CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock	Noncontrolling Interests
Beginning Balance at Aug. 31, 2012	$ 2,107,335	$ 232	$ 1,752,847	$ 766,934	$ 106,275	$ (521,231)	$ 2,278
Beginning Balance (in shares) at Aug. 31, 2012	206,028,577	206,028,577
Shares issued upon exercise of stock options (in shares)		253,340
Shares issued upon exercise of stock options	3,366	5	3,361
Shares issued under employee stock purchase plan (in shares)		459,351
Shares issued under employee stock purchase plan	7,533		7,533
Vesting of restricted stock awards (in shares)		4,436,193
Purchases of treasury stock under employee stock plans (in shares)		(1,183,169)
Purchases of treasury stock under employee stock plans	(20,268)					(20,268)
Treasury shares purchased (in shares)		(7,342,904)
Treasury shares purchased	(129,262)					(129,262)
Recognition of stock-based compensation	52,385		52,385
Excess tax benefit of stock awards	209		209
Capital contribution of noncontrolling interest	316						316
Declared dividends	(50,237)			(50,237)
Comprehensive income	235,642			244,463	(7,659)		(1,162)
Ending Balance at May. 31, 2013	$ 2,207,019	$ 237	$ 1,816,335	$ 961,160	$ 98,616	$ (670,761)	$ 1,432
Ending Balance (in shares) at May. 31, 2013	202,651,388	202,651,388