Capital Stock - Changes in Issued and Outstanding Common Shares (Details) - USD ($) $ in Millions	3 Months Ended
	May 31, 2023	May 31, 2022
Common Stock [Roll Forward]
Capital stock outstanding, Shares, Beginning Balance	582,157,203
Capital stock outstanding, Shares, Ending Balance	583,237,331
Common Stock, Amount [Roll Forward]
Exercise of stock options		$ 0
Stock-based compensation	$ 9	8
Employee share purchase plan	$ 2	3
Capital Stock and Additional Paid-in Capital
Common Stock [Roll Forward]
Capital stock outstanding, Shares, Beginning Balance	582,157,000
Exercise of stock options	52,000
Common shares issued for restricted share unit settlements	461,000
Common shares issued for employee share purchase plan	567,000
Capital stock outstanding, Shares, Ending Balance	583,237,000
Common Stock, Amount [Roll Forward]
Common Stock, Value, Outstanding	$ 2,909
Exercise of stock options		0
Stock-based compensation	9	8
Employee share purchase plan	2	$ 3
Common Stock, Value, Outstanding	$ 2,920