Net Earnings Per Share (Basic And Dilutive Net Earnings Per Share Reconciliations) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net earnings	$ 484,762	$ 1,151,297	$ 746,919
Weighted average common shares outstanding (in shares)	158,800	162,410	163,183
Weighted average common shares and dilutive potential common shares (in shares)	159,771	165,176	165,133
Basic net earnings per share (in dollars per share)	$ 3.05	$ 7.09	$ 4.58
Diluted net earnings per share (in dollars per share)	$ 3.03	$ 6.97	$ 4.52
Stock Options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares (in shares)	688	2,268	1,543
Stock-Settled Market Stock Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares (in shares)	283	498	407