Annual report pursuant to Section 13 and 15(d)

Stock-Based Employee Compensation (Details 3)

v2.4.0.6
Stock-Based Employee Compensation (Details 3) (USD $)
Feb. 29, 2012
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Summary of information about stock options outstanding  
Number of Options outstanding 26,931,297
Options outstanding, Weighted Average Remaining Contractual Life 5.8
Options outstanding, Weighted Average Exercise Price $ 19.03
Number of Options exercisable 18,198,577
Options exercisable, Weighted Average Remaining Contractual Life 4.9
Options exercisable, Weighted Average Exercise Price $ 20.18
Options outstanding, Aggregate Intrinsic Value $ 97,479,088
Options exercisable, Aggregate Intrinsic Value $ 52,093,296
Range of Exercise Prices, $11.70 - $15.35 [Member]
 
Summary of information about stock options outstanding  
Range of Exercise Prices, lower range $ 11.70
Range of Exercise Prices, upper range $ 15.35
Number of Options outstanding 5,687,571
Options outstanding, Weighted Average Remaining Contractual Life 6.1
Options outstanding, Weighted Average Exercise Price $ 11.90
Range of Exercise Prices, $15.51 - $19.12 [Member]
 
Summary of information about stock options outstanding  
Range of Exercise Prices, lower range $ 15.51
Range of Exercise Prices, upper range $ 19.12
Number of Options outstanding 8,485,037
Options outstanding, Weighted Average Remaining Contractual Life 6.2
Options outstanding, Weighted Average Exercise Price $ 17.89
Range of Exercise Prices, $20.05 - $22.99 [Member]
 
Summary of information about stock options outstanding  
Range of Exercise Prices, lower range $ 20.05
Range of Exercise Prices, upper range $ 22.99
Number of Options outstanding 6,964,924
Options outstanding, Weighted Average Remaining Contractual Life 6.6
Options outstanding, Weighted Average Exercise Price $ 20.80
Range of Exercise Prices, $23.02 - $26.24 [Member]
 
Summary of information about stock options outstanding  
Range of Exercise Prices, lower range $ 23.02
Range of Exercise Prices, upper range $ 26.24
Number of Options outstanding 4,296,356
Options outstanding, Weighted Average Remaining Contractual Life 4.3
Options outstanding, Weighted Average Exercise Price $ 24.96
Range of Exercise Prices, $27.24 - $30.52 [Member]
 
Summary of information about stock options outstanding  
Range of Exercise Prices, lower range $ 27.24
Range of Exercise Prices, upper range $ 30.52
Number of Options outstanding 1,497,409
Options outstanding, Weighted Average Remaining Contractual Life 3.1
Options outstanding, Weighted Average Exercise Price $ 27.40