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FAIR VALUE (Financial Assets and Liabilities Not Required to Be Measured at Fair Value) (Details) - USD ($) $ in Thousands | Nov. 30, 2016 | Aug. 31, 2016
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Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | $ 1,072,013 | $ 1,075,641
2023 Notes |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 330,000 | 330,000
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 | [1] | 334,643 | 332,010
2018 Notes |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 407,718 | 408,874
2018 Notes | Level 2 | Carrying Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 407,718 | 408,874
2018 Notes | Level 2 | Fair Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities | [1] | 428,805 | 432,303
2017 Notes |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 301,858 | 302,601
2017 Notes | Level 2 | Carrying Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 301,858 | 302,601
2017 Notes | Level 2 | Fair Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities | [1] | $ 303,093 | $ 311,250
[1] | The fair value of the notes is determined based on indicated market values.

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