Commitments and Contingencies (Environmental Matters) (Details) (Environmental Litigation [Member])	12 Months Ended
	Dec. 27, 2013 counterparty mi company
Environmental Litigation [Member]
Loss Contingencies [Line Items]
Additional Companies Involved in Passaic River Complaint	5
Number of miles pertaining to Passaic River tidal reach required to be studied by EPA	17
Number Of Potentially Responsible Parties In Connection With Environmental Liabilities For Operations Conducted Near Passaic River	70