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Commitment and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Commitments and Contingencies Disclosure [Abstract]      
Operating leases rental expense $ 38.0us-gaap_OperatingLeasesRentExpenseNet $ 31.7us-gaap_OperatingLeasesRentExpenseNet $ 32.1us-gaap_OperatingLeasesRentExpenseNet
Approximate minimum rental commitments under non-cancelable operating leases [Abstract]      
2015 31.1us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent    
2016 20.1us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears    
2017 11.1us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears    
2018 7.3us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears    
2019 4.9us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears    
After 2019 $ 4.3us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter    
Automobiles [Member] | Minimum [Member]      
Operating Leased Assets [Line Items]      
Operating Lease Term 2 years    
Automobiles [Member] | Maximum [Member]      
Operating Leased Assets [Line Items]      
Operating Lease Term 3 years