Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)

v2.4.0.8
Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)
 12 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2014
Common Stock [Member]
Class A Common Stock [Member]
Feb. 28, 2013
Common Stock [Member]
Class A Common Stock [Member]
Feb. 28, 2014
Additional Paid-in Capital [Member]
Feb. 28, 2013
Additional Paid-in Capital [Member]
Feb. 29, 2012
Additional Paid-in Capital [Member]
Feb. 28, 2014
Treasury Stock [Member]
Feb. 28, 2013
Treasury Stock [Member]
Feb. 29, 2012
Treasury Stock [Member]
Feb. 28, 2014
Restricted stock units [Member]
Additional Paid-in Capital [Member]
Feb. 28, 2013
Restricted stock units [Member]
Additional Paid-in Capital [Member]
Feb. 29, 2012
Restricted stock units [Member]
Additional Paid-in Capital [Member]
Feb. 28, 2014
Restricted stock units [Member]
Treasury Stock [Member]
Feb. 28, 2013
Restricted stock units [Member]
Treasury Stock [Member]
Feb. 29, 2012
Restricted stock units [Member]
Treasury Stock [Member]
Feb. 28, 2014
Performance share units [Member]
Additional Paid-in Capital [Member]
Feb. 29, 2012
Performance share units [Member]
Additional Paid-in Capital [Member]
Feb. 28, 2014
Performance share units [Member]
Treasury Stock [Member]
Feb. 29, 2012
Performance share units [Member]
Treasury Stock [Member]
Repurchase of Class A Common shares   17,994,466 21,234,266             17,994,466 21,234,266                    
Conversion of Class B Convertible Common shares to Class A Common shares 80,470 66,881 33,842                                    
Exercise of Class A stock options 6,119,923 8,234,324 3,438,706 6,119,923 8,234,324 6,119,923 8,234,324 3,438,706                          
Employee stock purchases of treasury shares 163,817 210,895 279,361     163,817 210,895 279,361 163,817 210,895 279,361                    
Grant of Class A Common shares - restricted stock awards           12,375 18,190 622,092 12,375 18,190 622,092                    
Cancellation of restricted Class A Common shares           33,661 61,140 105,402 33,661 61,140 105,402                    
Vesting of stock units, net of shares withheld to satisfy tax withholding requirements                       121,539 42,664 38,783 121,539 42,664 38,783 309,653 123,822 309,653 123,822
Shares withheld to satisfy tax withholding requirements                       96,767 23,836 22,145 96,767 23,836 22,145 267,577 78,383 267,577 78,383