Asset Impairment and Restructuring Costs - Additional Information (Details) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Sep. 30, 2022 CAD ($) RetailStore	Jun. 30, 2022 CAD ($)	Sep. 30, 2021 CAD ($)	Sep. 30, 2022 CAD ($)	Sep. 30, 2021 CAD ($)	Mar. 31, 2022 CAD ($)
Restructuring Cost And Reserve [Line Items]
Goodwill impairment loss	$ 2,311			$ 1,727,679		$ 40,748
Number of corporate-owned retail stores | RetailStore	23
Asset impairment and restructuring costs	$ 43,968		$ 2,510	$ 1,771,953	$ 91,759
Cannabis Operations Reporting Unit
Restructuring Cost And Reserve [Line Items]
Goodwill impairment loss		$ 1,725,368