Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)

v2.4.0.6
Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)
 12 Months Ended
Feb. 29, 2012
Feb. 28, 2011
Feb. 28, 2010
Feb. 29, 2012
Restricted Stock Units [Member]
Feb. 28, 2011
Restricted Stock Units [Member]
Feb. 28, 2010
Restricted Stock Units [Member]
Feb. 29, 2012
Performance Stock Units [Member]
Feb. 28, 2010
Common Stock
Class A Common Stock
Feb. 28, 2011
Common Stock
Class A Common Stock
Restricted Stock Units [Member]
Feb. 28, 2010
Common Stock
Class A Common Stock
Restricted Stock Units [Member]
Feb. 29, 2012
Additional Paid-in Capital
Feb. 28, 2011
Additional Paid-in Capital
Feb. 28, 2010
Additional Paid-in Capital
Feb. 29, 2012
Additional Paid-in Capital
Restricted Stock Units [Member]
Feb. 28, 2011
Additional Paid-in Capital
Restricted Stock Units [Member]
Feb. 28, 2010
Additional Paid-in Capital
Restricted Stock Units [Member]
Feb. 29, 2012
Additional Paid-in Capital
Performance Stock Units [Member]
Feb. 29, 2012
Treasury Stock
Feb. 28, 2011
Treasury Stock
Feb. 28, 2010
Treasury Stock
Feb. 29, 2012
Treasury Stock
Restricted Stock Units [Member]
Feb. 28, 2011
Treasury Stock
Restricted Stock Units [Member]
Feb. 28, 2010
Treasury Stock
Restricted Stock Units [Member]
Feb. 29, 2012
Treasury Stock
Performance Stock Units [Member]
Repurchase of Class A Common shares 21,234,266 17,240,101                               21,234,266 17,240,101          
Conversion of Class B Convertible Common shares to Class A Common shares 33,842 116,879 14,657                                          
Exercise of Class A stock options 3,438,706 5,100,677 1,453,431         1,453,431     3,438,706 5,100,677 1,453,431                      
Employee stock purchases of treasury shares 279,361 305,207 388,294               279,361 305,207 388,294         279,361 305,207 388,294        
Grant of Class A Common shares - restricted stock awards       80,970 125,349 368,966 319,880       622,092 739,388 1,365,460         622,092 739,388 1,365,460        
Vesting of stock units, net of shares withheld to satisfy tax withholding requirements       38,783 53,780 27,145 123,822   10,695 9,500       38,783 53,780 27,145 123,822       38,783 43,085 17,645 123,822
Shares withheld to satisfy tax withholding requirements       22,145 23,628 11,110 78,383             22,145 23,628 11,110 78,383       22,145 23,628 11,110 78,383
Cancellation of restricted Class A Common shares       36,458 211,289 100,165 33,875       105,402 37,864 136,497         105,402 37,864 136,497