Changes to Accumulated Other Comprehensive Loss, Net of Income Tax, By Component (Detail) - USD ($) $ in Thousands		4 Months Ended
		Apr. 23, 2016	Apr. 25, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss, beginning balance		$ (96,800)	$ (98,020)
Other comprehensive income before reclassifications		2,588	(4,428)
Reclassified to earnings from accumulated other comprehensive loss	[1]	2,196	2,330
Accumulated other comprehensive income loss, ending balance		(92,016)	(100,118)
Gains/Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss, beginning balance		(10,190)	(11,408)
Other comprehensive income before reclassifications		2,588	(4,428)
Reclassified to earnings from accumulated other comprehensive loss		1,143	1,587
Accumulated other comprehensive income loss, ending balance		(6,459)	(14,249)
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss, beginning balance		(86,610)	(86,612)
Reclassified to earnings from accumulated other comprehensive loss	[1]	1,053	743
Accumulated other comprehensive income loss, ending balance		$ (85,557)	$ (85,869)

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