FAIR VALUE (Financial Assets and Liabilities Not Required to Be Measured at Fair Value) (Details) - USD ($) $ in Thousands		Feb. 29, 2016	Aug. 31, 2015
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities		$ 1,082,677	$ 1,287,992
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
2023 Notes | Level 2 | Fair Value
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities	[1]	281,130	300,630
2018 Notes
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities		411,186	513,680
2018 Notes | Level 2 | Carrying Value
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities		411,186	513,680
2018 Notes | Level 2 | Fair Value
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities	[1]	417,810	530,000
2017 Notes
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities		304,087	405,573
2017 Notes | Level 2 | Carrying Value
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities			405,573
2017 Notes | Level 2 | Fair Value
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Financial liabilities	[1]	$ 307,500	$ 419,400

[1] The fair values of the 2023 Notes, 2018 Notes and 2017 Notes are estimated based on readily available market prices of these notes at February 29, 2016 and August 31, 2015 or similar notes with the same maturities, rating and interest rates.