Income Taxes (Components Of The Provision For Income Taxes) (USD $) In Thousands	12 Months Ended
	Aug. 31, 2011		Aug. 31, 2010		Aug. 31, 2009
Income Taxes [Abstract]
U.S. federal	$ 53,925		$ 63,712		$ 60,547
U.S. state and local	4,833		4,839		6,383
Non-U.S.	10,728		10,151		4,570
Total current taxes	69,486		78,702		71,500
U.S. federal	606		5,718		3,050
U.S. state and local	27		279		230
Non-U.S.	941		735		1,048
Total deferred taxes	1,574		6,732		4,328
Total provision for income taxes	$ 67,912	[1]	$ 71,970	[2]	$ 67,172	[3]

[1] Includes income tax benefits of $6 million from the reenactment of the U.S. Federal R&D credit in December 2010 and the finalization of the fiscal 2010 tax return.

[2] Includes income tax benefits of $1.3 million from the finalization of the fiscal 2009 tax return, adjustments to certain reserves to reflect the lapse of statute of limitations and higher levels of non-U.S. taxable income.

[3] Includes income tax benefits of $4.0 million from the reenactment of the U.S. Federal R&D credit in October 2008, finalizing prior year tax returns, adjusting certain reserves to reflect the lapse of statute of limitations and a benefit from repatriating foreign earnings to the U.S.