Income Taxes (Reconciliation of Income Tax Expense) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Income Taxes [Abstract]
Tax at U.S. federal statutory income tax rate (35%)	$ 151,076	$ 25,243	$ 114,490
State income taxes, net of federal tax benefit	(4,474)	(3,740)	(6,285)
Impact of foreign tax rates	(157,827)	(19,621)	(130,732)
Permanent impact of non-deductible cost	8,951	10,995	12,815
Income tax credits	(12,773)	(5,632)	(7,170)
Changes in tax rates on deferred tax assets and liabilities	(1,206)	(23,432)	7,416
Valuation allowance	72,604	47,697	(45,502)
Non-deductible equity compensation	11,600	31,236	21,477
Impact of intercompany charges and dividends	49,843	9,376	30,360
Other, net	19,667	1,589	10,762
Total income tax expense	$ 137,461	$ 73,711	$ 7,631