Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Nov. 29, 2014	Nov. 30, 2013
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 41,377us-gaap_NetIncomeLoss	$ 78,027us-gaap_NetIncomeLoss
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	112	255
Other Comprehensive Income, Other, Net of Tax	46	18
Other comprehensive income	158	273
Comprehensive income	$ 41,535us-gaap_ComprehensiveIncomeNetOfTax	$ 78,300us-gaap_ComprehensiveIncomeNetOfTax

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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The change in other comprehensive income during the reporting period, net of tax, for an item that is not separately disclosed.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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