Capital Stock - Changes in Issued and Outstanding Common Shares (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2024	Nov. 30, 2023
Common Stock [Roll Forward]
Capital stock outstanding, Shares, Beginning Balance			589,232,539
Capital stock outstanding, Shares, Ending Balance	591,583,200		591,583,200
Common Stock, Amount [Roll Forward]
Stock-based compensation	$ 6	$ 8	$ 21	$ 28
Employee share purchase plan	$ 2	2	$ 3	4
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			1,187,000
Common shares issued for employee share purchase plan			1,163,000
Capital stock outstanding, Shares, Ending Balance	591,583,000		591,583,000
Common Stock, Amount [Roll Forward]
Common Stock, Value, Outstanding			$ 2,948
Stock-based compensation	$ 6	8	21	28
Employee share purchase plan	2	$ 2	3	$ 4
Common Stock, Value, Outstanding	$ 2,972		$ 2,972