Earnings (Loss) Per Share - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Earnings Per Share [Abstract]
Net income (loss) for basic and diluted earnings (loss) per share available to common shareholders from continuing operations	$ (152)	$ 93	$ 405
Debentures fair value impact on EPS	66	117	0
Interest expense, debt	23	24	0
Net Income (Loss) Available to Common Stockholders, Diluted	$ (195)	$ 0	$ 405
Weighted-average number of shares outstanding (000's) - basic and diluted	553,861,000	540,477,000	532,888,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	11,308,000	12,998,000
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	60,500,000	60,500,000	0
Incremental common shares attributable to exchange shares	0	4,182,000	0
Weighted Average Number of Shares Outstanding, Diluted	614,361,000	616,467,000	545,886,000
Earnings Per Share, Basic	$ (0.27)	$ 0.17	$ 0.76
Earnings Per Share, Diluted	$ (0.32)	$ 0.00	$ 0.74
Earnings Per Share [Line Items]
Number of exchanges shares remaining to be issued	2,802,067
Employee Stock Option [Member]
Earnings Per Share [Line Items]
Outstanding Options In-the-Money		8,985,836	790,918
Restricted Share Units (RSUs)
Earnings Per Share [Line Items]
Outstanding RSUs In-the-Money		9,300,191	14,068,069