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Summary of Activity Related to Unrecognized Tax Benefits, Excluding Federal Tax Benefit of State Tax Deductions (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 25, 2011	Dec. 26, 2010
Reconciliation of Unrecognized Tax Benefits [Line Items]
Balance at beginning of year	$ 153,531	$ 191,715
Additions based on tax positions related to the current year	10,958	20,234
Additions for tax positions of prior years	17,009	24,015
Reductions for tax positions of prior years	(44,155)	(37,869)
Settlements	(15,618)	(3,307)
Reductions due to lapse of statutes of limitations	(11,443)	(41,257)
Balance at end of year	$ 110,282	$ 153,531

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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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