Acquisitions - Summary of Pro Forma Financial Information (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Revenues									$ 556,572,889	$ 216,432,605	$ 62,493,680
Net income (loss)	$ 22,464,807	$ 9,643,929	$ (12,909,505)	$ (4,206,264)	$ (14,070,509)	$ (14,590,793)	$ (20,892,049)	$ (9,563,056)	$ 14,992,967	(59,116,407)	(5,243,917)
Revenues, net of discounts										258,471,673	139,771,855
Net income (loss) attributable to Green Thumb Industries Inc.										(8,394,854)	(24,006,529)
Advanced Grow Labs LLC [Member]
Business Acquisition [Line Items]
Revenues										16,377,199	17,016,743
Net income (loss)										3,612,455	7,497,696
Revenues, net of discounts										18,516,074	17,016,743
Net income (loss) attributable to Green Thumb Industries Inc.										4,586,122	7,497,696
Integral Associates, LLC [Member]
Business Acquisition [Line Items]
Revenues										39,246,745	60,261,432
Net income (loss)										(6,375,800)	13,218,159
Revenues, net of discounts										79,146,937	60,261,432
Net income (loss) attributable to Green Thumb Industries Inc.										(1,110,610)	13,218,159
Green Thumb Industries [Member]
Business Acquisition [Line Items]
Revenues, net of discounts										160,808,662	62,493,680
Net income (loss) attributable to Green Thumb Industries Inc.										(56,353,062)	(5,243,917)
Pro Forma [Member]
Business Acquisition [Line Items]
Net income (loss) attributable to Green Thumb Industries Inc.										$ (61,272,404)	$ (8,534,591)