Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation (Details 1)

v3.8.0.1
Stock-Based Employee Compensation (Details 1) - Long-Term Stock Incentive Plan [Member] - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Feb. 28, 2018
Feb. 28, 2017
Feb. 29, 2016
Number of Options [Rollforward]      
Number of Options, Outstanding, beginning of period (in shares) 8,070,255 9,541,393 13,613,615
Number of Options, Granted (in shares) 624,121 648,147 838,996
Number of Options, Exercised (in shares) (1,188,922) (1,948,236) (4,689,588)
Number of Options, Forfeited (in shares) (59,725) (170,711) (220,433)
Number of Options, Expired (in shares) (1,028) (338) (1,197)
Number of Options, Outstanding, end of period (in shares) 7,444,701 8,070,255 9,541,393
Number of Options, Exercisable (in shares) 5,983,286 6,456,382 7,348,309
Weighted Average Exercise Price [Rollforward]      
Options, Weighted Average Exercise Price, Outstanding, beginning of period (in dollars per share) $ 44.31 $ 34.03 $ 25.46
Options, Weighted Average Exercise Price, Granted (in dollars per share) 172.70 157.01 117.17
Options, Weighted Average Exercise Price, Exercised (in dollars per share) 31.86 25.79 22.25
Options, Weighted Average Exercise Price, Forfeited (in dollars per share) 136.08 109.23 71.75
Options, Weighted Average Exercise Price, Expired (in dollars per share) 36.13 31.92 21.02
Options, Weighted Average Exercise Price, Outstanding, end of period (in dollars per share) 56.33 44.31 34.03
Options, Weighted Average Exercise Price, Exercisable (in dollars per share) $ 34.12 $ 26.66 $ 21.37
Fair value of stock options vested $ 20.3 $ 20.3 $ 20.1
Intrinsic value of stock options exercised 189.9 260.4 514.9
Tax benefit realized from stock options exercised $ 59.8 $ 106.0 $ 193.5