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Income Taxes - Income (Loss) from Continuing Operations Before Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
Income before income taxes:      
Canadian $ 15 $ 63 $ 413
Foreign (163) 14 (7)
Income (loss) from continuing operations before income taxes $ (148) $ 77 $ 406