Stock And Stock-Based Incentive Plans (Assumptions Used To Estimate Option Values) (Details)	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Dividend yield	0.00%	0.00%	0.00%
Expected volatility factor, Minimum	38.70%	31.80%	36.10%
Expected volatility factor, Maximum	53.60%	37.60%	56.10%
Weighted average expected volatility	39.50%	36.20%	38.20%
Risk-free interest rate, Minimum	0.40%	0.00%	0.10%
Risk-free interest rate, Maximum	4.70%	1.40%	0.70%
Expected term (in years)	4 years 7 months 6 days	4 years 7 months 6 days	4 years 7 months 6 days