Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Apr. 20, 2013	Dec. 29, 2012
Accounts and notes receivable, allowances	2,411	386
Property, Plant and Equipment, accumulated depreciation	838,703	811,161
Common stock, par value	0.001	0.010
Common stock, authorized shares	500,000,000	500,000,000
Common stock, shares issued	152,488,008	152,488,008
Treasury stock, shares	14,255,150	14,214,819
Series A Preferred Stock
Preferred stock, par value	100.00	100.00
Preferred stock, shares authorized	200,000	200,000
Preferred stock, shares issued	0	0
Additional Series Of Preferred Stock
Preferred stock, par value	0.01	0.01
Preferred stock, shares authorized	800,000	800,000
Preferred stock, shares issued	0	0
4.375% Senior Notes
Senior note intrest rate	4.375%	4.375%