Equity Compensation (Narrative) (Detail) (USD $)	12 Months Ended
	Dec. 25, 2011	Dec. 26, 2010	Dec. 27, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based employee compensation expense	$ 6,700,000	$ 6,100,000	$ 5,800,000
Total income tax benefit recognized for share-based compensation arrangements	2,200,000	2,200,000	2,100,000
Unrecognized compensation cost related to nonvested option awards and restricted stock	5,500,000
Unrecognized compensation cost related to nonvested option awards and restricted stock, current	3,800,000
Unrecognized compensation cost related to nonvested option awards and restricted stock to be recognized in two years	1,500,000
Unrecognized compensation cost related to nonvested option awards and restricted stock to be recognized in three years	200,000
Options exercised, shares	572,000	356,000	612,000
Total intrinsic value of the options exercised	4,600,000	2,600,000	4,300,000
Cash received upon the exercise of stock options	14,042,000	6,410,000	9,830,000
Tax benefits realized upon the exercise of stock options	$ 1,700,000	$ 943,000	$ 1,500,000
Weighted average grant-date fair values of options granted	$ 9.50	$ 9.13	$ 7.26
Options granted, shares	403,000	445,000	997,000
2011 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized for issuance	4,800,000
Shares of common stock available for future issuance	4,800,000
2008 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized for issuance	2,000,000
Stock Options Granted After 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, expiration period, in years	5 years
Options granted, minimum vesting period, in years	2
Options granted, maximum vesting period, in years	3
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Time based compensation percentage	100.00%	100.00%	100.00%
Restricted Stock [Member] | 3 Year Graded [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded, vesting schedule, in years	3 years	3 years	3 years