Income Taxes - Provision for Income Taxes from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Current
Canadian	$ (2)	$ 2	$ 2
Foreign	(7)	3	7
Deferred
Foreign	0	(1)	(25)
Provision for (recovery of) income taxes	$ (9)	$ 4	$ (16)