CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	May. 31, 2015	Aug. 31, 2014
Treasury Stock, Shares	19,405,317	12,195,359
Common Class A
Common stock, par value	$ 0.2	$ 0.2
Common stock, shares authorized	168,000,000	168,000,000
Common stock, shares issued	78,900,471	78,480,780