DERIVATIVE FINANCIAL INSTRUMENTS - Notional and Fair Values of All Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	May 31, 2013	Aug. 31, 2012
Assets
Fair value of derivative assets	$ 22,429	$ 61,486
Liabilities
Fair value of derivative liabilities	142,287	94,076
Total fair value	(119,858)	(32,590)
Total notional value	5,205,934	4,853,191
Cash Flow Hedging | Other Current Assets
Assets
Fair value of derivative assets	7,888	15,392
Cash Flow Hedging | Other Non-Current Assets
Assets
Fair value of derivative assets	4,408	36,106
Cash Flow Hedging | Other Accrued Liabilities
Liabilities
Fair value of derivative liabilities	58,941	59,458
Cash Flow Hedging | Other Non-Current Liabilities
Liabilities
Fair value of derivative liabilities	40,606	23,471
Other Derivatives | Other Current Assets
Assets
Fair value of derivative assets	10,133	9,988
Other Derivatives | Other Accrued Liabilities
Liabilities
Fair value of derivative liabilities	$ 42,740	$ 11,147