Facility Closure Reserves (Reserve Balances Were Classified In The Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009	Dec. 27, 2008
Restructuring Cost and Reserve [Line Items]
Other long-term liabilities	$ 182,685	$ 213,496
Total	49,075	61,673	61,572	48,933
Facility Closure [Member]
Restructuring Cost and Reserve [Line Items]
Accrued expenses and other current liabilities - Other	10,635	16,651
Other long-term liabilities	38,440	45,022
Total	$ 49,075	$ 61,673