Derivatives - Effect of Derivative Instruments on Condensed Consolidated Statements of Earnings (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 04, 2014	Sep. 28, 2013	Oct. 04, 2014	Sep. 28, 2013
Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 1,158	$ (655)	$ 1,548	$ 4,446
Cost of Products Sold [Member] | Commodity contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	844	(789)	1,282	4,193
Cost of Products Sold [Member] | Commodity contracts [Member] | Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss), net of tax, Recognized in OCI on Derivatives (Effective Portion)	103	0	(1,530)	0
Amount of Gain or (Loss), net of tax, Reclassified from Accumulated OCI into Earnings (Effective Portion)	(197)	0	(430)	0
Amount of Gain or (Loss), net of tax, Recognized in Earnings on Derivatives (Ineffective Portion)	0	0	0	0
Cost of Products Sold [Member] | Foreign exchange contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 314	$ 134	$ 266	$ 253