Other Financial Assets - Summary of Changes in Other Financial Assets (Details) - CAD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Schedule Of Investments [Line Items]
Beginning balance	$ 568,292	$ 800,328
Additions	2,156	253,659
Fair value changes	(124,806)	(424,115)
Foreign currency translation adjustments	(929)	30,162
Other	(7,084)	(91,742)
Ending balance	437,629	568,292
Acreage1 | Fixed Shares Option and Floating Shares Agreement
Schedule Of Investments [Line Items]
Beginning balance	55,382
Fair value changes	(45,408)	55,382
Foreign currency translation adjustments	26
Ending balance	10,000	55,382
TerrAscend Exchangeable Shares | Exchangeable Shares
Schedule Of Investments [Line Items]
Beginning balance	93,000	229,000
Additions		51,000
Fair value changes	26,936	(186,489)
Foreign currency translation adjustments	64	(511)
Ending balance	120,000	93,000
TerrAscend Canada - October 2019 | Term loan / debenture
Schedule Of Investments [Line Items]
Beginning balance		10,280
Fair value changes		(146)
Other		(10,134)
TerrAscend Canada March 2020 | Term loan / debenture
Schedule Of Investments [Line Items]
Beginning balance		49,890
Fair value changes		(4,804)
Other		(45,086)
Arise Bioscience | Term loan / debenture
Schedule Of Investments [Line Items]
Beginning balance		13,343
Fair value changes		(1,767)
Foreign currency translation adjustments		1,268
Other		(12,844)
TerrAscend - October 2019 | Warrants
Schedule Of Investments [Line Items]
Beginning balance		3,730
Fair value changes		(3,372)
Other		(358)
TerrAscend - March 2020 | Warrants
Schedule Of Investments [Line Items]
Beginning balance		60,740
Fair value changes		(46,376)
Other		(14,364)
TerrAscend - December 2020 | Warrants
Schedule Of Investments [Line Items]
Beginning balance		3,460
Fair value changes		(2,246)
Other		(1,214)
TerrAscend - December 2022 | Warrants
Schedule Of Investments [Line Items]
Beginning balance	26,000
Additions		33,000
Fair value changes	6,574	(7,000)
Foreign currency translation adjustments	(74)
Ending balance	32,500	26,000
TerrAscend | Equity Option
Schedule Of Investments [Line Items]
Beginning balance	1,600	6,300
Fair value changes	400	(4,700)
Ending balance	2,000	1,600
Wana | Equity Option
Schedule Of Investments [Line Items]
Beginning balance	239,078	372,343
Fair value changes	(83,247)	(154,936)
Foreign currency translation adjustments	(1,097)	21,671
Other	(4,968)
Ending balance	149,766	239,078
Jetty | Equity Option
Schedule Of Investments [Line Items]
Beginning balance	75,014
Additions		90,120
Fair value changes	(15,057)	(19,915)
Foreign currency translation adjustments	(42)	4,809
Ending balance	59,915	75,014
Acreage Hempco1 | Debenture
Schedule Of Investments [Line Items]
Beginning balance	29,262	28,824
Fair value changes	(15,775)	2,361
Foreign currency translation adjustments	155	2,295
Other	(1,862)	(4,218)
Ending balance	11,780	29,262
Acreage Debt Option Premium | Equity Option
Schedule Of Investments [Line Items]
Beginning balance	35,479
Additions		38,048
Fair value changes	2,012	(3,041)
Foreign currency translation adjustments	83	472
Ending balance	37,574	35,479
Acreage Tax Receivable Agreement | Other
Schedule Of Investments [Line Items]
Beginning balance	3,109
Additions		41,491
Fair value changes	(1,776)	(38,035)
Foreign currency translation adjustments	(46)	(347)
Ending balance	1,287	3,109
Other At Fair Value Through Net Income (Loss) | Various
Schedule Of Investments [Line Items]
Beginning balance	1,870	10,396
Additions	2,156
Fair value changes	535	(9,031)
Foreign currency translation adjustments	2	505
Other	(122)
Ending balance	4,441	1,870
Other - Classified as Held for Investment | Loan Receivable
Schedule Of Investments [Line Items]
Beginning balance	8,498	12,022
Other	(132)	(3,524)
Ending balance	$ 8,366	$ 8,498