Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013
Valuation and Qualifying Accounts Disclosure [Line Items]
Reserves for environmental remediation obligations	9.7
Portion of reserves included in current accrued liabilities	290.3	267.1
Maximum
Valuation and Qualifying Accounts Disclosure [Line Items]
Estimated duration of environmental remediation of all sites	30 years
Environmental reserves
Valuation and Qualifying Accounts Disclosure [Line Items]
Portion of reserves included in current accrued liabilities	6.0