Segmented Information - Summary of Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - CAD ($) $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2022	Dec. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net revenue	$ 104,031	$ 105,418	$ 105,920	$ 211,338	$ 315,369	$ 402,904	$ 510,321	$ 546,649
Gross margin	(95)	(7,955)	(5,586)	(13,541)	(13,636)	(104,140)	(203,136)	66,960
Selling, general and administrative expenses						456,225	472,756	575,389
Share-based compensation		14,581		20,020	26,448	31,188	47,525	91,149
Expected credit losses on financial assets and related charges								109,480
Asset impairment and restructuring costs		101,369		1,829,354	1,851,613	2,256,742	369,339	534,398
Operating loss	(151,418)	(249,747)	(1,842,423)	(2,092,170)	(2,243,588)	(2,848,295)	(1,092,756)	(1,243,456)
Loss from equity method investments							(100)	(52,629)
Other income (expense), net						(466,025)	753,341	(387,876)
Loss before income taxes	$ (264,758)	$ (297,591)	$ (2,088,001)	$ (2,385,592)	$ (2,650,350)	(3,314,320)	(339,515)	(1,683,961)
Canada Cannabis
Segment Reporting Information [Line Items]
Net revenue						187,067	257,910	285,049
Gross margin						(95,291)	(212,820)	(8,435)
Rest-of-world Cannabis
Segment Reporting Information [Line Items]
Net revenue						38,949	79,306	93,631
Gross margin						(3,322)	(28,875)	29,687
Storz & Bickel
Segment Reporting Information [Line Items]
Net revenue						64,845	85,410	80,998
Gross margin						26,112	37,284	34,231
BioSteel
Segment Reporting Information [Line Items]
Net revenue						69,649	34,622	28,530
Gross margin						(40,613)	(15,722)	1,689
This Works
Segment Reporting Information [Line Items]
Net revenue						26,029	32,296	33,314
Gross margin						10,205	14,800	17,350
Other Consumer Products
Segment Reporting Information [Line Items]
Net revenue						16,365	20,777	25,127
Gross margin						$ (1,231)	$ 2,197	$ (7,562)