Hedging Transactions and Derivative Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Derivative [Line Items]
Fair value of derivative instruments	$ 0		$ 0.3
Derivative instruments, charge to cost of sales	424.8	449.0
Gains and Losses on Derivative Instruments [Member]
Derivative [Line Items]
Derivative instruments, charge to cost of sales	0.1	0.1
Commodity Swaps [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of commodity cash flow hedges	15.0		0
Forward Contracts [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of commodity cash flow hedges	$ 6.3		$ 3.6
Maximum [Member]
Derivative [Line Items]
Maximum length to hedge our exposure to future cash flows	18 months