Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 13, 2013	Jul. 14, 2012	Jul. 13, 2013	Jul. 14, 2012
Net income	$ 46,460	$ 28,380	$ 159,735	$ 66,323
Pension and postretirement plans:
Amortization of prior service (credit) cost included in net income	(36)	(36)	(85)	(85)
Amortization of actuarial loss included in net income	763	679	1,781	1,585
Pension and postretirement plans, net of tax	727	643	1,696	1,500
Derivative instruments:
Net change in fair value of derivatives	(6,918)	9,958	(15,539)	2,949
Loss (Gain) reclassified to net income	6,887	4,024	7,894	14,060
Derivative instruments, net of tax	(31)	13,982	(7,645)	17,009
Other comprehensive income (loss), net of tax	696	14,625	(5,949)	18,509
Comprehensive income	$ 47,156	$ 43,005	$ 153,786	$ 84,832