Earnings (Loss) Per Share - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended				6 Months Ended
		Aug. 31, 2023		Aug. 31, 2022		Aug. 31, 2023		Aug. 31, 2022
Earnings Per Share [Abstract]
Net loss for basic loss per share available to common shareholders		$ (42)		$ (54)		$ (53)		$ (235)
Debentures fair value impact on EPS		0	[1]	(10)	[2]	0	[1]	(56)	[2]
Interest expense, debt adjustment impact on EPS		0	[1]	2	[2]	0	[1]	3	[2]
Net loss for diluted loss per share available to common shareholders		$ (42)		$ (62)		$ (53)		$ (288)
Weighted-average number of shares outstanding (000's) - basic and diluted (in shares)	[3]	583,524		577,314		583,171		577,097
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities (in shares)		0	[1]	60,833	[2]	0	[1]	60,833	[2]
Weighted Average Number of Shares Outstanding, Diluted, Total (in shares)		583,524		638,147		583,171		637,930
Earnings (Loss) Per Share, Basic (in usd per share)		$ (0.07)		$ (0.09)		$ (0.09)		$ (0.41)
Earnings (Loss) Per Share, Diluted (in usd per share)		$ (0.07)		$ (0.10)		$ (0.09)		$ (0.45)

[1] The Company has not presented the dilutive effect of the Debentures using the if-converted method in the calculation of diluted loss per share for the three and six months ended August 31, 2023, as to do so would be antidilutive. See Note 5 for details on the Debentures.

[2] The Company has presented the dilutive effect of the Debentures using the if-converted method, assuming conversion at the beginning of the quarter for the three and six months ended August 31, 2022. Accordingly, to calculate diluted loss per share, the Company adjusted net loss by eliminating the fair value adjustment made to the Debentures and interest expense incurred on the Debentures for the three and six months ended August 31, 2022, and added the number of shares that would have been issued upon conversion to the diluted weighted average number of shares outstanding. See Note 5 for details on the Debentures.

[3] The Company has not presented the dilutive effect of in-the-money options and RSUs that will be settled upon vesting by the issuance of new common shares in the calculation of diluted loss per share for the three and six months ended August 31, 2023 and August 31, 2022, as to do so would be antidilutive.