Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation (Details 2)

v2.4.0.8
Stock-Based Employee Compensation (Details 2) (Long Term Stock Incentive Plan [Member], USD $)
12 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 29, 2012
Restricted stock awards [Member]
     
Number of Restricted Stock Awards Outstanding      
Number of Nonvested Awards Outstanding, Beginning Balance 1,128,024 1,797,888 1,810,316
Number of Nonvested Awards Outstanding, Granted 12,375 18,190 622,092
Number of Nonvested Awards Outstanding, Vested (697,994) (626,914) (529,118)
Number of Nonvested Awards Outstanding, Forfeited (33,661) (61,140) (105,402)
Number of Nonvested Awards Outstanding, Ending Balance 408,744 1,128,024 1,797,888
Weighted Average Grant-Date Fair Value      
Weighted Average Grant-Date Price, Beginning Balance $ 17.16 $ 16.72 $ 14.83
Weighted Average Grant-Date Price, Granted $ 50.90 $ 30.14 $ 20.63
Weighted Average Grant-Date Price, Vested $ 15.90 $ 16.26 $ 14.87
Weighted Average Grant-Date Price, Forfeited $ 19.00 $ 17.44 $ 16.56
Weighted Average Grant-Date Price, Ending Balance $ 20.18 $ 17.16 $ 16.72
Fair value of shares vested $ 34,427,377 $ 13,741,842 $ 11,826,372
Restricted stock units [Member]
     
Number of Restricted Stock Awards Outstanding      
Number of Nonvested Awards Outstanding, Beginning Balance 721,503 203,082 219,498
Number of Nonvested Awards Outstanding, Granted 656,710 609,080 80,970
Number of Nonvested Awards Outstanding, Vested (218,306) (66,500) (60,928)
Number of Nonvested Awards Outstanding, Forfeited (55,327) (24,159) (36,458)
Number of Nonvested Awards Outstanding, Ending Balance 1,104,580 721,503 203,082
Weighted Average Grant-Date Fair Value      
Weighted Average Grant-Date Price, Beginning Balance $ 23.65 $ 17.01 $ 15.23
Weighted Average Grant-Date Price, Granted $ 50.74 $ 25.08 $ 20.60
Weighted Average Grant-Date Price, Vested $ 21.30 $ 16.69 $ 15.43
Weighted Average Grant-Date Price, Forfeited $ 30.58 $ 23.31 $ 16.93
Weighted Average Grant-Date Price, Ending Balance $ 39.87 $ 23.65 $ 17.01
Fair value of shares vested 10,747,204 1,443,700 1,364,178
Performance share units [Member]
     
Number of Restricted Stock Awards Outstanding      
Number of Nonvested Awards Outstanding, Beginning Balance 729,010 488,210 404,410
Number of Nonvested Awards Outstanding, Granted 298,710 256,420 319,880
Number of Nonvested Awards Outstanding, Vested (197,450) 0 (202,205)
Number of Nonvested Awards Outstanding, Forfeited (31,670) (15,620) (33,875)
Number of Nonvested Awards Outstanding, Ending Balance 798,600 729,010 488,210
Weighted Average Grant-Date Fair Value      
Weighted Average Grant-Date Price, Beginning Balance $ 25.86 $ 19.09 $ 16.67
Weighted Average Grant-Date Price, Granted $ 57.88 $ 38.47 $ 20.60
Weighted Average Grant-Date Price, Vested $ 16.97 $ 0.00 $ 16.67
Weighted Average Grant-Date Price, Forfeited $ 34.98 $ 21.15 $ 18.93
Weighted Average Grant-Date Price, Ending Balance $ 39.67 $ 25.86 $ 19.09
Fair value of shares vested $ 9,762,648 $ 0 $ 4,527,370