Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	21.00%	32.70%
State and local income taxes, net of federal benefit	3.40%	3.40%	3.10%
2017 Tax Act	0.00%	(0.10%)	3.10%
Share-based compensation	(1.10%)	(0.30%)	(1.30%)
Nondeductible and other items	0.70%	0.70%	0.20%
Credits	(0.50%)	(0.40%)	(0.20%)
Effective income tax rate	23.50%	24.30%	37.60%