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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
Interest Expense [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, gain (loss) on derivative, Net |  | $ 5,193 | $ 5,069 | $ 5,032
Interest Rate Contract [Member] | Interest Expense [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, gain (loss) on derivative, Net | [1] | 3,605 | 3,087 | 2,205
Cross Currency Interest Rate Swaps [Member] | Interest Expense [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, gain (loss) on derivative, Net | [2] | 1,588 | 1,982 | 2,827
Forward Foreign Exchange Contracts [Member] | Other Income (Expense) [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Other income (expense), net |  | $ (387) | $ (166) | $ 6,533
[1] | This amount is representative of the interest expense recognized on the underlying hedged transactions.
[2] | This amount is representative of the interest expense recognized on the interest rate swaps designated as cash flow hedging instruments.

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