Equity Compensation (Details 1) (USD $)	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Equity Compensation
Award vesting period, in years	3 years
Stock-based employee compensation expense	$ 8,700,000	$ 7,400,000	$ 6,900,000
Total income tax benefit recognized for share-based compensation arrangements	3,200,000	2,700,000	2,400,000
Unrecognized compensation cost related to nonvested option awards and restricted stock	7,000,000
Unrecognized compensation cost related to nonvested option awards and restricted stock, current	4,300,000
Unrecognized compensation cost related to nonvested option awards and restricted stock to be recognized in two years	2,000,000
Unrecognized compensation cost related to nonvested option awards and restricted stock to be recognized in three years	720,000
Exercise of stock options (in shares)	759,000	697,000	864,000
Total intrinsic value of the options exercised	25,300,000	13,100,000	7,500,000
Cash received upon exercise of stock options	5,837,000	6,865,000	12,264,000
Tax benefits realized upon the exercise of stock options	$ 9,400,000	$ 4,800,000	$ 2,600,000
Omnibus Incentive 2011 Plan
Equity Compensation
Shares of common stock authorized for issuance	7,500,000
Shares of common stock available for future issuance	7,500,000
Number of shares authorized that were transferred from 2008 Omnibus Incentive Plan	4,000,000
Award vesting period, in years	3 years
Omnibus Incentive 2011 Plan | Minimum
Equity Compensation
Award expiration period, in years	5 years
Omnibus Incentive 2011 Plan | Maximum
Equity Compensation
Award expiration period, in years	10 years
Options
Equity Compensation
Award expiration period, in years	10 years
Award vesting period, in years	3 years