Summary of Reclassifications Out of AOCI (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 15, 2017	Jul. 16, 2016	Jul. 15, 2017	Jul. 16, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges net of tax		$ (320)	$ (803)	$ (794)	$ (1,946)
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax	[1]	(1,178)	(4,320)	(2,795)	(6,516)
Gains/Losses on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges before tax	[1]	(520)	(1,305)	(1,291)	(3,165)
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges tax benefit	[1]	200	502	497	1,219
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges net of tax	[1]	(320)	(803)	(794)	(1,946)
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax				(794)	(1,946)
Amortization of defined benefit pension items, prior service (cost) credits
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1],[2]	(40)	(27)	(94)	(81)
Amortization of defined benefit pension items, settlement losses
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1],[2]		(4,641)		(4,641)
Amortization of defined benefit pension items, actuarial losses
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1],[2]	(1,355)	(1,050)	(3,159)	(2,708)
Accumulated Defined Benefit Plans Adjustment
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(1,395)	(5,718)	(3,253)	(7,430)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax benefit	[1]	537	2,201	1,252	2,860
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax	[1]	(858)	(3,517)	(2,001)	(4,570)
Interest Rate Contracts | Gains/Losses on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges before tax	[1]	(33)	(57)	(77)	(135)
Commodity Contract | Gains/Losses on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges before tax	[1],[3]	$ (487)	$ (1,248)	(1,214)	(3,030)
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges tax benefit				467	1,167
Reclassification from Accumulated Other Comprehensive Income, Gains and losses on cash flow hedges net of tax				$ (747)	$ (1,863)

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

[2] These items are included in the computation of net periodic pension cost. See Note 14, Post-retirement Plans, for additional information.

[3] Amounts are presented as an adjustment to reconcile net income to net cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows.