Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Other comprehensive earnings (loss) [Abstract]
Tax benefit (expense) on cash flow hedging activities	$ (511)	$ (384)	$ 1,395
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	(25,193)	18,714	8,757
Reclassifications to earnings, tax effect: Tax (benefit) expense on cash flow hedging activities	946	1,378	402
Reclassifications to earnings, tax effect: Tax (benefit) expense on unrecognized pension and postretirement amounts	(4,275)	(2,498)	(1,973)
Deferred tax portion of the total benefit, not reflected in the consolidated statements of operations	29,033	(17,210)	(8,581)
Gain Loss On Cash Flow Hedge Ineffectiveness Net Of Tax	(168)	(90)	(100)
Foreign Currency Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net Of Tax	(6,500)
Accumulated Other Comprehensive Earnings (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	(72,307)	(35,943)	8,149
Current period other comprehensive earnings (loss)	32,902	(33,714)	(50,770)
Reclassifications from AOCE to earnings	5,270	(2,650)	6,678
Total accumulated other comprehensive earnings (loss), End of Period	(34,135)	(72,307)	(35,943)
Pension and Postretirement Amounts [Member]
Accumulated Other Comprehensive Earnings (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	(120,422)	(86,822)	(69,925)
Current period other comprehensive earnings (loss)	47,081	(38,335)	(20,237)
Reclassifications from AOCE to earnings	8,500	4,735	3,340
Total accumulated other comprehensive earnings (loss), End of Period	(64,841)	(120,422)	(86,822)
Gains (Losses) On Derivative Instruments [Member]
Accumulated Other Comprehensive Earnings (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	(1,008)	10,081	15,432
Current period other comprehensive earnings (loss)	(3,075)	(3,704)	(8,689)
Reclassifications from AOCE to earnings	(3,230)	(7,385)	3,338
Total accumulated other comprehensive earnings (loss), End of Period	(7,313)	(1,008)	10,081
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Earnings (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	49,123	40,798	62,642
Current period other comprehensive earnings (loss)	(11,104)	8,325	(21,844)
Reclassifications from AOCE to earnings	0	0	0
Total accumulated other comprehensive earnings (loss), End of Period	$ 38,019	$ 49,123	$ 40,798