Condensed Consolidated Statements of Net Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenues	$ 1,816,435	$ 1,533,931	$ 3,462,690	$ 2,929,874
Operating expenses:
Cost of operations	1,087,892	901,191	2,077,410	1,727,111
Selling, general and administrative	168,404	157,943	331,818	299,365
Depreciation	188,937	169,221	368,887	326,624
Amortization of intangibles	37,462	32,707	75,098	64,899
Impairments and other operating items	4,150	6,081	6,028	6,715
Operating income	329,590	266,788	603,449	505,160
Interest expense	(45,079)	(41,328)	(86,404)	(83,753)
Interest income	652	744	790	1,848
Other income (expense), net	(2,649)	(1,235)	(6,114)	2,312
Income before income tax provision	282,514	224,969	511,721	425,567
Income tax provision	(58,307)	(47,868)	(107,146)	(88,159)
Net income	224,207	177,101	404,575	337,408
Plus (less): Net loss (income) attributable to noncontrolling interests	(133)	(54)	(177)	(52)
Net income attributable to Waste Connections	$ 224,074	$ 177,047	$ 404,398	$ 337,356
Earnings per common share attributable to Waste Connections' common shareholders:
Basic	$ 0.87	$ 0.68	$ 1.57	$ 1.29
Diluted	$ 0.87	$ 0.68	$ 1.57	$ 1.29
Shares used in the per share calculations:
Basic	257,179,434	260,951,405	257,555,033	261,791,088
Diluted	257,736,745	261,418,573	258,140,714	262,269,600
Cash dividends per common share	$ 0.230	$ 0.205	$ 0.460	$ 0.410