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Capital Stock - Subsequent event (Details) - shares	9 Months Ended
	Nov. 30, 2021	Dec. 17, 2021	Feb. 28, 2021
Equity [Abstract]
Common outstanding (in shares)	573,666,612		565,505,328
Class of Stock [Line Items]
Common outstanding (in shares)	573,666,612		565,505,328
1.75% Debenture
Class of Stock [Line Items]
Conversion of stock (in shares)	60,800,000
Voting Common Stock [Member] | Subsequent Event [Member]
Equity [Abstract]
Common outstanding (in shares)		574,000,000
Class of Stock [Line Items]
Common outstanding (in shares)		574,000,000
Employee Stock Option [Member] | Subsequent Event [Member]
Equity [Abstract]
Common outstanding (in shares)		1,000,000
Class of Stock [Line Items]
Common outstanding (in shares)		1,000,000
Restricted Share Units (RSUs) | Subsequent Event [Member]
Equity [Abstract]
Common outstanding (in shares)		12,000,000
Class of Stock [Line Items]
Common outstanding (in shares)		12,000,000
Deferred Share Unit | Subsequent Event [Member]
Equity [Abstract]
Common outstanding (in shares)		2,000,000
Class of Stock [Line Items]
Common outstanding (in shares)		2,000,000

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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