Noncontrolling Interests - Summary of Net Change in Noncontrolling Interests (Details) - CAD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Minority Interest [Line Items]
Beginning balance			$ 3,594,297	$ 3,486,520
Comprehensive income (loss)	$ (10,105)	$ (5,273)	(14,513)	(7,736)
Net (income) loss attributable to redeemable noncontrolling interest			12,669	7,736
Share-based compensation	9,858	15,953	15,297	29,079
Ending balance	1,628,129	4,245,620	1,628,129	4,245,620
Noncontrolling Interests
Minority Interest [Line Items]
Beginning balance			4,341	4,709
Comprehensive income (loss)			(14,513)	(7,736)
Net (income) loss attributable to redeemable noncontrolling interest			12,669	7,736
Share-based compensation			459	524
Ending balance	2,956	5,233	2,956	5,233
Vert Mirabel
Minority Interest [Line Items]
Comprehensive income (loss)			1,050	587
Net (income) loss attributable to redeemable noncontrolling interest			(1,050)	(587)
BioSteel
Minority Interest [Line Items]
Beginning balance			2,497	1,658
Comprehensive income (loss)			(13,719)	(8,323)
Net (income) loss attributable to redeemable noncontrolling interest			13,719	8,323
Share-based compensation			459	524
Ending balance	$ 2,956	2,182	2,956	2,182
Other
Minority Interest [Line Items]
Beginning balance			1,844
Comprehensive income (loss)			$ (1,844)
Other Non-material Interests
Minority Interest [Line Items]
Beginning balance				3,051
Ending balance		$ 3,051		$ 3,051