Effect of Derivative Instruments Designated as Cash-Flow Hedges in Other Comprehensive Income (Loss) ("OCI") and Condensed Consolidated Income Statement (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 10, 2015	Oct. 04, 2014	Oct. 10, 2015	Oct. 04, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	[1]	$ 2,652	$ 9,128	$ 1,262	$ 10,028
Amount of (Gain) or Loss Reclassified from Accumulated OCI into Income (Effective Portion)(Net of tax)	[1]	(1,096)	1,145	(3,934)	(2,369)
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)	[1]	(35)	(35)	(117)	(117)
Commodity Contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	[1]	2,652	9,128	1,262	10,028
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)	[1],[2]	$ (1,061)	$ 1,180	$ (3,817)	$ (2,252)

[1] Amounts in parentheses indicate debits to determine net income.

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