Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 29, 2016	Feb. 28, 2015
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount				$ 42
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%	35.00%
State taxes, net of credits	1.60%	1.10%	1.50%	1.10%
Foreign income taxed at different rates	(4.50%)	(7.40%)	(5.10%)	(7.60%)
Non-deductible officers’ compensation	(1.10%)	(0.10%)	(0.70%)	(0.10%)
Noncontrolling interests	2.60%	0.50%	1.80%	0.50%
Research and development credits	0.80%	0.10%	0.60%	0.10%
Valuation allowance on deferred tax assets	(35.20%)	(20.50%)	(32.90%)	(20.40%)
Non-deductible goodwill	(0.40%)	(2.80%)	(0.40%)	(2.80%)
Unrecognized tax benefits	(0.90%)	(0.50%)	(0.70%)	(0.50%)
Other	(1.20%)	(0.60%)	(0.70%)	(0.60%)
Effective tax rate	(3.30%)	4.80%	(1.60%)	4.70%