Capital Stock - Subsequent event (Details) - shares	3 Months Ended
	May 31, 2022	Jun. 21, 2022	Feb. 28, 2022
Equity [Abstract]
Common outstanding (in shares)	577,168,941		576,227,898
Class of Stock [Line Items]
Common outstanding (in shares)	577,168,941		576,227,898
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)		577,000,000
Class of Stock [Line Items]
Common outstanding (in shares)		577,000,000
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)		15,000,000
Class of Stock [Line Items]
Common outstanding (in shares)		15,000,000
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