Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Aug. 31, 2014	Feb. 28, 2014
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	249,196,712	248,264,944
Treasury Stock, shares at cost	79,738,820	80,225,575
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	28,395,261	28,436,565
Treasury Stock, shares at cost	5,005,800	5,005,800