SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - New Accounting Pronouncement (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income Tax Expense (Benefit)	$ 981,100	$ 1,253,969	$ 1,136,741
Net Cash Provided by (Used in) Operating Activities	4,973,039	4,667,400	4,176,163
Net Cash Provided by (Used in) Financing Activities	(3,560,235)	(3,489,218)	(3,286,322)
New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income Tax Expense (Benefit)	$ 99,649
Net Cash Provided by (Used in) Operating Activities		92,285	84,026
Net Cash Provided by (Used in) Financing Activities		$ 92,285	$ 84,026