Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Income Tax Disclosure Additional Details [Table] [Line Items]
Percent of Revenue (excluding impairment charge) from foreign jurisdictions	68.00%
Impairment charge	$ 84,353	$ 0	$ 0
Asset Impairment Charge Income Tax Benefit	6,300
Valuation Allowances and Reserves, Recoveries	2,300
Unrecognized Tax Benefits, Period Increase (Decrease)	9,500
Recognized interest and penalties related to unrecognized tax benefits	1,800	2,000	2,900
Valuation Allowance, Prior Period Reserve Reclassified		7,200
Undistributed earnings	384,500
Additional provision for undistributed earnings	$ 70,900
Incremental U.S taxes on unremitted earnings	18.00%
Gain on product line divestiture	$ 0	(13,495)	0
Income taxes, net of refunds	26,400	$ 57,200	42,100
Properly State Deferred Income Tax Balances Associated With Its Equity Compensation Programs
Income Tax Disclosure Additional Details [Table] [Line Items]
Prior period reclassification adjustment			$ 10,600
Foreign Tax Authority
Income Tax Disclosure Additional Details [Table] [Line Items]
Operating Loss Carryforwards, Valuation Allowance	5,700
Operating Loss Carryforward	66,100
State and Local Jurisdiction
Income Tax Disclosure Additional Details [Table] [Line Items]
Operating Loss Carryforward	50,500
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	1,600
Domestic Destination
Income Tax Disclosure Additional Details [Table] [Line Items]
Impairment charge	20,300
Foreign Destination
Income Tax Disclosure Additional Details [Table] [Line Items]
Impairment charge	$ 64,100