Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation (Details 2)

v2.4.0.6
Stock-Based Employee Compensation (Details 2) (USD $)
12 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2011
Restricted stock awards [Member]
     
Number of Restricted Stock Awards Outstanding      
Number of Nonvested Awards Outstanding, Beginning Balance 1,797,888 1,810,316 1,508,358
Number of Nonvested Awards Outstanding, Granted 18,190 622,092 739,388
Number of Nonvested Awards Outstanding, Vested (626,914) (529,118) (399,566)
Number of Nonvested Awards Outstanding, Forfeited (61,140) (105,402) (37,864)
Number of Nonvested Awards Outstanding, Ending Balance 1,128,024 1,797,888 1,810,316
Weighted Average Grant-Date Fair Value      
Weighted Average Grant-Date Price, Beginning Balance $ 16.72 $ 14.83 $ 13.63
Weighted Average Grant-Date Price, Granted $ 30.14 $ 20.63 $ 16.67
Weighted Average Grant-Date Price, Vested $ 16.26 $ 14.87 $ 13.79
Weighted Average Grant-Date Price, Forfeited $ 17.44 $ 16.56 $ 14.23
Weighted Average Grant-Date Price, Ending Balance $ 17.16 $ 16.72 $ 14.83
Fair value of shares vested $ 13,741,842 $ 11,826,372 $ 7,302,455
Restricted stock units (RSUs) [Member]
     
Number of Restricted Stock Awards Outstanding      
Number of Nonvested Awards Outstanding, Beginning Balance 203,082 219,498 382,846
Number of Nonvested Awards Outstanding, Granted 609,080 80,970 125,349
Number of Nonvested Awards Outstanding, Vested (66,500) (60,928) (77,408)
Number of Nonvested Awards Outstanding, Forfeited (24,159) (36,458) (211,289)
Number of Nonvested Awards Outstanding, Ending Balance 721,503 203,082 219,498
Weighted Average Grant-Date Fair Value      
Weighted Average Grant-Date Price, Beginning Balance $ 17.01 $ 15.23 $ 14.29
Weighted Average Grant-Date Price, Granted $ 25.08 $ 20.60 $ 16.35
Weighted Average Grant-Date Price, Vested $ 16.69 $ 15.43 $ 14.12
Weighted Average Grant-Date Price, Forfeited $ 23.31 $ 16.93 $ 14.60
Weighted Average Grant-Date Price, Ending Balance $ 23.65 $ 17.01 $ 15.23
Fair value of shares vested 1,443,700 1,364,178 1,414,244
Performance stock units [Member]
     
Number of Restricted Stock Awards Outstanding      
Number of Nonvested Awards Outstanding, Beginning Balance 488,210 404,410 0
Number of Nonvested Awards Outstanding, Granted 256,420 319,880 407,750
Number of Nonvested Awards Outstanding, Vested 0 (202,205) 0
Number of Nonvested Awards Outstanding, Forfeited (15,620) (33,875) (3,340)
Number of Nonvested Awards Outstanding, Ending Balance 729,010 488,210 404,410
Weighted Average Grant-Date Fair Value      
Weighted Average Grant-Date Price, Beginning Balance $ 19.09 $ 16.67 $ 0.00
Weighted Average Grant-Date Price, Granted $ 38.47 $ 20.60 $ 16.67
Weighted Average Grant-Date Price, Vested $ 0.00 $ 16.67 $ 0.00
Weighted Average Grant-Date Price, Forfeited $ 21.15 $ 18.93 $ 16.67
Weighted Average Grant-Date Price, Ending Balance $ 25.86 $ 19.09 $ 16.67
Fair value of shares vested $ 0 $ 4,527,370 $ 0