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Stockholders' Equity (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 0 Months Ended 12 Months Ended
Feb. 16, 2012
Aug. 18, 2011
Feb. 17, 2011
Dec. 31, 2013
Dec. 25, 2012
Dec. 27, 2011
Stockholders' Equity            
Repurchase of common stock authorized by board of directors $ 100.0   $ 50.0      
Increase in amount of stock repurchase   50.0        
Amount paid for repurchase of common stock       $ 12.8 $ 29.4 $ 59.1
Number of shares repurchased       461,600 1,786,855 3,972,100