CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Aug. 31, 2014	Aug. 31, 2013
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	243,930,983	237,732,562
Common stock, shares outstanding	194,113,850	203,164,870
Treasury stock, shares	49,817,133	34,567,692