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
	May 31, 2020	May 31, 2019
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Net earnings	$ 4,978	$ 266,744
Weighted average common shares outstanding, shares	162,673	166,324
Weighted average common shares and dilutive potential common shares, shares	163,537	167,643
Basic net earnings per share (in dollars per share)	$ 0.03	$ 1.60
Diluted net earnings per share (in dollars per share)	$ 0.03	$ 1.59
Stock options
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Dilutive potential common shares, shares	527	1,000
Stock-settled stock units and awards
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]
Dilutive potential common shares, shares	337	319