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REVENUE RECOGNITION - Contract Assets and Contract Liabilities (Details) - USD ($)
$ in Thousands
May 31, 2020
Aug. 31, 2019
Revenue from Contract with Customer [Abstract]    
Contract assets (included in other current assets) $ 55,687 $ 103,805
Contract liabilities (included in accrued expenses and other payables) $ 21,900 $ 37,165