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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 |

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