Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation - Weighted Average Grant-Date Fair Value of Stock Options (Details)

v3.23.1
Stock-Based Employee Compensation - Weighted Average Grant-Date Fair Value of Stock Options (Details) - Long-Term Stock Incentive Plan - Stock options - $ / shares
12 Months Ended
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2021
Weighted average assumptions to estimate fair value of equity instruments using Black-Scholes option-pricing model      
Grant-date fair value (in dollars per share) $ 73.16 $ 59.27 $ 31.26
Expected life 6 years 3 months 18 days 6 years 3 months 18 days 6 years 3 months 18 days
Expected volatility 27.60% 27.80% 26.60%
Risk-free interest rate 3.00% 1.20% 0.50%
Expected dividend yield 1.30% 1.30% 1.90%