Capital Stock - Changes in Issued and Outstanding Common Shares (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023
Common Stock [Roll Forward]
Capital stock outstanding, Shares, Beginning Balance			589,232,539
Capital stock outstanding, Shares, Ending Balance	590,727,996		590,727,996
Common Stock, Amount [Roll Forward]
Stock-based compensation	$ 7	$ 11	$ 15	$ 20
Employee share purchase plan			$ 1	2
Capital Stock and Additional Paid-in Capital
Common Stock [Roll Forward]
Capital stock outstanding, Shares, Beginning Balance			589,233,000
Common shares issued for restricted share unit settlements			940,000
Common shares issued for employee share purchase plan			555,000
Capital stock outstanding, Shares, Ending Balance	590,728,000		590,728,000
Common Stock, Amount [Roll Forward]
Common Stock, Value, Outstanding			$ 2,948
Stock-based compensation	$ 7	$ 11	15	20
Employee share purchase plan			1	$ 2
Common Stock, Value, Outstanding	$ 2,964		$ 2,964