Summary of Reclassifications Out of AOCI (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Derivative instruments net of tax		$ (1,367)	$ (3,399)	$ (5,413)
Reclassification From AOCI, Current Period Net Of Tax	[1]	(8,150)	(11,800)	(7,952)
Derivative Instruments
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Derivative instruments before tax	[1]	(2,222)	(5,528)	(8,801)
Reclassification from AOCI, Derivative instruments tax benefit	[1]	855	2,129	3,388
Reclassification from AOCI, Derivative instruments net of tax	[1]	(1,367)	(3,399)	(5,413)
Reclassification From AOCI, Current Period Net Of Tax		(1,367)	(3,399)
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]	(175)	(175)	267
Pension and postretirement plans, Settlement losses
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Current Period, before Tax	[1],[2]	(4,649)	(6,646)
Pension and postretirement plans, actuarial losses
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Current Period, before Tax	[1],[2]	(5,858)	(6,840)	(4,395)
Accumulated Defined Benefit Plans Adjustment
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Current Period, before Tax	[1]	(10,682)	(13,661)	(4,128)
Reclassification from AOCI, Current Period, Tax benefit	[1]	3,899	5,260	1,589
Reclassification From AOCI, Current Period Net Of Tax	[1]	(6,783)	(8,401)	(2,539)
Interest Rate Contracts | Derivative Instruments
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Derivative instruments before tax	[1]	(142)	(221)	(250)
Commodity Contract | Derivative Instruments
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Derivative instruments before tax	[1],[3]	(2,080)	(5,307)	(8,551)
Reclassification from AOCI, Derivative instruments tax benefit		801	2,043	3,292
Reclassification from AOCI, Derivative instruments net of tax		$ (1,279)	$ (3,264)	$ (5,259)

[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 21, 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 Consolidated Statements of Cash Flows.