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Summary of Significant Accounting Policies (Derviative) (Details)
$ in Millions
12 Months Ended
Dec. 27, 2016
USD ($)
Dec. 29, 2015
USD ($)
Dec. 30, 2014
USD ($)
Oct. 31, 2015
derivative
Derivative Instruments and Hedging Activities        
Number of free standing interest rate swap agreements | derivative       2
Amount of hedge ineffectiveness | $ $ 0.0 $ 0.0 $ 0.0