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, 2022	Feb. 28, 2021	Feb. 29, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net earnings	$ 1,151,297	$ 746,919	$ 888,433
Weighted average common shares outstanding (in shares)	162,410	163,183	164,836
Weighted average common shares and dilutive potential common shares (in shares)	165,176	165,133	166,820
Basic net earnings per share (in dollars per share)	$ 7.09	$ 4.58	$ 5.39
Diluted net earnings per share (in dollars per share)	$ 6.97	$ 4.52	$ 5.33
Stock Options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares (in shares)	2,268	1,543	1,580
Stock-Settled Market Stock Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares (in shares)	498	407	404