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Fair Value Measurements (Schedule Of Items Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands | Feb. 28, 2021 | Feb. 29, 2020
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Money market securities | $ 685,585 | $ 273,203
Mutual fund investments | 24,049 | 22,668
Total assets at fair value | $ 714,196 | $ 295,871
Percent of total assets at fair value | 100.00% | 100.00%
Percent of total assets | 3.30% | 1.40%
Total liabilities at fair value | $ (6,024) | $ (23,992)
Percent of total liabilities | 0.00% | 0.10%
Designated As Hedging Instrument |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives designated as hedges | $ 4,061 |
Derivative instruments designated as hedges | (6,024) | $ (23,992)
Not Designated as Hedging Instrument |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives designated as hedges | 501 |
Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Money market securities | 685,585 | 273,203
Mutual fund investments | 24,049 | 22,668
Total assets at fair value | $ 709,634 | $ 295,871
Percent of total assets at fair value | 99.40% | 100.00%
Percent of total assets | 3.30% | 1.40%
Total liabilities at fair value | $ 0 | $ 0
Percent of total liabilities | 0.00% | 0.00%
Level 1 | Designated As Hedging Instrument |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives designated as hedges | $ 0 |
Derivative instruments designated as hedges | 0 | $ 0
Level 1 | Not Designated as Hedging Instrument |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives designated as hedges | 0 |
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Money market securities | 0 | 0
Mutual fund investments | 0 | 0
Total assets at fair value | $ 4,562 | $ 0
Percent of total assets at fair value | 0.60% | 0.00%
Percent of total assets | 0.00% | 0.00%
Total liabilities at fair value | $ (6,024) | $ (23,992)
Percent of total liabilities | 0.00% | 0.10%
Level 2 | Designated As Hedging Instrument |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives designated as hedges | $ 4,061 |
Derivative instruments designated as hedges | (6,024) | $ (23,992)
Level 2 | Not Designated as Hedging Instrument |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives designated as hedges | $ 501 |

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