Annual report pursuant to Section 13 and 15(d)

Reconciliation of Income Taxes at Federal Statutory Rate to Effective Tax Rate (Detail)

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Reconciliation of Income Taxes at Federal Statutory Rate to Effective Tax Rate (Detail)
12 Months Ended
Aug. 31, 2013
Aug. 31, 2012
Aug. 31, 2011
Income Tax Disclosure [Abstract]      
Federal statutory rate 35.00% 35.00% 35.00%
State income taxes, net of Federal effect 0.90% 1.20% 0.40%
Net effect of foreign tax rates and credits (8.80%) (14.60%) (14.00%)
NOL utilization and changes in valuation allowance (3.10%) 0.10% (3.00%)
Tax contingency reserve (5.60%) (2.20%) (1.60%)
Prior period correction (6.50%) [1] 0.00% [1] 0.00% [1]
Other items (2.50%) (0.50%) 3.40%
Effective income tax rate 9.40% 19.00% 20.20%
[1] During the fourth quarter of fiscal 2013, the Company recorded a $10.6 million adjustment to properly state deferred income tax balances associated with its equity compensation programs. The correction is not material to current or previously issued financial statements.