Effect of Derivative Instruments Located on the Condensed Consolidated Statements of Income, Utilized for Risk Management Purposes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 13, 2013		Jul. 14, 2012		Jul. 13, 2013		Jul. 14, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)(Net of tax)	$ (6,918)		$ 9,958		$ (15,539)		$ 2,949
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)(Net of tax)	(6,887)		(4,024)		(7,894)		(14,060)
Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)(Net of tax)	29		(35)		(267)		(1,583)
Interest Rate Contracts | Interest (Expense) Income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)(Net of tax)	(155)		(411)		(489)		(1,001)
Commodity Contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)(Net of tax)	(6,947)		9,993		(15,272)		4,532
Commodity Contract | Production Costs
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)(Net of tax)	$ (6,732)	[1]	$ (3,613)	[1]	$ (7,405)	[1]	$ (13,059)	[1]

[1] Included in materials, supplies, labor and other production costs (exclusive of depreciation and amortization shown separately).