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Share-Based Compensation Plans Share Based Compensation Expense in SG&A (Details) - USD ($)
$ in Thousands
3 Months Ended
May 31, 2021
May 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense, net of tax $ 13,161 $ 8,685
SG&A    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense 14,020 9,291
Less income tax benefits (859) (606)
Stock options | SG&A    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense 0 12
Service Condition Awards | SG&A    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense 1,940 1,920
Performance Condition Awards | SG&A    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense 10,023 6,691
Market Condition Awards | SG&A    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense 1,129 0
Employee stock purchase plan | SG&A    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense 768 486
Directors stock compensation | SG&A    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based compensation expense $ 160 $ 182