attributable to Waste Connections for basic and diluted earnings per share	$ 14,874	$ 44,842
Denominator:
Basic shares outstanding	175,374,630	122,778,290
Dilutive effect of warrants	42,218	27,383
Dilutive effect of restricted share units	518,634	644,911
Diluted shares outstanding	175,935,482	123,450,584

X

- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

+ References

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-Publisher FASB
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