Contingencies (Details) (USD $)	3 Months Ended			0 Months Ended	3 Months Ended
	Mar. 30, 2013	Mar. 30, 2013 Insurance Environmental and Litigation Matters [Member]	Dec. 29, 2012 Insurance Environmental and Litigation Matters [Member]	Feb. 04, 2009 Tierra Maxus Litigation Third Party Complaint [Member] defendant	Mar. 30, 2013 Tierra Maxus Litigation Third Party Complaint [Member] entity
Loss Contingencies [Line Items]
Reserves for insurance, environmental and litigation contingencies		$ 36,400,000	$ 37,000,000
Insurance Settlements Receivable, Noncurrent		9,300,000	9,300,000
Loss Contingency, Number of Defendants				2
Number of entities involved in third party complaint					300
Litigation Settlement, Amount	$ 195,000