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FAIR VALUE FAIR VALUE (Financial Assets and Liabilities Not Required to Be Measured at Fair Value) (Details) - USD ($) $ in Thousands | Aug. 31, 2019 | Aug. 31, 2018
--- | --- | ---
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | $ 1,254,921 | $ 1,170,129
2027 Notes |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 300,000 | 300,000
2027 Notes | Significant Other Observable Inputs (Level 2) | Fair Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities | [1] | 303,810 | 281,655
2026 Notes |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 350,000 | 350,000
2026 Notes | Significant Other Observable Inputs (Level 2) | Fair Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities | [1] | 363,444 | 339,238
2023 Notes |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 330,000 | 330,000
2023 Notes | Significant Other Observable Inputs (Level 2) | Fair Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities | [1] | 342,098 | 326,090
Short-term borrowings |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | 3,929 | 0
2022 Term Loan | Significant Other Observable Inputs (Level 2) | Fair Value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities | [2] | 210,125 | 142,500
Revolving credit agreement | 2022 Term Loan |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Financial liabilities |  | $ 210,125 | $ 142,500
[1] | (1) The fair value of the notes is determined based on indicated market values.
[2] | The short-term borrowings and Term Loan contain variable interest rates and their carrying value approximates fair value.

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