Contingencies (Details) $ in Millions		1 Months Ended	12 Months Ended
	Jun. 30, 2018 Party	Mar. 31, 2016 Party mi	Dec. 29, 2018 USD ($) contaminant	Dec. 30, 2017 USD ($)
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss, Area of Land | mi		8.3
Loss Contingency, Estimate of Possible Loss			$ 1,380.0
Loss Contingency, Number of Parties | Party	100	100
Number of Contaminants | contaminant			8
Insurance Environmental and Litigation Matters [Member]
Loss Contingencies [Line Items]
Reserves for insurance, environmental and litigation contingencies			$ 66.6	$ 61.4
Insurance Settlements Receivable, Noncurrent			26.1	$ 25.0
Settled Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Parties | Party	20
Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss			$ 165.0
Loss Contingency, Number of Parties | Party	40