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Stock And Stock-Based Incentive Plans (Composition Of Share-Based Compensation Expense - By Grant Type) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Feb. 28, 2021 | Feb. 29, 2020 | Feb. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | $ 124,211 | $ 110,757 | $ 76,684
Stock Options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | 31,500 | 30,166 | 29,992
Cash-Settled Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | 72,243 | 60,739 | 29,141
Stock-Settled Market Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | 15,596 | 12,874 | 12,683
Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | 489 | 2,559 | 1,733
Deferred Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | 1,925 | 2,500 | 1,155
Restricted Stock Awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | 147 | 23 | 307
Employee Stock Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | 2,311 | 1,896 | 1,673
Total other share-based incentives |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense, before income taxes | $ 4,872 | $ 6,978 | $ 4,868

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