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BUSINESS SEGMENTS (Reconciliations of Earnings from Continuing Operations to Adjusted Operating Profit) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016
Segment Reporting [Abstract] |  |  |
Earnings from continuing operations | $ 135,237 | $ 50,175 | $ 62,001
Interest expense | (40,957) | (44,151) | (62,973)
Income taxes | (30,147) | (15,276) | (13,976)
Depreciation and amortization | 131,508 | 124,490 | 126,259
Impairment of assets | (14,372) | (1,730) | (40,028)
Adjusted EBITDA from continuing operations | $ 352,221 | $ 235,822 | $ 305,237

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