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Capital Stock - Subsequent event (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
	Dec. 01, 2025	Nov. 30, 2025	Nov. 30, 2025	Nov. 30, 2024	Dec. 16, 2025	Feb. 28, 2025
Equity [Abstract]
Common outstanding (in shares)		590,392,106	590,392,106			596,230,655
Class of Stock [Line Items]
Common outstanding (in shares)		590,392,106	590,392,106			596,230,655
Stock Repurchased During Period, Shares	200,000	8,600,000
Common shares repurchased		$ (4.0)	$ (34.0)	$ 0.0
Capital Stock and Additional Paid-in Capital
Equity [Abstract]
Common outstanding (in shares)		590,392,000	590,392,000			596,231,000
Class of Stock [Line Items]
Common outstanding (in shares)		590,392,000	590,392,000			596,231,000
Stock Repurchased During Period, Shares			8,562,000
Common shares repurchased	$ 1.0
1.75% Debenture
Class of Stock [Line Items]
Conversion of stock (in shares)			51,500,000
Voting Common Stock [Member] | Subsequent Event [Member]
Equity [Abstract]
Common outstanding (in shares)					590,000,000
Class of Stock [Line Items]
Common outstanding (in shares)					590,000,000
Restricted Share Units (RSUs) | Subsequent Event [Member]
Equity [Abstract]
Common outstanding (in shares)					16,800,000
Class of Stock [Line Items]
Common outstanding (in shares)					16,800,000
Deferred Share Unit | Subsequent Event [Member]
Equity [Abstract]
Common outstanding (in shares)					1,600,000
Class of Stock [Line Items]
Common outstanding (in shares)					1,600,000

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