Annual report pursuant to Section 13 and 15(d)

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

v3.21.1
Stock-Based Employee Compensation - Summary of Restricted Stock Activity and Fair Value (Details) - Long-Term Stock Incentive Plan - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Restricted stock awards      
Number of Restricted Stock Awards [Rollforward]      
Number of Nonvested Awards, Outstanding, beginning of period (in shares) 0 3,914 3,848
Number of Nonvested Awards, Granted (in shares) 0 0 3,914
Number of Nonvested Awards, Vested (in shares) 0 (3,470) (3,848)
Number of Nonvested Awards, Forfeited (in shares) 0 (444) 0
Number of Nonvested Awards, Outstanding, end of period (in shares) 0 0 3,914
Weighted Average Grant-Date Fair Value [Rollforward]      
Weighted Average Grant-Date Fair Value, Outstanding, beginning of period (in dollars per share) $ 0 $ 214.29 $ 197.18
Weighted Average Grant-Date Fair Value, Granted (in dollars per share) 0 0 214.29
Weighted Average Grant-Date Fair Value, Vested (in dollars per share) 0 214.34 197.18
Weighted Average Grant-Date Fair Value, Forfeited (in dollars per share) 0 213.85 0
Weighted Average Grant-Date Fair Value, Outstanding, end of period (in dollars per share) $ 0 $ 0 $ 214.29
Fair value of shares vested $ 0.0 $ 0.7 $ 0.8
Restricted stock units      
Number of Restricted Stock Awards [Rollforward]      
Number of Nonvested Awards, Outstanding, beginning of period (in shares) 271,143 314,252 286,658
Number of Nonvested Awards, Granted (in shares) 178,550 138,472 108,545
Number of Nonvested Awards, Vested (in shares) (118,220) (141,211) (39,717)
Number of Nonvested Awards, Forfeited (in shares) (20,115) (40,370) (41,234)
Number of Nonvested Awards, Outstanding, end of period (in shares) 311,358 271,143 314,252
Weighted Average Grant-Date Fair Value [Rollforward]      
Weighted Average Grant-Date Fair Value, Outstanding, beginning of period (in dollars per share) $ 196.58 $ 181.62 $ 157.29
Weighted Average Grant-Date Fair Value, Granted (in dollars per share) 165.57 203.32 226.97
Weighted Average Grant-Date Fair Value, Vested (in dollars per share) 185.75 168.68 129.57
Weighted Average Grant-Date Fair Value, Forfeited (in dollars per share) 183.77 200.87 182.00
Weighted Average Grant-Date Fair Value, Outstanding, end of period (in dollars per share) $ 183.74 $ 196.58 $ 181.62
Fair value of shares vested $ 19.2 $ 29.9 $ 9.0
Performance share units      
Number of Restricted Stock Awards [Rollforward]      
Number of Nonvested Awards, Outstanding, beginning of period (in shares) 221,749 259,464 227,720
Number of Nonvested Awards, Granted (in shares) 39,781 60,031 172,468
Number of Nonvested Awards, Performance achievement (in shares) (1,517) (17,035) (281)
Number of Nonvested Awards, Vested (in shares) (26,768) (46,454) (106,368)
Number of Nonvested Awards, Forfeited (in shares) (6,782) (34,257) (34,075)
Number of Nonvested Awards, Outstanding, end of period (in shares) 226,463 221,749 259,464
Weighted Average Grant-Date Fair Value [Rollforward]      
Weighted Average Grant-Date Fair Value, Outstanding, beginning of period (in dollars per share) $ 231.49 $ 213.27 $ 177.90
Weighted Average Grant-Date Fair Value, Granted (in dollars per share) 202.53 253.72 222.92
Weighted Average Grant-Date Fair Value, Performance achievement (in dollars per share) 250.30 168.00 155.72
Weighted Average Grant-Date Fair Value, Vested (in dollars per share) 250.30 156.80 147.34
Weighted Average Grant-Date Fair Value, Forfeited (in dollars per share) 238.06 239.48 215.63
Weighted Average Grant-Date Fair Value, Outstanding, end of period (in dollars per share) $ 223.85 $ 231.49 $ 213.27
Fair value of shares vested $ 4.3 $ 9.9 $ 24.4