Income Taxes - Components of Provision for (Recovery of) Income Tax and Income from Continuing Operations Before Income Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 28, 2022
Income Tax Disclosure [Abstract]
Statutory Canadian tax rate	26.50%	26.50%	26.50%
Expected provision for (recovery of) income taxes from continuing operations	$ (28)	$ (191)	$ 5
Differences in income taxes resulting from:
Valuation allowance	28	125	(9)
Investment tax credits			(7)
Investment tax credits	11	10
Change in unrecognized income tax benefits	(1)	1	(2)
Foreign tax rate differences	4	10	3
Non-deductible permanent difference	8	5	3
Goodwill impairment	9	65	0
Effective Income Tax Rate Reconciliation, Prior Period Adjustment	9	4	(1)
Other differences	6	5	1
Provision for (recovery of) income taxes	$ 24	$ 14	$ 7