REVENUE RECOGNITION (Disaggregated Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Disaggregation of Revenue [Line Items]
Net Merchandise Sales	$ 768,368	$ 755,009	$ 2,418,822	$ 2,322,742
Foods And Sundries [Member]
Disaggregation of Revenue [Line Items]
Net Merchandise Sales	419,579	384,902	1,250,728	1,174,087
Fresh Foods [Member]
Disaggregation of Revenue [Line Items]
Net Merchandise Sales	228,858	209,452	685,413	630,657
Hardlines [Member]
Disaggregation of Revenue [Line Items]
Net Merchandise Sales	70,374	83,606	261,796	274,596
Softlines [Member]
Disaggregation of Revenue [Line Items]
Net Merchandise Sales	25,597	38,700	115,860	127,158
Other Business [Member]
Disaggregation of Revenue [Line Items]
Net Merchandise Sales	$ 23,960	$ 38,349	$ 105,025	$ 116,244