Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation - Summary of Restricted Stock and Performance Share Activity and Fair Value (Details)

v3.23.1
Stock-Based Employee Compensation - Summary of Restricted Stock and Performance Share Activity and Fair Value (Details) - Long-Term Stock Incentive Plan - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2021
Restricted Stock Units      
Number      
Balance at beginning of period (in shares) 291,171 311,358 271,143
Granted (in shares) 128,743 113,686 178,550
Vested (in shares) (113,541) (107,626) (118,220)
Forfeited (in shares) (14,514) (26,247) (20,115)
Balance at end of period (in shares) 291,859 291,171 311,358
Weighted Average Grant-Date Fair Value      
Balance at beginning of period (in dollars per share) $ 202.68 $ 183.74 $ 196.58
Granted (in dollars per share) 252.53 236.19 165.57
Vested (in dollars per share) 202.64 184.81 185.75
Forfeited (in dollars per share) 221.33 196.41 183.77
Balance at end of period (in dollars per share) $ 223.75 $ 202.68 $ 183.74
Fair value of shares vested $ 27.9 $ 25.8 $ 19.2
Performance Share Units      
Number      
Balance at beginning of period (in shares) 86,641 226,463 221,749
Granted (in shares) 32,976 27,029 39,781
Performance achievement (in shares) (7,415) (148,495) (1,517)
Vested (in shares) (21,245) (12,499) (26,768)
Forfeited (in shares) (5,308) (5,857) (6,782)
Balance at end of period (in shares) 85,649 86,641 226,463
Weighted Average Grant-Date Fair Value      
Balance at beginning of period (in dollars per share) $ 268.12 $ 223.85 $ 231.49
Granted (in dollars per share) 395.55 318.71 202.53
Performance achievement (in dollars per share) 316.81 210.36 250.30
Vested (in dollars per share) 298.25 279.67 250.30
Forfeited (in dollars per share) 323.44 229.81 238.06
Balance at end of period (in dollars per share) $ 302.06 $ 268.12 $ 223.85
Fair value of shares vested $ 5.2 $ 3.0 $ 4.3