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						9 Months Ended
	Nov. 30, 2022	Aug. 31, 2022	May 31, 2022	Nov. 30, 2021	Aug. 31, 2021	May 31, 2021	Nov. 30, 2022	Nov. 30, 2021
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Net earnings	$ 37,580	$ 125,905	$ 252,265	$ 269,438	$ 285,267	$ 436,756	$ 415,750	$ 991,461
Weighted average common shares outstanding, shares	158,003			162,006			159,044	162,710
Weighted average common shares and dilutive potential common shares, shares	158,536			164,873			160,195	165,606
Basic net earnings per share (in dollars per share)	$ 0.24			$ 1.66			$ 2.61	$ 6.09
Diluted net earnings per share (in dollars per share)	$ 0.24			$ 1.63			$ 2.60	$ 5.99
Stock options
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Dilutive potential common shares, shares	268			2,373			857	2,391
Stock-settled stock units and awards
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Dilutive potential common shares, shares	265			494			294	505