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BASIS OF PRESENTATION - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	May 31, 2013	Aug. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allowance for doubtful accounts receivable and unbilled services	$ 85,894	$ 64,874
Accumulated depreciation	$ 1,699,087	$ 1,548,256

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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