Summary of Significant Accounting Policies (Foreign Currency Translation) (Details) (Venezuela, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Feb. 28, 2015
Intercompany Foreign Currency Balance [Line Items]
Net monetary assets	$ 2
Official Rate [Member]
Intercompany Foreign Currency Balance [Line Items]
Foreign Currency Exchange Rate, Remeasurement		6.3
Simadi Rate [Member]
Intercompany Foreign Currency Balance [Line Items]
Foreign Currency Exchange Rate, Remeasurement	190.0		172.0
SICAD 1 Rate [Member] | Other expense
Intercompany Foreign Currency Balance [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ (9.3)	$ (13.4)