Summary of Changes in Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013	May 31, 2014 Foreign currency translation adjustment	May 31, 2014 Derivative instruments	May 31, 2014 Actuarial loss	May 31, 2014 Prior service cost	Aug. 31, 2013 Prior service cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ 81,248		$ 125,594	$ (5,050)	$ (40,258)	$ 962	$ 962
Other comprehensive income before reclassifications			11,605		14,544	(2,939)
Amounts reclassified from accumulated other comprehensive income			(5,112)		(10,835)	6,286	(563)
Total other comprehensive (loss) income	(6,830)	(20,008)	6,493	(7,659)	3,709	3,347	(563)
Ending balance	$ 87,741		$ 87,741		$ 129,303	$ (1,703)	$ (40,821)	$ 962	$ 962

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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