Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Net income (loss)	$ 142,893	$ 125,577
Other comprehensive income (loss), before tax:
Foreign currency translation adjustment	(184,717)	42,180
Other comprehensive income (loss), before tax	(243,183)	23,987
Income tax (expense) benefit related to items of other comprehensive income (loss)	15,494	4,821
Other comprehensive income (loss), net of tax	(227,689)	28,808
Comprehensive income	(84,796)	154,385
Plus (less): Comprehensive loss (income) attributable to noncontrolling interests	142	45
Comprehensive income attributable to Waste Connections	(84,654)	154,430
Interest Rate Swap [Member]
Other comprehensive income (loss), before tax:
Amounts reclassified, gross	(440)	(2,472)
Change in fair value, gross	$ (58,026)	$ (15,721)

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