Changes to Accumulated Other Comprehensive Loss, Net of Income Tax, By Component (Detail) - USD ($) $ in Thousands		4 Months Ended
		Apr. 22, 2017	Apr. 23, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Balances		$ 1,210,080
Reclassified to earnings from accumulated other comprehensive loss	[1]	1,617	$ 2,196
Balances		1,244,785
Gains/Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balances		(1,061)	(10,190)
Other comprehensive income before reclassifications		(3,518)	2,588
Reclassified to earnings from accumulated other comprehensive loss		474	1,143
Balances		(4,105)	(6,459)
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Balances		(82,222)	(86,610)
Reclassified to earnings from accumulated other comprehensive loss	[1]	1,143	1,053
Balances		(81,079)	(85,557)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Balances		(83,283)	(96,800)
Other comprehensive income before reclassifications		(3,518)	2,588
Reclassified to earnings from accumulated other comprehensive loss		1,617	2,196
Balances		$ (85,184)	$ (92,016)

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