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Basis of Presentation (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 28, 2014
Annual Incentive Plan Expense [Member]
Jun. 28, 2014
Annual Incentive Plan Expense [Member]
Jun. 28, 2014
Earnings per Share, Diluted [Member]
Jun. 28, 2014
Earnings per Share, Diluted [Member]
Change in Accounting Estimate [Line Items]          
Change in estimate, amount   $ 0.8 $ 2.4    
Change in estimate, per share       $ 0.01 $ 0.04
Increase (decrease) in accounts payable and accrued expenses 5.7        
Payments to acquire property and equipment 4.4        
Increase (decrease) in capitalized software $ 1.3