Goodwill and Other Intangible Assets (Details 3) - USD ($) $ in Thousands	Aug. 31, 2015	Aug. 31, 2014
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	$ 479,400	$ 415,546
Accumulated Amortization	(195,864)	(171,490)
Net Carrying Amount	283,536	244,056
Indefinite lived trade name [Member]
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	123,090	123,090
Net Carrying Amount	123,090	123,090
Contractual agreements and customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	201,423	165,651
Accumulated Amortization	(96,013)	(83,695)
Net Carrying Amount	105,410	81,956
Intellectual property [Member]
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	150,453	126,805
Accumulated Amortization	(99,295)	(87,795)
Net Carrying Amount	51,158	$ 39,010
Indefinite lived trade name [Member]
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	4,434
Accumulated Amortization	(556)
Net Carrying Amount	$ 3,878