Income Taxes (Details 3) (USD $) In Thousands	12 Months Ended
Aug. 27, 2011	Aug. 28, 2010
Reconciliation of Unrecognized tax benefits
Beginning balance	$ 38,554	$ 44,192
Additions based on tax positions related to the current year	6,205	16,802
Additions for tax positions of prior years	11,787	2,125
Reductions for tax positions of prior years	(20,998)	(6,390)
Reductions due to settlements	(3,829)	(16,354)
Reductions due to statue of limitations	(1,813)	(1,821)
Ending balance	$ 29,906	$ 38,554

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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