Divestitures - Schedule of Derecognized Assets and Liabilities (Details) - CAD ($) $ in Thousands	Mar. 31, 2023	Mar. 31, 2022	Jan. 31, 2022	Mar. 31, 2021	Feb. 23, 2021	Mar. 31, 2020
Class Of Stock [Line Items]
Warrant value	$ 2,581,788	$ 2,581,788		$ 2,568,438		$ 2,638,951
Preferred shares in Vert Mirabel					$ 22,600
Common shares in Vert Mirabel					9,075
Total acquired assets					380,175
Consideration paid in shares					(170,284)
Consideration paid in cash					(115,000)
Total Assets and Liabilities					94,891
Cash and cash equivalents			$ 19,338		37,801
Amounts receivable, net					4,327
Prepaid expenses and other assets					995
Equity method investments					5,114
Other financial assets					417,256
Property, plant and equipment					729
Intangible assets					86
Accounts payable					(22,038)
Other accrued expenses and liabilities					(1,703)
Other current liabilities					(32,653)
Other long-term liabilities					(303)
Noncontrolling interests and other					(315,144)
Disposal Group, Including Discontinued Operation, Liabilities					94,467
Gain on completion of RIV Arrangement					424
TerrAscend
Class Of Stock [Line Items]
TerrAscend Exchangeable Shares					291,500
Warrant value					32,000
TerrAscend loan					10,000
Tweed N B
Class Of Stock [Line Items]
Settlement of Tweed NB obligations to RCC					$ 15,000