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Fair Value Measurements (Tables)
12 Months Ended
Feb. 28, 2021
Fair Value Disclosures [Abstract]  
Schedule Of Items Measured At Fair Value On A Recurring Basis
Items Measured at Fair Value on a Recurring Basis
 As of February 28, 2021
(In thousands)Level 1Level 2Total
Assets:   
Money market securities$685,585 $— $685,585 
Mutual fund investments24,049 — 24,049 
Financial derivatives designated as hedges— 4,061 4,061 
Financial derivatives not designated as hedges— 501 501 
Total assets at fair value$709,634 $4,562 $714,196 
Percent of total assets at fair value99.4 %0.6 %100.0 %
Percent of total assets3.3 %— %3.3 %
Liabilities:   
Derivative instruments designated as hedges$— $(6,024)$(6,024)
Total liabilities at fair value$— $(6,024)$(6,024)
Percent of total liabilities— %— %— %
 
 As of February 29, 2020
(In thousands)Level 1Level 2Total
Assets:   
Money market securities$273,203 $— $273,203 
Mutual fund investments22,668 — 22,668 
Total assets at fair value$295,871 $— $295,871 
Percent of total assets at fair value100.0 %— %100.0 %
Percent of total assets1.4 %— %1.4 %
Liabilities:   
Derivative instruments designated as hedges$— $(23,992)$(23,992)
Total liabilities at fair value$— $(23,992)$(23,992)
Percent of total liabilities— %0.1 %0.1 %
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]
(In thousands)As of February 28, 2021As of February 29, 2020
Carrying value$500,000 $500,000 
Fair value$556,993 $546,197