Equity Compensation (Information Pertaining to Option Activity) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 25, 2011 Year	Dec. 26, 2010	Dec. 27, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding	1,931
Number of Options, Granted	403	445	997
Number of Options, Exercised	(572)	(356)	(612)
Number of Options, Cancelled	(334)
Number of Options, Outstanding	1,428	1,931
Weighted Average Exercise Price, Outstanding	$ 26.80
Weighted Average Exercise Price, Granted	$ 29.09
Weighted Average Exercise Price, Exercised	$ 24.56
Weighted Average Exercise Price, Cancelled	$ 31.74
Weighted Average Exercise Price, Outstanding	$ 27.19	$ 26.80
Weighted Average Remaining Contractual Term, Outstanding at December 25, 2011	2.63
Weighted Average Remaining Contractual Term, Vested or expected to vest at December 25, 2011	2.69
Weighted Average Remaining Contractual Term, Exercisable at December 25, 2011	1.77
Number of Options, Vested or expected to vest at December 25, 2011	1,396
Number of Options, Exercisable at December 25, 2011	791
Weighted Average Exercise Price, Vested or expected to vest at December 25, 2011	$ 27.04
Weighted Average Exercise Price, Exercisable at December 25, 2011	$ 26.40
Aggregate Intrinsic Value, Outstanding at December 26, 2011	$ 15,259
Aggregate Intrinsic Value, Vested or expected to vest at December 26, 2011	14,919
Aggregate Intrinsic Value, Exercisable at December 26, 2011	$ 9,077

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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