Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands		12 Months Ended
		Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax	[1]	$ (7,952)	$ (13,369)	$ (20,290)
Gains/Losses on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax		(5,413)	(3,366)
Pension And Postretirement Benefits
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1],[2]	267	469	257
Pension And Postretirement Benefits
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1],[2]		(15,387)
Accumulated Defined Benefit Plans Adjustment Net Unamortized Gain Loss
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1],[2]	(4,395)	(1,348)	(5,378)
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]	(4,128)	(16,266)	(5,121)
Tax benefit	[1]	1,589	6,263	1,972
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax	[1]	(2,539)	(10,003)	(3,149)
Interest Rate Contracts | Gains/Losses on Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest income (expense)	[1]	(250)	(255)	(816)
Commodity Contract | Gains/Losses on Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	[1],[3]	(8,551)	(5,218)	(27,055)
Cash Flow Hedging
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(8,801)	(5,473)	(27,871)
Tax benefit	[1]	3,388	2,107	10,730
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax	[1]	$ (5,413)	$ (3,366)	$ (17,141)

[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 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 Consolidated Statements of Cash Flows.