Changes to AOCI, Net of Income Tax, By Component (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 15, 2017	Jul. 16, 2016	Jul. 15, 2017	Jul. 16, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Balances				$ 1,210,080
Reclassified to earnings from AOCI	[1]	$ 1,178	$ 4,320	2,795	$ 6,516
Balances		1,264,587		1,264,587
Gains/Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balances				(1,061)	(10,190)
Other comprehensive income before reclassifications				3,720	(937)
Reclassified to earnings from AOCI				794	1,946
Balances		3,453	(9,181)	3,453	(9,181)
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Balances				(82,222)	(86,610)
Other comprehensive income before reclassifications					(36,407)
Reclassified to earnings from AOCI	[1]	858	3,517	2,001	4,570
Balances		(80,221)	(118,447)	(80,221)	(118,447)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Balances				(83,283)	(96,800)
Other comprehensive income before reclassifications				3,720	(37,344)
Reclassified to earnings from AOCI				2,795	6,516
Balances		$ (76,768)	$ (127,628)	$ (76,768)	$ (127,628)

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