Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation - Weighted Average Grant-Date Fair Value of Performance Share Units (Details)

v3.22.1
Stock-Based Employee Compensation - Weighted Average Grant-Date Fair Value of Performance Share Units (Details) - Long-Term Stock Incentive Plan - $ / shares
12 Months Ended
Feb. 28, 2022
Feb. 28, 2021
Feb. 29, 2020
Performance Share Units      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Grant-date fair value (in dollars per share) $ 318.71 $ 202.53 $ 253.72
Performance Share Units, Market Condition      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Grant-date fair value (in dollars per share) 318.71 202.53 319.56
Grant-date price (in dollars per share) $ 238.31 $ 153.02 $ 205.46
Performance period 2 years 10 months 24 days 2 years 10 months 24 days 2 years 9 months 18 days
Expected volatility 35.00% 31.70% 23.10%
Risk-free interest rate 0.30% 0.20% 2.30%
Expected dividend yield 0.00% 0.00% 0.00%