Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation (Details 4)

v3.4.0.3
Stock-Based Employee Compensation (Details 4) - Long Term Stock Incentive Plan [Member] - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Feb. 29, 2016
Feb. 28, 2015
Feb. 28, 2014
Restricted stock awards [Member]      
Number of Restricted Stock Awards [Rollforward]      
Number of Nonvested Awards, Outstanding, beginning of period (in shares) 117,054 408,744 1,128,024
Number of Nonvested Awards, Granted (in shares) 4,984 6,424 12,375
Number of Nonvested Awards, Vested (in shares) (116,810) (289,688) (697,994)
Number of Nonvested Awards, Forfeited (in shares) (244) (8,426) (33,661)
Number of Nonvested Awards, Outstanding, end of period (in shares) 4,984 117,054 408,744
Weighted Average Grant-Date Fair Value [Rollforward]      
Weighted Average Grant-Date Fair Value, Outstanding, beginning of period $ 25.15 $ 20.18 $ 17.16
Weighted Average Grant-Date Fair Value, Granted 119.37 87.13 50.90
Weighted Average Grant-Date Fair Value, Vested 25.16 20.90 15.90
Weighted Average Grant-Date Fair Value, Forfeited 20.60 20.43 19.00
Weighted Average Grant-Date Fair Value, Outstanding, end of period $ 119.37 $ 25.15 $ 20.18
Fair value of shares vested $ 13.7 $ 23.6 $ 34.4
Restricted stock units [Member]      
Number of Restricted Stock Awards [Rollforward]      
Number of Nonvested Awards, Outstanding, beginning of period (in shares) 1,063,726 1,104,580 721,503
Number of Nonvested Awards, Granted (in shares) 230,742 250,923 656,710
Number of Nonvested Awards, Vested (in shares) (269,903) (241,895) (218,306)
Number of Nonvested Awards, Forfeited (in shares) (107,556) (49,882) (55,327)
Number of Nonvested Awards, Outstanding, end of period (in shares) 917,009 1,063,726 1,104,580
Weighted Average Grant-Date Fair Value [Rollforward]      
Weighted Average Grant-Date Fair Value, Outstanding, beginning of period $ 51.16 $ 39.87 $ 23.65
Weighted Average Grant-Date Fair Value, Granted 122.60 80.72 50.74
Weighted Average Grant-Date Fair Value, Vested 44.48 32.34 21.30
Weighted Average Grant-Date Fair Value, Forfeited 58.65 41.05 30.58
Weighted Average Grant-Date Fair Value, Outstanding, end of period $ 70.23 $ 51.16 $ 39.87
Fair value of shares vested $ 31.7 $ 19.7 $ 10.7
Performance share units [Member]      
Number of Restricted Stock Awards [Rollforward]      
Number of Nonvested Awards, Outstanding, beginning of period (in shares) 617,684 798,600 729,010
Number of Nonvested Awards, Granted (in shares) 155,671 108,290 298,710
Number of Nonvested Awards, Vested (in shares) (439,440) (536,520) (577,230)
Number of Nonvested Awards, Forfeited (in shares) (52,374) (20,946) (31,670)
Number of Nonvested Awards, Outstanding, end of period (in shares) 501,261 617,684 798,600
Number of Nonvested Awards, Performance achievement (in shares) 219,720 268,260 379,780
Weighted Average Grant-Date Fair Value [Rollforward]      
Weighted Average Grant-Date Fair Value, Outstanding, beginning of period $ 58.21 $ 39.67 $ 25.86
Weighted Average Grant-Date Fair Value, Granted 146.25 99.64 57.88
Weighted Average Grant-Date Fair Value, Vested 38.47 21.65 16.88
Weighted Average Grant-Date Fair Value, Forfeited 75.42 47.21 34.98
Weighted Average Grant-Date Fair Value, Outstanding, end of period 92.41 58.21 39.67
Weighted Average Grant-Date Fair Value, Performance adjustment $ 38.47 $ 21.65 $ 16.83
Fair value of shares vested $ 51.5 $ 43.6 $ 28.5