Concentration of Risk and Segment Data (Segment Revenue) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	$ 17,899,196	$ 15,762,146	$ 17,249,493
EMS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	10,777,810	10,638,588	12,023,685
DMS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	$ 7,121,386	$ 5,123,558	$ 5,225,808