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FAIR VALUE (Financial Assets and Liabilities Not Required to Be Measured at Fair Value) (Details) - USD ($) $ in Thousands | May 31, 2019 | Aug. 31, 2018
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Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | $ 1,372,448 | $ 1,170,129
2027 Notes | Level 2 | Carrying Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 300,000 | 300,000
2027 Notes | Level 2 | Fair Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 279,195 | 281,655
2026 Notes | Level 2 | Carrying Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 350,000 | 350,000
2026 Notes | Level 2 | Fair Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 345,769 | 339,238
2023 Notes | Level 2 | Carrying Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 330,000 | 330,000
2023 Notes | Level 2 | Fair Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 328,964 | 326,090
Short-term borrowings | Level 2 | Carrying Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 25,327 | 0
Short-term borrowings | Level 2 | Fair Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 25,327 | 0
Revolving credit facility | Term Loans | Level 2 | Carrying Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | 310,125 | 142,500
Revolving credit facility | Term Loans | Level 2 | Fair Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Financial liabilities | $ 310,125 | $ 142,500

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