Concentration of Risk and Segment Data (Revenues Disaggregated by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Disaggregation of Revenue [Line Items]
Net revenue	$ 7,505,698	$ 6,506,275
Point in time
Disaggregation of Revenue [Line Items]
Net revenue	3,260,389	2,522,312
Over time
Disaggregation of Revenue [Line Items]
Net revenue	4,245,309	3,983,963
EMS
Disaggregation of Revenue [Line Items]
Net revenue	4,417,552	3,503,103
EMS | Point in time
Disaggregation of Revenue [Line Items]
Net revenue	1,390,910	420,661
EMS | Over time
Disaggregation of Revenue [Line Items]
Net revenue	3,026,642	3,082,442
DMS
Disaggregation of Revenue [Line Items]
Net revenue	3,088,146	3,003,172
DMS | Point in time
Disaggregation of Revenue [Line Items]
Net revenue	1,869,479	2,101,651
DMS | Over time
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,218,667	$ 901,521