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, 2015
Aug. 31, 2014
Aug. 31, 2013
Income Tax Disclosure [Abstract]      
Federal statutory rate 35.00% 35.00% 35.00%
State income taxes, net of federal effect (0.20%) 0.80% 0.90%
Net effects of foreign tax rate differential and credits (58.40%) (10.50%) (8.80%)
Domestic manufacturing deduction (5.10%) (1.00%) (1.00%)
Goodwill impairment 78.60% 0.00% 0.00%
Valuation allowance additions and releases 15.50% (8.00%) (3.10%)
Changes in liability for unrecognized tax benefits (42.10%) 3.20% (5.60%)
Change in income tax accounting method, net 0.00% (5.60%) 0.00%
Business (RV) divestiture 0.00% 3.00% 0.00%
Prior period correction 0.00% 0.00% (6.50%)
Other items (1.60%) 1.80% (1.50%)
Effective income tax rate 21.70% 18.70% 9.40%