Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Continuing Operations	12.70%	(198.80%)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory rate	35.00%	35.00%
State taxes, net of credits	2.50%	7.10%
Foreign income taxed at different rates	(6.50%)	(1.00%)
Section 199 deduction	(1.00%)	4.60%
Non-deductible officers’ compensation	0.30%	(1.10%)
Noncontrolling interests	(0.90%)	48.50%
Research and development credits	(0.10%)	21.70%
Valuation allowance on deferred tax assets	(17.00%)	(312.10%)
Other	0.40%	(1.50%)
Effective tax rate	12.70%	(198.80%)
Valuation Allowance, Deferred Tax Asset, Change in Amount		$ 2