Annual report pursuant to Section 13 and 15(d)

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

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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. 29, 2024
Feb. 28, 2023
Feb. 28, 2022
Weighted average assumptions to estimate fair value of equity instruments using Black-Scholes option-pricing model      
Grant-date fair value (in dollars per share) $ 64.75 $ 73.16 $ 59.27
Expected life 5 years 9 months 18 days 6 years 3 months 18 days 6 years 3 months 18 days
Expected volatility 28.80% 27.60% 27.80%
Risk-free interest rate 3.60% 3.00% 1.20%
Expected dividend yield 1.60% 1.30% 1.30%