Summary of Reclassifications Out of AOCI (Detail) - USD ($)		4 Months Ended
		Apr. 19, 2025	Apr. 20, 2024
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Gains and losses on derivative instruments net of tax		$ 489,000	$ (550,000)
Reclassification From AOCI, Current Period Net Of Tax	[1]	580,000	(477,000)
Derivative Instruments
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Gains and losses on cash flow hedges before tax	[1]	652,000	(733,000)
Reclassification from AOCI, Derivative instruments tax benefit	[1]	(163,000)	183,000
Reclassification from AOCI, Gains and losses on derivative instruments net of tax	[1]	489,000	(550,000)
Reclassification From AOCI, Current Period Net Of Tax		489,000	(550,000)
Pension and postretirement plans, prior service credits
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Current Period, before Tax	[1],[2]	64,000	54,000
Pension and postretirement plans, actuarial gain (losses)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Current Period, before Tax	[1],[2]	58,000	42,000
Accumulated Defined Benefit Plans Adjustment
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Current Period, before Tax	[1]	122,000	96,000
Reclassification from AOCI, Current Period, Tax expense	[1]	(31,000)	(23,000)
Reclassification From AOCI, Current Period Net Of Tax	[1]	91,000	73,000
Interest Rate Contracts | Derivative Instruments
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Gains and losses on cash flow hedges before tax	[1]	226,000	153,000
Commodity Contract | Derivative Instruments
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Gains and losses on cash flow hedges before tax	[1],[3]	426,000	(886,000)
Reclassification from AOCI, Derivative instruments tax benefit		(106,000)	221,000
Reclassification from AOCI, Gains and losses on derivative instruments net of tax		$ 320,000	$ (665,000)

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

[2] These items are included in the computation of net periodic pension cost and are reported in the other components of net periodic pension and postretirement benefits credit line item on the Condensed Consolidated Statements of Income. See Note 19, Postretirement 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.