Equity Compensation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
Equity Compensation
Award vesting period, in years	3 years
Stock-based employee compensation expense	$ 10,400,000	$ 10,100,000	$ 9,400,000
Total income tax benefit recognized for share-based compensation arrangements	3,800,000	$ 3,700,000	$ 3,500,000
Unrecognized compensation cost related to nonvested option awards and restricted stock	8,000,000
Unrecognized compensation cost related to nonvested option awards and restricted stock, current	5,900,000
Unrecognized compensation cost related to nonvested option awards and restricted stock to be recognized in two years	1,900,000
Unrecognized compensation cost related to nonvested option awards and restricted stock to be recognized in three years	$ 200,000
Exercise of stock options (in shares)	147,000	478,000	441,000
Total intrinsic value of the options exercised	$ 5,200,000	$ 18,600,000	$ 20,300,000
Cash received upon exercise of stock options	6,260,000	7,060,000	5,197,000
Tax benefits realized upon the exercise of stock options	$ 1,900,000	$ 6,900,000	$ 7,500,000
Omnibus Incentive 2011 Plan
Equity Compensation
Shares of common stock authorized for issuance	6,600,000
Shares of common stock available for future issuance	6,600,000
Options
Equity Compensation
Award vesting period, in years	3 years
Options | Maximum
Equity Compensation
Award expiration period, in years	10 years
Options | Omnibus Incentive 2011 Plan
Equity Compensation
Award vesting period, in years	3 years
Options | Omnibus Incentive 2011 Plan | Maximum
Equity Compensation
Award expiration period, in years	10 years