Other Income (Expense), Net - Schedule of Other Income (Expense), Net (Details) - CAD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Dec. 31, 2024 |
Sep. 30, 2024 |
Jun. 30, 2024 |
Dec. 31, 2023 |
Sep. 30, 2023 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Other Income and Expenses [Abstract] | |||||||||||||||||
| Fair value changes on Canopy USA related assets | $ (67,010) | $ (397,312) | $ (125,341) | ||||||||||||||
| Fair value changes on other financial assets | (2,915) | 535 | |||||||||||||||
| Fair value changes on debt | (35,843) | ||||||||||||||||
| Fair value changes on derivative liability | 8,696 | 89,237 | (31,977) | ||||||||||||||
| Fair value changes on acquisition related contingent consideration and other | (35,525) | 12,315 | |||||||||||||||
| (Loss) gain related to settlement of debt | (14,593) | 22,340 | (12,134) | ||||||||||||||
| Interest income | 9,997 | 8,815 | 16,235 | ||||||||||||||
| Interest expense | (38,192) | (74,569) | (105,352) | ||||||||||||||
| Foreign currency gain (loss) | (624) | 1,486 | 704 | ||||||||||||||
| Other income (expense), net | 500 | (2,174) | 1,806 | ||||||||||||||
| Other income (expense), net | $ (31,627) | $ 12,130 | $ (21,946) | $ (73,945) | $ (65,975) | $ (72,626) | $ (159,904) | $ (119,720) | $ (9,816) | $ (138,602) | $ (73,619) | $ (41,443) | $ (212,547) | $ (233,523) | $ (101,226) | $ (390,617) | $ (279,052) |