Restructuring and Related Charges (Summary) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 36,902	$ 160,395	$ 11,369
EMS
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	16,300	51,300	10,700
DMS
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	16,600	82,400	800
Non-allocated charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	4,000	26,700	(100)
Employee severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	16,269	56,834	8,845
Lease costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	1,596	3,966	(43)
Asset write-off costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	16,264	94,346	1,170
Other related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 2,773	$ 5,249	$ 1,397