Restructuring and Related Charges (Summary) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 25,914	$ 36,902	$ 160,395
EMS
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	21,500	16,300	51,300
DMS
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	2,600	16,600	82,400
Non-allocated charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	1,800	4,000	26,700
Employee severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	16,029	16,269	56,834
Lease costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	(41)	1,596	3,966
Asset write-off costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	(3,566)	16,264	94,346
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 13,492	$ 2,773	$ 5,249