Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$ 60,284	$ 60,913	$ 172,407	$ 146,588
Other comprehensive income (loss), before tax:
Other comprehensive income (loss), before tax	875	552	(120)	5,203
Income tax (expense) benefit related to items of other comprehensive income	(336)	(211)	49	(1,985)
Other comprehensive income (loss), net of tax	539	341	(71)	3,218
Comprehensive income	60,823	61,254	172,336	149,806
Less: Comprehensive income attributable to noncontrolling interests	(200)	(207)	(644)	(359)
Comprehensive income attributable to Waste Connections	60,623	61,047	171,692	149,447
Interest Rate Swap [Member]
Other comprehensive income (loss), before tax:
Amounts reclassified, gross	1,313	1,424	3,267	4,203
Changes in fair value, gross	968	(1,310)	(1,536)	514
Fuel [Member] | Commodity Contract [Member]
Other comprehensive income (loss), before tax:
Amounts reclassified, gross	(214)		(841)
Changes in fair value, gross	$ (1,192)	$ 438	$ (1,010)	$ 486