Summary of Activity Related to Uncertain Tax Positions (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Income Tax Examination [Line Items]
Beginning Balance	$ 6,527	$ 110,540	$ 141,125
Additions based on tax positions related to the current year			3,436
Additions for tax positions of prior years	2,907	471,081	24,936
Reductions for tax positions of prior years	(829)	(40,083)	(32,572)
Statute expirations		(60,131)	(17)
Settlements	(4,053)	(474,880)	(26,368)
Ending Balance	$ 4,552	$ 6,527	$ 110,540

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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 decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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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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