Litigation, Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Lease disclosures
Total lease expense	$ 33.2	$ 28.7	$ 25.7
Office, retail, and commissary space
Lease disclosures
Operating leases, average term in years	5 years
Number of renewals	1
Distribution Subsidiary | Tractors and trailers
Lease disclosures
Operating leases, average term in years	7 years
United Kingdom Subsidiary | Office, retail, and commissary space
Lease disclosures
Payments received from sublease	$ 4.9	$ 3.8	$ 3.7