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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 26, 2017 | Aug. 27, 2016
Income Tax Disclosure [Abstract] |  |
Deferred taxes are not provided for temporary differences | $ 712,600 | $ 572,000
Undistributed earnings of foreign subsidiaries | 37,500 | 35,000
Deferred tax assets from net operating loss carryforwards | 30,800 | 25,200
Future taxable income | $ 198,200 | 122,000
Expiration date of NOLs start year | 2018 |
Expiration date of NOLs end year | 2037 |
Deferred tax assets for income tax credit carryforwards | $ 17,200 | 25,700
Expiration date of tax credit carryforwards start year | 2023 |
Expiration date of tax credit carryforwards end year | 2027 |
Operating loss carryforwards expiration period description | Fiscal 2018 through 2037 |
Tax credit carryforwards expiration period description | Fiscal 2023 through 2027 |
Valuation allowances on deferred tax assets | $ 13,501 | 13,338
Unrecognized tax benefits , if recognized would reduce effective tax rate, amount | 9,900 | 15,500
Accrued for payment of interest and penalties associated with unrecognized tax benefits | 1,200 | $ 2,800
Amount of unrecognized tax benefits that could be reduced over next twelve months | $ 2,300 |

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