Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v2.4.0.6
Consolidated Balance Sheets (Parenthetical) (USD $)
Feb. 28, 2013
Feb. 29, 2012
Preferred Stock, par value $ 0.01 $ 0.01
Preferred Stock, shares authorized 1,000,000 1,000,000
Preferred Stock, shares issued 0 0
Class A Common Stock [Member]
    
Common Stock, par value $ 0.01 $ 0.01
Common Stock, shares authorized 322,000,000 322,000,000
Common Stock, shares issued 242,064,514 233,751,797
Treasury Stock, shares at cost 80,799,298 63,015,441
Class B Convertible Common Stock [Member]
    
Common Stock, par value $ 0.01 $ 0.01
Common Stock, shares authorized 30,000,000 30,000,000
Common Stock, shares issued 28,517,035 28,583,916
Treasury Stock, shares at cost 5,005,800 5,005,800
Class 1 Common Stock [Member]
    
Common Stock, par value $ 0.01 $ 0.01
Common Stock, shares authorized 25,000,000 25,000,000
Common Stock, shares issued 37 11,549