Net Earnings Per Share (Basic And Dilutive Net Earnings Per Share Reconciliations) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Aug. 31, 2022	May 31, 2022	Aug. 31, 2021	May 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Net earnings	$ 125,905	$ 252,265	$ 285,267	$ 436,756	$ 378,170	$ 722,023
Weighted average common shares outstanding, shares	158,801		162,966		159,556	163,058
Weighted average common shares and dilutive potential common shares, shares	160,218		165,643		161,015	165,969
Basic net earnings per share (in dollars per share)	$ 0.79		$ 1.75		$ 2.37	$ 4.43
Diluted net earnings per share (in dollars per share)	$ 0.79		$ 1.72		$ 2.35	$ 4.35
Stock options
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Dilutive potential common shares, shares	1,125		2,271		1,151	2,400
Stock-settled stock units and awards
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Dilutive potential common shares, shares	292		406		308	511