SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($)	Aug. 31, 2020	Sep. 01, 2019	Aug. 31, 2019
Operating assets	$ 114,905,000
Total operating lease liabilities	123,414,000
Retained earnings	$ 1,807,826,000		$ 1,585,379,000
Receivables secured by credit insurance or letters of credit
Percentage of accounts receivable secured by credit insurance or letters of credit	13.00%		13.00%
Cumulative Effect, Period of Adoption, Adjustment
Retained earnings		$ 0
Accounting Standards Update 2016-02 | Other Noncurrent Assets
Operating assets		113,400,000
Accounting Standards Update 2016-02 | Accrued Expenses and Other Payables
Total operating lease liabilities		30,900,000
Accounting Standards Update 2016-02 | Other Long-term Liabilities
Total operating lease liabilities		$ 84,900,000