Annual report pursuant to Section 13 and 15(d)

Earnings before Income Taxes, Including both Continuing and Discontinued Operations (Detail)

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Earnings before Income Taxes, Including both Continuing and Discontinued Operations (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2012
Income Tax Disclosure [Abstract]      
Domestic $ 84,854 $ 67,392 $ 65,685
Foreign 89,172 95,557 88,945
Earnings from continuing operations before income tax $ 174,026 $ 162,949 $ 154,630