GOODWILL AND INTANGIBLE ASSETS GOODWILL AND INTANGIBLE ASSETS - Goodwill Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
Goodwill [Line Items]
Goodwill	$ 5,002,352	$ 3,609,437	$ 2,929,833
Goodwill Acquired During Period And Adjustments	1,336,257	733,183
Goodwill, Translation Adjustments	56,658	(53,579)
Goodwill	5,002,352	3,609,437	2,929,833
Communications, Media & Technology
Goodwill [Line Items]
Goodwill	775,802	546,566	364,824
Goodwill Acquired During Period And Adjustments	220,406	194,365
Goodwill, Translation Adjustments	8,830	(12,623)
Goodwill	775,802	546,566	364,824
Financial Services
Goodwill [Line Items]
Goodwill	1,151,024	854,376	713,430
Goodwill Acquired During Period And Adjustments	280,569	149,811
Goodwill, Translation Adjustments	16,079	(8,865)
Goodwill	1,151,024	854,376	713,430
Health & Public Service
Goodwill [Line Items]
Goodwill	934,374	715,849	588,893
Goodwill Acquired During Period And Adjustments	214,316	130,787
Goodwill, Translation Adjustments	4,209	(3,831)
Goodwill	934,374	715,849	588,893
Products
Goodwill [Line Items]
Goodwill	1,698,140	1,112,991	1,001,768
Goodwill Acquired During Period And Adjustments	564,519	134,607
Goodwill, Translation Adjustments	20,630	(23,384)
Goodwill	1,698,140	1,112,991	1,001,768
Resources
Goodwill [Line Items]
Goodwill	443,012	379,655	260,918
Goodwill Acquired During Period And Adjustments	56,447	123,613
Goodwill, Translation Adjustments	6,910	(4,876)
Goodwill	$ 443,012	$ 379,655	$ 260,918