Pay vs Performance Disclosure - 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
Pay vs Performance Disclosure
Net Income (Loss)	$ (58,345)	$ (4,978)	$ (44,861)	$ (98,083)	$ (108,963)	$ (105,875)	$ (205,664)	$ (301,400)	$ (49,839)	$ (214,839)	$ (339,521)	$ (108,184)	$ (312,922)	$ (545,185)	$ (262,908)	$ (508,878)	$ (693,680)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details