Fair Value Measurements (Schedule Of Items Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands	May 31, 2025	Feb. 28, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market securities	$ 901,898	$ 842,691
Mutual fund investments	30,043	27,495
Total assets at fair value	$ 935,412	$ 882,575
Percent of total assets at fair value	100.00%	100.00%
Percent of total assets	3.40%	3.20%
Total liabilities at fair value	$ (8,916)	$ (8,728)
Percent of total liabilities	0.00%	0.00%
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market securities	$ 901,898	$ 842,691
Mutual fund investments	30,043	27,495
Total assets at fair value	$ 931,941	$ 870,186
Percent of total assets at fair value	99.60%	98.60%
Percent of total assets	3.40%	3.20%
Total liabilities at fair value	$ 0	$ 0
Percent of total liabilities	0.00%	0.00%
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	$ 3,371	$ 12,389
Percent of total assets at fair value	0.40%	1.40%
Percent of total assets	0.00%	0.00%
Total liabilities at fair value	$ (8,916)	$ (8,728)
Percent of total liabilities	0.00%	0.00%
Designated As Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 2,830	$ 10,813
Liabilities: Derivative instruments	(8,916)	(8,728)
Designated As Hedging Instrument | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Liabilities: Derivative instruments	0	0
Designated As Hedging Instrument | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	2,830	10,813
Liabilities: Derivative instruments	(8,916)	(8,728)
Not Designated as Hedging Instrument [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	541	1,576
Not Designated as Hedging Instrument [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Not Designated as Hedging Instrument [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 541	$ 1,576